WO2025241007A1

WO2025241007A1 - Kitchen appliance including a rotatable user interface device and method

Info

Publication number: WO2025241007A1
Application number: PCT/AU2025/050538
Authority: WO
Inventors: Ezra Jared VANDERJAGT; Eddie Siu; Duncan Bruce HELLMERS; Daniel Adrian VAN GEMERT
Original assignee: Breville Pty Ltd; Breville R&D Pty Ltd
Current assignee: Breville Pty Ltd; Breville R&D Pty Ltd
Priority date: 2024-05-24
Filing date: 2025-05-23
Publication date: 2025-11-27
Anticipated expiration: 2026-11-24

Abstract

A method of controlling a kitchen appliance (900), the kitchen appliance (900) including a rotatable user interface device (110) electrically controllable by one or more controllers (300), wherein the method comprises: controlling, by the one or more controllers (300), angular displacement of the rotatable user interface device (110) based on operating parameter data to be used by the kitchen appliance (900) during preparation of a consumable; detecting, by the one or more controllers (300) during the preparation of the consumable, a deviation in the angular position of the rotatable user interface device (110) caused by user interaction; and controlling, by the one or more controllers (300) during the preparation of the consumable, actuation of the rotatable user interface device (110) to generate haptic user feedback based on the deviation in the angular position.

Description

KITCHEN APPLIANCE INCLUDING A ROTATABLE USER INTERFACE DEVICE AND METHOD Related Applications [0001] The present application claims convention priority from Australian Provisional Patent Application No.2024901544, the contents of which are incorporated herein in their entirety by reference thereto. Technical Field [0002] The present invention relates to a kitchen appliance and a method of controlling the same. Background [0003] As kitchen appliances become more advanced, their complexity also rises. However, complexity comes at the cost of simplicity. This tension poses a challenge for designers of user interfaces for kitchen appliances. There has been a need to be able to communicate information to the user regarding the internal operation of a kitchen appliance so as to allow the user to have more control regarding the operation thereof. However, the area which is available on a kitchen appliance to communicate such feedback is small, which results in undesirable smaller icons and graphics being incorporated into the user interface for the kitchen appliance. Furthermore, the limited real estate often results in a cluttered user interface for the kitchen appliance. Summary [0004] There is therefore a need to substantially ameliorate one or more of the above-mentioned problems or provide a useful alternative. [0005] In a first aspect, there is provided a method of controlling a kitchen appliance, the kitchen appliance including a rotatable user interface device electrically controllable by one or more controllers, wherein the method comprises: controlling, by the one or more controllers, angular displacement of the rotatable user interface device based on operating parameter data to be used by the kitchen appliance during preparation of a consumable; detecting, by the one or more controllers during the preparation of the consumable, a deviation in the angular position of the rotatable user interface device caused by user interaction; and controlling, by the one or more controllers during the preparation of the consumable, actuation of the rotatable user interface device to generate haptic user feedback based on the deviation in the angular position. [0006] In one or more embodiments, the method includes controlling operation of the kitchen appliance based on the deviation in the angular position of the rotatable user interface device. [0007] In one or more embodiments, the operating parameter data is time series data, wherein each point in time of the time series data has associated therewith data indicative of a respective magnitude of an operating parameter of the kitchen appliance. [0008] In one or more embodiments, the method includes controlling the actuation of the rotatable user interface device to rotate in a first rotational direction in response to a positive change of magnitude of the operating parameter over time, and in a second direction in response to a negative change of magnitude of the operating parameter over time. [0009] In one or more embodiments, after user intervention, the method includes controlling the rotatable user interface device to correct the angular position in accordance with the operating parameter data. [0010] In one or more embodiments, in response to detecting the deviation in the angular position, the method further includes the one or more controllers modifying at least some of the operating parameter data to at least partially compensate for the deviation. [0011] In one or more embodiments, the preparation of the consumable by the kitchen appliance is defined by the operating parameter data to be conducted in a first period of time, and wherein the operating parameter data as modified in response to detecting the user intervention results in the consumable being prepared by the kitchen appliance in a second period of time, wherein the second period of time differs to the first period of time. [0012] In one or more embodiments, detecting the deviation in the angular position is based on an encoder signal received by the one or more controllers. [0013] In one or more embodiments, the encoder is a magnetic encoder configured to sense a magnetic field generated by a magnet associated with the rotatable user interface device. [0014] In one or more embodiments, detecting the deviation in the angular position is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions. [0015] In one or more embodiments, the method includes determining a magnitude of the haptic user feedback to be generated based at least on a magnitude of the deviation of the angular position. [0016] In one or more embodiments, determining the magnitude of the haptic user feedback further includes: obtaining, by the one or more controllers from one or more sensors, real-time data indicative of the kitchen appliance operating to produce the consumable; and determining, by the one or more controllers and based on the operating parameter data and the real-time data, an error, wherein determining, by the one or more controllers, the magnitude of the haptic user feedback is further based on the error. [0017] In one or more embodiments, the rotatable user interface device is a drive device. [0018] In one or more embodiments, the drive device is a brushless DC electric motor. [0019] In one or more embodiments, the haptic feedback is a counter-torque generated by the drive device to counter-torque applied to the rotatable user interface device via the user intervention. [0020] In one or more embodiments, controlling the drive device to generate the counter-torque is further based on cogging torque data, wherein the cogging torque data is indicative of a magnitude of cogging torque of the drive device at a plurality of angular positions, wherein the one or more controllers control the drive device to output the counter torque to additionally counteract the cogging torque based on the angular position of the rotational user interface device. [0021] In one or more embodiments, the operating parameter is an operating flow rate over time to produce the beverage. [0022] In one or more embodiments, the operating parameter is an operating temperature over time to produce the beverage. [0023] In one or more embodiments, the beverage is espresso, wherein the operating parameter is one of an operating pressure exerted upon coffee grounds over time or a flow rate of water flowing through the coffee grounds over time to produce the espresso. [0024] In one or more embodiments, the method includes obtaining the operating parameter data, including one of: receiving, via a communication interface, the operating parameter data from a device remote to the kitchen appliance; and retrieving, from memory of the kitchen appliance, the operating parameter data. [0025] In one or more embodiments, the method further includes displaying output information, based on the operating parameter data, via at least one of: a display associated with the kitchen appliance; and a user device remote to the kitchen appliance. [0026] In one or more embodiments, the output information is indicative of the user- defined deviation of the magnitude of the operating parameter. [0027] In one or more embodiments, the output information includes at least one of graphical information and textual information. [0028] In one or more embodiments, the rotatable user interface device includes a dial coupled to a drive device supported by a support member which is coupled to a mounting member for mounting the rotatable user interface device to the kitchen appliance, wherein the rotatable user interface device includes a sensor to sense axial movement of the dial and motor relative to the mounting member in response to an axial force applied by the user to the dial to cause the support member to resiliently flex, wherein the method includes performing the method in response to receiving, by the controller, a sensor signal from the sensor indicative of the axial movement. [0029] In a second aspect there is provided a method of controlling a kitchen appliance, the kitchen appliance including a rotatable user interface device electrically controllable by one or more controllers, wherein the method comprises: detecting, by the one or more controllers, angular displacement of the rotatable user interface device caused by user intervention; and controlling, by the one or more controllers, the rotatable user interface device to generate torque feedback indicative of angular displacement of rotatable user interface device between multiple simulated detent positions to represent one or more incremental changes to a magnitude of an operating parameter of the kitchen appliance. [0030] In one or more embodiments, controlling the rotatable user interface device to generate the torque feedback includes generating a counter-torque followed by a supplemental torque relative to the torque feedback during angular displacement between adjacent simulated detent positions. [0031] In one or more embodiments, the counter-torque is generated during a first angular range of displacement between adjacent simulated detent positions, and the supplemental torque is generated during a second angular range of displacement between the adjacent simulated detent positions. [0032] In one or more embodiments, the counter-torque increases linearly during the angular displacement within the first angular range of displacement. [0033] In one or more embodiments, a rate of change of the counter torque generated during the first angular range is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions. [0034] In one or more embodiments, the supplemental torque decreases linearly during the second angular range of displacement. [0035] In one or more embodiments, a rate of change of the supplemental torque is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions. [0036] In one or more embodiments, the counter-torque increases non-linearly during the angular displacement within the first angular range of displacement. [0037] In one or more embodiments, a rate of change of the counter torque generated during the first angular range is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions. [0038] In one or more embodiments, the supplemental torque decreases non- linearly during the angular displacement within the second angular range of displacement. [0039] In one or more embodiments, a rate of change of the supplemental torque generated during the second angular range is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions. [0040] In one or more embodiments, detecting the rotational displacement of the rotatable user interface device is based on an encoder signal received by the one or more controllers. [0041] In one or more embodiments, the encoder is a magnetic encoder configured to sense a magnetic field generated by a magnet associated with the rotatable user interface device. [0042] In one or more embodiments, detecting the angular displacement of the rotatable user interface device is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions. [0043] In one or more embodiments, the method includes: modifying, by the one or more controllers, the magnitude of the operating parameter based on the angular displacement between the multiple simulated detent positions; and controlling, by the one or more controllers, the kitchen appliance using the operating parameter, as modified, to prepare the consumable. [0044] In one or more embodiments, the method includes receiving, by the one or more controllers, a confirmation signal from a switch actuated by the user, wherein the magnitude of the operating parameter is modified in response to receiving the confirmation signal. [0045] In one or more embodiments, the method includes receiving, by the one or more controllers, a confirmation signal from the magnetic encoder in response to user displacement of the encoder toward or away from the magnet, wherein the magnitude of the operating parameter is modified in response to receiving the confirmation signal. [0046] In one or more embodiments, the rotatable user interface device includes a dial coupled to a motor supported by a support member which is coupled to a mounting member for mounting the rotatable user interface device to the kitchen appliance, wherein the rotatable user interface device includes a sensor to sense axial movement of the dial and motor relative to the mounting member in response to an axial force applied by the user to the dial to cause the support member to resiliently flex, wherein the method includes controlling the kitchen appliance to prepare the beverage or food in response to receiving, by the controller, a sensor signal from the sensor indicative of the axial movement. [0047] In a third aspect there is provided a method of controlling a kitchen appliance, the kitchen appliance including a rotatable user interface device electrically controllable by one or more controllers in electrical communication therewith, wherein the method comprises: detecting, by the one or more controllers, angular displacement of the rotatable user interface device over a period of time in response to torque caused by user intervention to provide user input to the kitchen appliance; determining, based on the angular displacement over the period of time, an angular acceleration of the rotatable user interface device; determining, based on the angular acceleration, a magnitude of a counter torque to counteract the user-applied torque; and controlling, by the one or more controllers, the rotatable user interface device to generate the counter torque to provide haptic user feedback. [0048] In one or more embodiments, the counter torque is inversely proportional to the acceleration. [0049] In one or more embodiments, detecting the rotational displacement of the rotatable user interface device is based on an encoder signal received by the one or more controllers. [0050] In one or more embodiments, the encoder is a magnetic encoder configured to sense a magnetic field generated by a magnet associated with the rotatable user interface device. [0051] In one or more embodiments, detecting the angular displacement of the rotatable user interface device is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions. [0052] In one or more embodiments, the rotatable user interface device includes a dial coupled to a motor supported by a support member which is coupled to a mounting member for mounting the rotatable user interface device to the kitchen appliance, wherein the rotatable user interface device includes a sensor to sense axial movement of the dial and motor relative to the mounting member in response to an axial force applied by the user to the dial to cause the support member to resiliently flex, wherein the method includes controlling the kitchen appliance in response to receiving, by the controller, a sensor signal from the sensor indicative of the axial movement. [0053] In a fourth aspect there is provided a kitchen appliance, comprising: a rotatable user interface device; and one or more controllers, electrically coupled to the rotatable user interface device and configured to perform a method according to the first aspect. [0054] In a fifth aspect, there is provided a kitchen appliance, comprising: a rotatable user interface device; and one or more controllers, electrically coupled to the rotatable user interface device and configured to perform a method according to the second aspect. [0055] In a sixth aspect, there is provided a kitchen appliance, comprising: a rotatable user interface device; and one or more controllers, electrically coupled to the rotatable user interface device, configured to perform a method according to the third aspect. [0056] In a seventh aspect there is provided a kitchen appliance, comprising: a rotatable user interface device; and a one or more controllers, electrically coupled to the rotatable user interface device, configured to selectively operate in multiple modes, wherein the multiple includes at least two of: a first mode, wherein the one or more controllers are configured to perform a method according to the first aspect; a second mode, wherein the one or more controllers are configured to perform a method according to the second aspect; and a third mode, wherein the one or more controllers are configured to perform a method according to the third aspect. [0057] Other aspects and embodiments will be appreciated through the detailed description of the examples. BRIEF DESCRIPTION OF THE FIGURES [0058] The invention is described, by way of non-limiting example only, by reference to the accompanying figures. [0059] Figure 1A is a top isometric view of an example of haptic feedback assembly. [0060] Figure 1B is a bottom isometric view of the haptic feedback assembly of Figure 1A. [0061] Figure 1C is a top view of the haptic feedback assembly of Figure 1A. [0062] Figure 1D is a cross-sectional view along A-A of the haptic feedback assembly of Figure 1A. [0063] Figure 1E is an exploded isometric view of the haptic feedback assembly of Figure 1A. [0064] Figure 2A is a cross-sectional view of another example of a haptic feedback assembly. [0065] Figure 2B is a top isometric view of the haptic feedback assembly of Figure 2A with the knob removed. [0066] Figure 2C is an exploded isometric view of the haptic feedback assembly of Figure 2A. [0067] Figure 3 is a functional block diagram of a kitchen appliance including the haptic feedback assembly of Figure 1a or Figure 2a. [0068] Figure 4A is a flowchart representing a method for controlling haptic feedback for a kitchen appliance. [0069] Figure 4B is a graph showing torque generated by the drive device of the haptic feedback assembly during angular displacement between two simulated detent positions. [0070] Figure 5A is a flowchart representing a method for controlling haptic feedback prior to preparation of a consumable. [0071] Figure 5B is a graph showing a magnitude of an operating parameter and an angular displacement of the haptic feedback assembly over time for an espresso appliance producing an espresso shot. [0072] Figure 5C is a graph showing a magnitude of an operating parameter and an angular displacement of the haptic feedback assembly over time for an espresso appliance producing an espresso shot, wherein the user interacts with the dial during the brewing process. [0073] Figure 6 is a flowchart representing a method for controlling haptic feedback during preparation of a consumable. [0074] Figure 7 is a flowchart representing a method for controlling haptic feedback during preparation of a consumable. [0075] Figure 8 is a flowchart representing a method for controlling haptic feedback during preparation of a consumable. [0076] Figure 9 is an isometric view of a coffee bean grinder including the haptic feedback assembly of Figure 1A or Figure 2A. [0077] Figure 10 is an isometric view of an espresso machine including the haptic feedback assembly of Figure 1A or Figure 2A. [0078] Figure 11 is a system diagram of a system for controlling a kitchen appliance. DETAILED DESCRIPTION [0079] The following modes, given by way of example only, are described to provide a more precise understanding of the subject matter of a preferred embodiment or embodiments. In the figures, incorporated to illustrate features of an example embodiment, like reference numerals are used to identify like parts throughout the figures. [0080] Referring to Figures 1A to 1E, there is shown an example of a haptic feedback assembly 100 for a kitchen appliance 900, 1000. [0081] The haptic feedback assembly 100 includes a rotatable user interface device 110 operatively coupled to a drive device 120, which in turn is electrically coupled to a controller 300 (see Figure 3). The rotatable user interface device 110 and drive device 120 can be supported upon a mounting member 124 for mounting the haptic feedback assembly 100 to a mounting surface of the kitchen appliance 900, 1000. [0082] The rotatable user interface device 110 can be provided in the form of a dial 110. The dial 110 has a body 111 defining an external surface for allowing the user to grip the dial 110 and apply a rotational force (i.e. a torque) to dial 110. The body 111 of the dial includes a central cavity 111a for receiving therein a portion 112 of the drive device 120 to operatively couple the dial 110 to the drive device 120. The central cavity 111a has a keyed section which corresponds to a profile of a shaft 112 of the drive device 120 to prevent rotational slippage between these two components 112, 110. [0083] The drive device 120 is preferably provided in the form of a motor 120. In a preferred form, the drive device 120 is provided in the form of a brushless DC electric motor 120. It has been found that the brushless DC electric motor 120 is preferable due to providing a suitable stall torque for particular applications herein. The motor 120 has a shaft 112 extending from a motor body 120a which is rotatable relative thereto. The drive device 120 further includes an electrical interface to electrically communicate with the controller 300. In particular, the motor 120 rotates the shaft 112 in response to one or more electrical signals received via the electrical interface indicative of an angular position, a rotation direction, and an amount of torque to be generated by the motor 120. The drive device 120 includes an axial passage passing therethrough. As clearly shown in Figure 1D, a stem portion of a magnet support structure 154 is tight fittingly received within a lower portion of the passage, wherein the magnet support structure 154 supports a magnet 152. Preferably, the magnet 152 is a diametrically magnetized magnet. The shaft 112 extending from a shaft bracket which is mounted over a top portion of the passage of the motor 120. As the motor 120 is electrically actuated, the shaft 112 and the magnet 152 held by the magnet support structure 154 rotate relative to a body of the motor 120. [0084] Referring to Figure 3, the controller 300 can be provided in the form of a microcontroller 300. The controller 300 may be a distributed controller 300, wherein multiple controllers 300 interface together to form a collective single controller 300. For example, the controller 300 may be a master controller 300 of the kitchen appliance 900, 1000 which interfaces with a printed circuit board 140 of the haptic feedback assembly 100, wherein processing is performed by the master controller 300 which interfaces with a printed circuit board 140 to electrically actuate and transfer one or more electrical signals. However, in some scenarios, the haptic feedback assembly 100 could have a dedicated controller 300 mounted thereto. In examples discussed herein, references to “the controller” are to be in reference to the one or more controllers 300 of the kitchen appliance 900, 1000. However, it will be appreciated by those skilled in the art that examples discussed can be implemented using a single controller configuration or a multi-controller configuration. [0085] As best shown in Figures 1D and 1E, the haptic feedback assembly 100 includes a mounting structure 124 including a body 124a having a shallow cylindrical profile. The mounting structure 124 includes an end wall structure 125 defining a closed end. A central void 125a (see Figure 1E) is defined in the end wall structure 125 to house a button156 as will be explained in further detail below. A rim 125b of a side wall structure 125c of the mounting structure 124 can house a printed circuit board 140. The button 156 can be mounted to the printed circuit board 140 and extend within the central void 125a defined in the end wall structure 125 of the mounting structure 124. The body 124a of the mounting structure 124 has extending radially therefrom one or more feet 125d. Each foot 125d includes a mounting hole 125e to receive a fastener therethrough to enable the mounting structure 124 to be mounted to the kitchen appliance 900, 1000. [0086] The haptic feedback assembly 100 further includes a support structure 130. The support structure 130 has a body 130a having a substantially shallow cylindrical profile including a substantially closed end wall structure 131a. In a preferred form, the end wall structure 131a is resiliently deformable. In one form, the end wall structure 131a is formed from a serpentine structure with gaps therebetween that promote deformation. The end wall structure 131a includes one or more mounting holes. A base 120b of the motor 120 is received within a shallow cavity 130b defined by the body 131 of the support structure 130. When an axially directed force is applied by the user to the dial 110, the dial 110, motor, 120 and support structure 130 fastened together move axially toward the mounting structure 124 due to elastic deformation of the support structure 130. To achieve this resilient deformation, the support member 124 is preferably made of a resiliently deformable polymer, such as plastic. Those skilled in the art will appreciate that many other resiliently deformable materials can be used. For example, the support structure 130 could be made of a resilient metal, such as a steel spring. The end wall structure 131a includes a central hole to receive therein a magnet supported by a magnet support structure 154 which is rotatably mounted to the motor 120, wherein the resilient deformation of the support structure moves the magnet toward the encoder housed within the void of the mounting structure, thereby allowing for an electronic detection of the axial depressing of the dial 110. At least one mounting foot 131, and preferably a plurality of mounting feet 131 extend radially outward from a support structure body 130a of the support structure 130, wherein each foot 131 has a hole extending therethrough to allow the support structure 124 to be fastened to the one or more feet of the mounting structure and a top cover of the haptic feedback assembly 100, as discussed later herein, as well as allowing mounting of the haptic feedback assembly 100 to a mounting surface of the kitchen appliance 900, 1000. [0087] The printed circuit board 140 (PCB 140) is secured on a rear surface of the end wall structure 132 of the support structure. The PCB 140 also includes holes 141 located therethrough to allow the PCB 140 to be fastened to the support structure 130 via respective holes 133 provided in the end wall structure of the support structure. The PCB 140 electrically interfaces with the controller 300 and the electrical interface of the motor 120, as well as performs certain sensing using a sensor. In one form, the PCB 140 can generate a pulse width modulated (PWM) signal which is received by the electrical interface of the motor 120 to thereby control the torque output to the dial 110. The magnet supported by the magnet support structure 154 can be sandwiched between the PCB 140 and the rear surface of the end wall structure of the support structure 130. The PCB 140 can include holes passing therethrough to allow for the PCB 140 to be fastened by fasteners to the fastened components (e.g., motor 120, dial 110, mounting structure, etc.). As discussed above, the PCB 140 can be provided in the form of a dedicated controller 300 (see Fig.3), such as a dedicated microcontroller 300 for the haptic feedback assembly 100 that communicates with a master microcontroller 300 of the kitchen appliance 900, 1000. However, it will be appreciated that this is optional. [0088] The sensor of the PCB 140 can be provided in the form of an encoder 150, such as a magnetic encoder 150. Hall sensors of the encoder 150 are located proximate to the magnet 152 (e.g., about 1.5mm to 2.5mm separation) to sense a change in magnetic field generated by the magnet 152 in response to rotational actuation of the motor 120. In response to detecting the rotational movement of the magnet, the encoder 150 generates an electrical signal indicative of an angular position of the magnet 152 with respect to the hall sensors of the encoder 150. The encoder 150 can generate a multi-bit signal indicative of the angular position. The encoder 150 signal is transferred to the controller 300 for processing. [0089] The PCB 140 also supports a button 156 provided in the form of a pushbutton. The pushbutton 156 extends downwardly from the PCB 140. As will be explained in further detail below, when an axial force is pressed against the dial 110 causing the motor 120 to be pushed downwardly, the support structure 130 resiliently flexes proximate to the perimeter of the body, resulting in the axial displacement of the PCB 140 and thus the pushbutton 156. The pushbutton 156 can then contact a surface to allow actuation thereof. [0090] A top and bottom cover 122, 124 can surround a majority of the motor 120 (i.e., the shaft 112 extending outwardly through the top cover 122 is not covered). The shaft 112 supports a bushing, such as a bearing, to minimize friction between the shaft 112 and the top cover 122 whilst reducing deflection of the shaft 112. A majority of the support structure 130 (i.e., the feet 131 are not covered), the magnet, the magnet support structure 154 and the PCB 140 are also surrounded by the top and bottom covers 122, 124. The top cover 122 includes a dome profile with feet 131 extending radially from the perimeter thereof, wherein each foot has a hole extending therethrough. The dome portion of the cover 122 houses mainly the motor 120. The bottom cover 124 includes a base structure with feet 131 extending radially therefrom, wherein each foot has a hole extending therethrough. The bottom cover 124 includes a cavity housing a pushbutton 156. The holes of the feet 131 of the top and bottom covers 122, 124 align with the holes of the support structure 130, wherein a fastener can extend through the aligned holes to secure the components together whilst also securing the haptic feedback structure to the mounting surface of the kitchen appliance 900, 1000. [0091] As mentioned earlier, the support structure 130 is resiliently deformable to allow for the dial 110 and motor 120 to move axially in response to a pushing force applied to the dial 110 by the user. As the support stricture flexes, the PCB 140 coupled underneath the support structure 130 moves axially toward and contacts the inner surface of the lower cover 124, thereby actuating the pushbutton 156. As a result, a push button signal is transferred to the controller 300 indicative of the user having pushed the dial 110. [0092] Referring to Figure 2A to 2C, there is shown an alternate example of a haptic feedback assembly 100 for a kitchen appliance 900, 1000. Similar to the embodiment discussed in relation to Figure 1A, the haptic feedback assembly 100 includes a motor 120 operatively coupled to a rotatable user interface device 110, such as a dial 110, which are supported by a mounting member 124. The motor 120 is electrically connected to the controller 300, such that the controller 300 can electrically control actuation of the motor 120 via an electrical interface. [0093] The shaft 112 of the motor 120 extends from a top surface thereof. The shaft 112 is received through a central hole in the mounting member 124 which is secured to a bracket secured by fasteners to the top surface of the motor 120. A bushing is operatively coupled to the shaft 112 to restrict the shaft 112 deviating. [0094] As discussed in relation to Figure 1A, the mounting member 124 is resiliently deformable to allow an axial push actuation of the pushbutton 156 to be detected, as discussed in further detail below. [0095] The haptic feedback assembly 100 further includes a frame body 220 and frame cover 240. The frame body 220 includes a cavity for receiving therein the motor 120. The motor 120 is effectively suspended within the frame cavity and does not contact the inner surface of the frame body 220. The frame cover 240 is fastened to the support structure 130 which is in turn fastened to the motor 120. Bolt heads of bolts 126 press against a top surface of the cover 240 and the body of the bolts 126 pass through holes in the cover 240, support structure 130 and rest within channels in the inner surface of the frame. The ends of the bolts 126 can be secured to the underside of the PCB 140 via cooperating nuts (not shown) to thereby secure the cover 240, support structure 130, motor 120, frame and PCB 140 together. As the cover 240 is secured to the support structure 130, which in turn supports the motor 120, the motor 120 is effectively suspended within the frame body. The shaft 112 of the motor 120 passes through central holes in the support structure 130 and the cover 240, wherein an end portion of the shaft 112 is tight fittingly received within a corresponding cavity within the dial 110. When a user applies the axial force to the dial 110, the axial force is transferred to the frame cover 240 which in turn transfers the axial force to the support structure 130. As the support structure 130 is resiliently deformable, the support structure 130 flexes inwardly within the cavity of the frame resulting in the motor 120 moving toward the PCB 140 located at the opposite end of the frame. The underside of the motor 120 has secured thereto the magnet. The PCB 140 has located thereon the magnetic encoder 150 device. Thus, when the motor 120 is displaced within the frame toward the PCB 140 in response to the axial force, the encoder is located closer to the encoder (e.g., about 0.5mm separation) such that the encoder 150 detects the change in magnetic force, and generates an encoder 150 signal indicative of the user having applied the axial force to the pushbutton 156. It is noted that a mechanical stop 210 is defined within the frame to stop the magnet and encoder coming into physical contact. [0096] The frame also includes one or more cooling vents 230 for cooling the motor 120. Additionally, the one or more cooling vents 230 may serve as one or more ports for electrical wires. [0097] Referring to Figure 3 there is shown a functional block diagram representing a kitchen appliance 900, 1000 including the haptic feedback assembly 100 of Figure 1A or Figure 2A. [0098] The kitchen appliance 900, 1000 includes a controller 300 including a processor 305, memory 310, and an input/output (i/o) interface, coupled together via a bus 316. The i/o interface 314 of the controller 300 has electrically connected thereto a plurality of peripherals. In particular, the peripherals include the drive device 120 and the encoder 150 which are electrically coupled to the controller 300 via the i/o interface 314. The PCB 140 of the haptic feedback assembly 100 of Figures 1A and 2A can be coupled with the i/o interface 314 of the controller 300 which is in turn coupled to an electrical interface of the drive device 120. The electrical interface of the drive device 120 may be its own dedicated motor controller. The kitchen appliance 900, 1000 can also include an output user interface device, such as a display 330. As discussed in relation to the embodiment of the haptic feedback assembly 100 of Figure 1A, the haptic feedback assembly 100 of the kitchen appliance 900, 1000 can additionally include a switch 156 such as a pushbutton 156 which is in electrical communication with the controller 300 via the i/o interface 314. In some embodiments, the kitchen application 900, 1000 can also include a communication interface 340 to allow a separate device, such as a mobile communication device, to communicate with and transfer data to and receive data from the kitchen appliance 900, 1000. In one form, the communication interface 340 is a wireless communication interface 340, such as Bluetooth ^TM. [0099] In some, but not necessarily all, embodiments, the haptic feedback assembly 100 can include an additional feedback device 350. In particular, in some embodiments, the drive device 320 can be used to provide haptic feedback to the user. However, in other embodiments, the drive device 120 may not be used for providing haptic feedback to the user. Thus, in this configuration, the one or more controllers 300 are configured to control one or more additional haptic feedback devices 350 to provide user feedback, such as haptic user feedback, to the user. Examples of additional feedback devices include one or more electroacoustic transducers (e.g., speakers), one or more vibration actuators (i.e. eccentric rotating mass actuators), one or more thermal feedback devices (e.g., heating elements), one or more electrostatic devices (e.g., a conductive coating and a passivation coating applied to the dial – see US Patent No.10,585,482 which is herein incorporated by reference in its entirety) which can provide various types of haptic feedback to the user whilst interacting with the dial of the kitchen appliance 900, 1000. [00100] It will be appreciated that the functional block diagram illustrated in Figure 3 does not show all components of the kitchen appliance 900, 1000 which are used for producing a consumable. For example, in relation to a grinder appliance, the functional block diagram does not show the motor 120 of the grinder mechanism. Furthermore, in relation to the espresso coffee appliance, the functional block diagram does not show a pump device. The purpose of the functional block diagram is to show the interface between the controller 300 and the haptic feedback assembly 100 of Figures 1A and 2A. However, the kitchen appliances are discussed in detail in relation to Figures 9 and 10. [00101] The haptic feedback assembly can be used to provide haptic feedback to a user regarding an operating parameter which is used by the kitchen appliance for the preparation of a consumable (i.e., beverage or food item). The operating parameter can be a variable for operating the kitchen appliance 900, 1000 that can altered by the user prior to operation of the kitchen appliance (see Figures 4, 5 and 8) or during operation of the kitchen appliance (see Figure 6 and 7). In some instances, the kitchen appliance 900, 1000, in particular the haptic feedback assembly 100, can selectively operate in modes. In a first mode (e.g., Figures 4 and 5), the user is able to selectively adjust the operating parameter prior to the kitchen appliance performing an operating cycle. In a second mode (e.g., Figure 6 and 7), the user is able to selectively adjust the operating parameter during the operating cycle being performed by the kitchen appliance. In a third mode (e.g., Figure 8), the user is able to interact with the haptic feedback device for defining various settings of the kitchen appliance. These various modes of operation will be discussed in more detail below. [00102] In some embodiments, the kitchen appliance 900, 1000 may have multiple operating parameters that can be altered. In one example, these operating parameters can be modified in the different modes. In one example, a first variable representing a first operating parameter can be altered prior to operation of the kitchen appliance 900, 1000 in the first mode, and a second variable representing a second operating parameter can be altered during operation of the kitchen appliance 900, 1000 in the second mode. For example, an integrated espresso and grinder appliance (discussed in further detail in Figure 10) can have a first operating parameter representing a grind size for the grinder mechanism which can adjusted by the user interacting with the rotatable user interface device 110 prior to performing a grinding operation to produce ground coffee beans. Continuing with this example, the integrated espresso and grinder appliance can have a second operating parameter in relation to a flow rate or a pressure rate, related to the pulling of an espresso shot, which can be adjusted by the user interacting with the rotatable user interface device 110 during the appliance’s operation to adjust this operation parameter on the fly during the operating cycle. In particular, the operation parameter can be adjusted through user interaction with the dial 110. [00103] The operating parameter data can be stored in memory of the kitchen appliance 900, 1000. The operating parameter data can be indicative of one or more magnitudes of the operation parameter for the kitchen appliance 900, 1000. Generally, the one or more magnitudes are stored in a non-volatile manner in memory 310 of the kitchen appliance. The operating parameter data can be pre- loaded in the memory of the kitchen appliance. However, in some forms, the operating parameter data can be received from an external device, such as a mobile communication device (e.g., smart phone scanning a QR code of coffee bean packaging to download from a remote processing system, such as a cloud server, first operating parameter data customized for grinding the coffee beans and second operating parameter data customized for brewing the ground coffee beans), wherein the operating parameter data is then stored in memory 310 of the kitchen appliance 900, 1000. In a simplistic form, the operating parameter data represents a single magnitude for an operating parameter of the kitchen appliance 900, 1000. For example, this simplistic example applies to appliances including a coffee grinder where the single magnitude is for the grind size operation parameter which can be stored in memory 310 and does not typically change during the operating cycle (i.e. the grinding process). In this example, the operating parameter can be adjusted prior to performing the operating cycle. However, in more complex configurations, the operating parameter data can represent an operating parameter having a varying magnitude over time (i.e. time series data) during an operation cycle to prepare the consumable. For example, the magnitude of a flow rate or pressure rate for pulling an espresso shot generally varies over time. The varying magnitude of the operation parameter over time can be referred to as an operating parameter profile. In some circumstances, the magnitude of an operating parameter can be updated in memory 310 for use in future operation cycles of the appliance. Continuing with the earlier example, if the user interacts with the rotatable user interface device 110 to adjust the grind size for the grinder appliance, magnitude data of the operating parameter is updated in memory 310, in a non-volatile manner. However, in other examples, adjustments to the magnitude of the operating parameter can be temporarily stored in memory 310 in a volatile manner and thus are not re-used for future operating cycles. Continuing with the integrated espresso coffee machine, adjustments to the pressure rate or flow rate during the operating cycle of the pulling an espresso shot are temporarily stored in memory 310 of the kitchen appliance 900, 1000 but are stored in a volatile manner such that in subsequent operating cycles of the espresso coffee appliance, the adjustments to the flow rate or pressure rate are not recalled from memory 310. In other embodiments, when the operating parameter is modified on the fly during an operating cycle, the operating parameter data stored in memory may be modified or adapted in response to the modification made by the user to the operating parameter. For example, the one or more controllers can be configured to learn from the user’s modification to the operating parameter during the operating cycle, thereby adjusting the operating parameter data so that in future operating cycles performed by the user, the modified operating parameter data may be used for operating the kitchen appliance. The modified operating parameter data is a combination of the original operating parameter data and the user-defined modification(s) to the operating parameter during one or more previous operating cycles. The modified operating parameter data may be user specific, such that the modified operating parameter data is stored in memory associated with a particular user profile. In one form, the controller 300 can be configured to receive a recipe or a user instruction, wherein the recipe or user instruction comprises of one or more operating parameters. [00104] To detect user rotatable actuation of the rotatable user interface device 110 about axis 199, the controller 300 uses an encoder signal received from the magnetic encoder 150. The encoder signal can be indicative of an angular position of the magnet associated with the drive device 120 relative to the encoder 150 signal. Hall sensors of the encoder are used to generate the encoder signal. In one form, the encoder signal is a multi-bit signal indicative of the angular position. The controller 300 can then perform processing on the angular position indicated by the encoder signal to determine a real-time angular position of the dial 110 which can then be used to determine a magnitude of haptic feedback to output to the user. This processing will be discussed in more detail below. The controller 300 can be configured to utilize calibration data, stored in memory 310 of the controller 300, to adjust the angular position indicated by the encoder signal. The calibration data can be indicative of an angular displacement between the magnet associated with the drive device 120 and the magnetic encoder 150 whilst the drive device 120 is positioned in a zero position. [00105] Various examples will now be described with reference to Figures 4 to 8 in relation to methods performed by one or more controllers of a kitchen appliance including the haptic feedback assembly. The memory 310 of the controller 300 has stored therein executable code 312 for performing the methods as discussed in more detail with respect to Figures 4 to 8. [00106] Referring to Figure 4A, there is shown a flowchart representing a method 400 of controlling haptic feedback for a kitchen appliance 900. [00107] At step 410, the method 400 includes detecting, by one or more controllers 300, angular displacement of the rotatable user interface device caused by user- applied torque. In particular, the user applies torque to the dial to rotate the rotatable user interface device 100 about axis 199. [00108] At step 420, the method 400 includes controlling, by the one or more controllers 300, the drive device 120 to generate torque feedback indicative of angular displacement of rotatable user interface device between multiple simulated detent positions to represent one or more incremental changes to a magnitude of an operating parameter for operating the kitchen appliance. [00109] Advantageously, the user is provided with an intuitive understanding of the deviation being made via the torque feedback. Additionally or alternatively, the user is provided feedback regarding the operation of the kitchen appliance 900, 1000, which in some instances may not be visible to the user. For appliances that already incorporate a dial 110, this unique form of haptic feedback does not detract from the limited interface space available to provide user feedback. Moreover, for existing user interface designs that incorporate a dial 110, the multi-purpose use of the dial 110 to allow user adjustment of the operation parameter whilst also providing user feedback through torque exerted upon the rotatable user interface device 110 avoids over-cluttering the user interface. [00110] Referring to Figure 4B, there is shown a graph 450 showing an example of the torque 470, 480 generated by the drive device 120 of the haptic feedback assembly 100 during angular displacement between a plurality of simulated detent positions 460a-d. For example, the dial can be located at a starting detent position 460a having a 0 degree angular displacement. The user can then apply a torque to the dial 110 thereby rotating the dial toward the next adjacent detent position 460b. As shown in Figure 4B, as the angular displacement increases whilst approaching the midpoint 455a, the controller 300 controls the motor 120 to increase the counter torque 470a. In the example shown in Figure 4B, the counter torque 470a increases linearly as the angular displacement of the dial approaches the angular displacement midpoint 455a. It will be appreciated that counter torque can be non-linear and that the linear increase is merely an example. When the angular displacement has reached the midpoint 455a, the controller 300 controls the motor 120 and switches the rotational direction thereby generating a supplementary torque 480a to supplement the user’s torque applied to the dial to thereby encourage the angular displacement toward the adjacent detent position 460b. As can be seen in Figure 4B, the supplementary torque decreases as the angular displacement increases whilst approaching the adjacent detent position 460b. Again, in this example, the supplemental torque decreases linearly over angular displacement of the dial 110. The sudden change (as illustrated by the dotted line) in counter torque to supplemental torque at the midpoint 455a) as well as the variable counter and supplemental torque simulates rotation of a dial between mechanical detents. As shown at the adjacent detent position 460b, no torque is applied to the dial to urge the dial to rotate clockwise or anticlockwise, thus the dial is stationary at the adjacent detent position 460b. It will be appreciated that the dial can again be rotated by the user to the next adjacent detent position 460c and the same process repeats. In particular, the user can apply a torque to the dial 110 thereby rotating the dial toward the next adjacent detent position 460c. As shown in Figure 4B, as the angular displacement increases whilst approaching the midpoint 455b, the controller 300 controls the motor 120 to increase the counter torque 470b. When the angular displacement has reached the midpoint 455b, the controller 300 controls the motor 120 and switches the rotational direction thereby generating a supplementary torque 480b to supplement the user’s torque applied to the dial to thereby encourage the angular displacement toward the adjacent detent position 460c. As can be seen in Figure 4B, the supplementary torque decreases as the angular displacement increases whilst approaching the adjacent detent position 460c. It will also be appreciated that the dial 110 could be rotated back from detent position 460b back to 460a, but the reverse process applies. [00111] Referring to Figure 5A, there is shown a flowchart representing a more detailed example of the method of controlling haptic feedback for a kitchen appliance discussed in relation to Figure 4A. The method 500 will be discussed with respect to a kitchen appliance 900 in the form of a coffee bean grinder, wherein the dial 110 can be rotated by the user to adjust the grind size operation parameter prior to performing a grind cycle. [00112] At step 510, the method 500 includes the user beginning to apply external actuation to the rotatable user interface device 110. It will be appreciated that the detection of the rotation of the dial occurs shortly after rotation begins. Generally, an operating parameter scale may be displayed adjacent the dial or on an electronic screen to indicate available positions which the dial can be rotated by the user. The one or more controllers can control a dead front display (using a backlit user interface) to present a dial scale dynamically. The scale may be presented in a dynamic manner such that the initial magnitude of the operating parameter as indicated by the operating parameter data aligns with a dial marker on the dial. This configuration avoids needing to actuate the rotation of the dial to a starting position, but rather the dial is already located in the starting position due to the dynamic presentation of the dial scale on the dead front display of the kitchen appliance. In this embodiment, the dial can be moved between a defined number of simulated detent positions. In one example, the dead front display may present a dial scale with a plurality of markers, wherein each marker highlights an angular position for a simulated detent position. Each marker may have located adjacent thereto a numeral or graphic indicative of the magnitude of the operating parameter. Thus, in the coffee grinder example, there may be ten grind sizes for the user to select from, wherein a scale is presented on the dead front display indicative of ten different markers representing the ten simulated detent positions which the user can rotate the dial so as to modify the magnitude of the grind size operating parameter. [00113] At step 520, the method 500 includes the encoder 150 detecting the real time angular position of the rotatable user interface device 110. As discussed in relation to Figures 1A and 2A, the encoder 150 can detect an angular position of the magnet associated with the motor 120 relative to the encoder 150. An encoder signal indicative of the angular position is generated which is transferred to the controller 300 for processing to determine the angular position of the dial 110, and thus the angular displacement and degree of deviation. In one form, detecting the angular displacement of the rotatable user interface device is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions. The mapping data can be stored in memory accessible by the one or more controllers 300. The sensed magnetic field by the encoder can be used as a key in the mapping data, provided in the form of a lookup table, to determine the angular position of the dial. [00114] At step 530, the method 500 includes the one or more controllers 300 determining the deviation. For example, the one or more controllers 300 may retrieve from memory 310 the angular position of the dial 110 associated with the current magnitude of the operating parameter as indicated by operating parameter data. The one or more controllers 300 can then determine the displacement between the real- time angular position of the angular position indicated by the operating parameter data to determine the deviation in angular position (i.e. the angular displacement). For example, the operating parameter indicated by the operating parameter data for the grind size may be the fifth detent position which may have a 90 degree angular position relative to a reference position. The user may initially rotate the dial clockwise resulting in the angular position being 95 degrees relative to the reference position. Thus, the angular displacement may be the difference between the angular positions, namely 5 degrees of angular displacement. [00115] At step 540, the method 500 includes the one or more controllers 300 determining a magnitude of a counter torque or supplemental torque to be generated in response to the detected deviation caused by the user actuation of the dial 110. [00116] In one form, the magnitude of the counter-torque or supplemental torque can be determined based on a lookup table. The magnitude of the of the current dial detent position (e.g., 5^th detent position) can be used as a key to query the lookup table. In one form, the lookup table includes a magnitude function (linear or non- linear) which is dependent upon on the angular displacement as the magnitude of the counter torque or supplemental torque can vary according to the amount of angular displacement by the user. The magnitude function can be weighted according to the magnitude of the detent (e.g., the magnitude determined for movement between the 8^th detent position to the 9^th detent may be substantially greater than movement between the 1^st detent position to the 2^nd detent). The one or more controllers can then use the current angular position and the function obtained from the lookup table to determine a magnitude of the counter torque or supplemental torque to be generated by the drive device. [00117] At step 550, the method 500 includes the one or more controllers 300 controlling the drive device 120 to generate the counter torque or supplemental torque. [00118] In a preferred embodiment, controlling, by the one or more controllers 300, actuation of the drive device 120 to output counter torque or supplemental feedback simulates movement of the dial between adjacent detent positions of the dial. In one form, the magnitude of the counter torque continues to increase during clockwise or anti-clockwise displacement within a first angular range from a first detent position toward a midpoint position. As the user continues to rotate the dial slightly past the angular midpoint and past the first angular range, the controller controls the drive device to apply a supplemental (additional torque) with respect to the direction of the user applied torque to urge the user toward the second detent position during a second angular range. This change between countering the user applied torque and then supplementing the user applied torque assists with simulating the movement of the dial detent positions. It will be appreciated that at each simulated detent position, the one or more controllers effectively maintain the dial in the detent position so as provide to the user a sense of a resting position for the dial. To simulate this resting position with a brushless DC electric motor, the one or more controllers can generate a counter cogging torque to counter the cogging force experienced by the drive device 120 so that the drive device 120 is maintained in the respective detent position. The mapped cogging torque for a plurality of angular positions can be stored in memory accessible by the one or more controllers. The angular position indicated by the encoder signal can be used as a key to query the mapped cogging data to determine the cogging torque (clockwise or anti-clockwise) to generate the counter cogging torque. [00119] In one form, the counter-torque can increase linearly during the angular displacement within the first angular range of displacement. The rate of change of the linear increase of the counter torque can be based on a magnitude of the operating parameter associated with the adjacent simulated detent positions. For example, the rate of change of the counter torque magnitude between the fifth detent position to the sixth detent position may be greater than the rate of change of the counter torque magnitude for movement between the second detent position and the third detent position. In an alternate embodiment, the counter-torque can increase non-linearly during the angular displacement within the first angular range of displacement. For example, the rate of change may be sinusoidal. [00120] Furthermore, the supplemental torque can decrease linearly during the second angular range of displacement. The rate of change of the supplemental torque is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions. For example, the rate of change of the magnitude for the supplemental torque during angular displacement between position 5 to position 6 would be greater than the rate of change of the magnitude for the supplemental torque during angular displacement between position 2 to position 3. In an alternate embodiment, the supplemental-torque can decrease non-linearly during the angular displacement within the first angular range of displacement. For example, the rate of change may be sinusoidal. [00121] Whilst the above example has described rotating the dial in a clockwise direction (e.g., angular displacement from the fifth detent position to the sixth detent position may be considered a clockwise rotation of the dial), a similar methodology can apply when the dial is rotated in a counter-clockwise direction. As the user rotates the dial counter-clockwise, the one or more controllers generate the counter- torque in the clockwise direction until the angular position of the dial meets or exceeds the midpoint between the previous detent position and the adjacent detent position, wherein the one or more controls generate the supplementary torque in the anti-clockwise direction to urge the user to rotate the dial toward the adjacent detent position. It will be appreciated by those skilled in the art that once the dial has been displaced to the adjacent detent position, the process can repeat again. For example, the user may again apply torque to rotate the dial from the sixth detent to the seventh detent, wherein the process described above is performed again by the controller. Similarly, those skilled in the art will appreciate that the same process will also occur if the dial is rotated back to the original detent position (i.e. rotating the dial from the sixth detent back to the fifth detent). [00122] Whilst the above example has indicated that the counter torque and the supplemental torque switch over at the midpoint between the adjacent detent positions, it will be appreciated that the midpoint is just an example of the cross-over point and that other positions could be used. For example, the cross-over point could occur once 30% of the angular displacement between the detent positions has been travelled. Alternatively, the cross-over point could occur once 60% of the angular displacement between the detent position has been travelled. The advantage of the midpoint (i.e.50%) is that the cross-over point is located in the same position whether the user is rotating the dial in clockwise or counter clockwise directions. [00123] At step 560, the method 500 includes the one or more controllers 300 determining whether a user confirmation signal has been received. This step is optional. If the one or more controllers 300 have not received a user confirmation signal within a particular timeframe (e.g., 20 seconds after final detected angular displacement of the dial), the method 500 proceeds back to step 510. Otherwise, the method proceeds to step 570. In one form, the confirmation signal can be received by the one or more controllers from a switch actuated by the user in response to depressing the haptic feedback assembly in an axial manner. In other embodiments, as described earlier, the confirmation signal can be received from the magnetic encoder in response to user displacement, via depressing the haptic feedback assembly along axis 199. [00124] At step 570, the method 500 includes the one or more controllers 300 updating the magnitude of the operating parameter in memory 310. The update is generally occurring in a non-volatile manner. In one example, prior to receiving the confirmation signal, the operating parameter stored in memory may be indicative of the fifth detent position. [00125] At 580, the method 500 includes the one or more controllers 300 operating the kitchen appliance 900 according to the updated operating parameter. [00126] Referring to Figure 5B there is shown a graph 590 presenting the magnitude of an operating parameter and an angular displacement of the haptic feedback assembly over time for an espresso appliance producing an espresso shot utilising the method 500. The graph 590 also shows a dial indicator 110 including a starting position and a dial marker to thereby clearly show the amount of rotation of the dial 110 during the espresso brewing process. When the brewing process starts the marker of the dial is aligned with the starting marker. Over the next 3 seconds, the pump pressure increases to approximately 3 bars at shown at 591. During this 3 second interval, the controller controls the dial 110 to rotate approximately 108 degrees of angular displacement relative to the starting angular position whilst also controlling the pump operation. From the 3 second point in time to the 8 second point in time, the pump pressure is maintained and thus the dial 100 is maintained stationary and thus does not rotate. From the 8 second point in time to the 14 second point in time, the pump pressure again increases from point 592 linearly to approximately 9 bars as shown at point 593, wherein the dial 110 is rotated by the motor 120 under control by the controller 300 to approximately 324 degrees relative to the starting angular position. The pressure generated by the pump is then maintained at approximately 9 bars between the 8 second point in time to the 22 second point in time as shown by 594. The pump pressure is then reduced to 3 bars from the 22 second point in time to the 27 second point in time shown at 595, wherein during this time the dial 110 is rotated anticlockwise back to the 108 degree angular position relative to the starting position. Then between the 27 second point in time to the 29 second point in time, the pump pressure is linearly reduced to 0 bars. Advantageously, the rotation of the dial 110 during the operation of the espresso appliance provides haptic and/or visual feedback to the user to understand the adjustment in the operating parameter (in this case the pump pressure) over time during the brewing process. [00127] Referring to Figure 5C there is shown a further graph based on the graph 590’ of Figure 5B wherein the user applies torque to the dial 110 midway through the brewing process so that the operating parameter during the brewing process is modified according to the user’s interaction with the dial 110, and thus customising the preparation of the beverage according to the user’s taste. In particular, the standard operating profile from Figure 5B is shown in solid line Figure 5C and the modified operating profile is shown in broken line in response to the user’s interaction with the dial 110. At the 20 second point of the brewing process, the user interacts with the dial 110 to apply torque in an anticlockwise direction to move the dial to approximately 270 degrees relative to the starting position as shown at point 597, which results in the controller 300 controlling the pump to lower the pump pressure applied by to 7.5 bar. The controller 300 controls the motor 120 during this period of time whilst the user is applying torque to generate a counter torque to the user’s interaction with the dial 110, but in this case the user holds the dial stationary at an angular position of 270 degrees, thereby maintaining the reduced brewing pressure for approximately 3 seconds. At approximately 23 seconds into the brewing process, the user stops applying torque to the dial 110 to allow for the controller 300 to control the pump pressure to follow the operating profile as shown in solid line in Figure 5C, wherein the dial 110 would continue to rotate counter-clockwise per the previous example discussed in relation to Figure 5B. [00128] A practical example will now be described in relation to the application of methods 400 and 500 for the purpose of clarity. A first simulated detent position may be defined at 20 degrees relative to a home position for the dial 110 (the home position can be notionally defined as the zero position of the motor 120 as defined in the calibration data) of a coffee bean grinder. A second simulated detent position may be defined at 40 degrees relative to the home position. The initial rotation of the dial 110 from the first detent position toward the second detent position initially results in the one or more controllers controlling the drive device 120 to generate an increasing counter torque to oppose the user-applied torque until the dial 110 reaches the 30-degree position (i.e., the midpoint between the first and second detent positions). When the dial moves past the 30-degree position, the one or more controllers 300 control the drive device 120 to generate a supplemental torque to supplement the user-applied torque to thereby urge the dial to rotate toward the 40- degree detent position. As the dial approaches the second detent position, the supplemental torque reduces such that when the dial reaches the 40 degree angular position (i.e. the second detent position), the drive device generates no further supplemental force, thereby simulating a detent position. However, as explained above, due to the cogging torque of the motor 120, the controller 300 can be configured to control the generation of torque feedback (counter or supplemental) to cancel out the cogging torque, such that the user experiences no torque being applied at the detent position. [00129] Whilst the rate of change of the torque or supplemental feedback can vary according to the magnitude associated with the detent positions in memory, the rate of change may increase inversely to the magnitude of the operating parameter. For example, assuming that for a coffee bean grinder appliance where an increase in the grind size magnitude results in a coarser grind (i.e. a grind size of 10 has a more coarse grind size compared to a grind size of 5), a decrease in grind size (i.e. movement of the dial 110 toward the first detent position on a scale of one to ten detents) can result in an increase in the magnitude of the torque feedback to simulate the tightening of a tap due to the restriction of flow rate through the ground coffee beans. This relationship can be defined in a lookup table stored in memory of the kitchen appliance 900. [00130] As discussed above, the controller 300 can be electrically coupled to an output device such as an electronic display 330 of the kitchen appliance 900 to display output information. Additionally or alternatively, the controller can be in wireless communication with a user device, such as a smart phone, tablet, laptop, etc., wherein output information can be transferred via the communication interface and displayed via an output device (e.g., screen) of the user device. The controller 300 can be configured to display 330 output information, based on the operating parameter data, via a display 330 associated with the kitchen appliance 900 or transfer the output information wirelessly to the user device for output via an output device of the user device. For example, the output information is indicative of the determined deviation of the operating parameter. If the grind size parameter for the grinder appliance was currently set to five (for a grind size range between one and ten), the user may rotate the dial 110 an particular angular distance for the controller 300 to simulate movement from the fifth detent to the fourth detent to indicate that the deviation in the grind size has been reduced by a single unit to a grind size of four meaning the grind size is finer. Graphical information and/or textual information can be presented via the display 330 or the user device under control of the controller 300 to indicate this deviation in the grind size parameter. [00131] In one variation, after receiving user input or instruction, the controller 300 can control rotational actuation of the dial 110 throughout the grind cycle, wherein the rotational actuation is controlled according to a magnitude of another operating parameter which changes over the grinding cycle. For example, the grinder appliance can have stored in memory 310 a cycle length operating parameter indicative of the timeframe which the grind cycle. In one example, the grind cycle may be set to 15 seconds. Prior to beginning the grinding operation, the controller 300 can control the drive device 120 to move an angular position representing the 15 second time frame. When the grinding operation commences, the controller 300 controls the drive device 120 to rotate the dial 110 at a sufficient angular velocity for the dial 110 to return to an angular home position representing 0 seconds. Thus, auto-rotation of the dial 110 by the controller 300 provides an alternate, visual feedback of the remaining time to complete the grinding cycle. This type of feedback can be advantageous for vision impaired users who may be able to feel the rotation of the dial 110 to appreciate the time remaining on the grinding cycle. [00132] Referring to Figure 6, there is shown a flowchart representing a further method 600 of controlling haptic feedback for a kitchen appliance 1000. [00133] At step 610, the method 600 includes controlling, by the one or more controllers 300, actuation of the drive device 120 to angularly displace the rotatable user interface device based on operating parameter data indicative of a magnitude of an operating parameter to be used by the kitchen appliance during preparation of a consumable. [00134] At step 620, the method 600 includes detecting, by the one or more controllers 300 during the preparation of the consumable, a deviation in the angular position of the rotatable user interface device 100 caused by a user-applied torque. The deviation in the angular position represents a user-defined deviation in the magnitude of the operating parameter for preparing the consumable. [00135] At step 630, the method 600 includes controlling, by the one or more controllers 300 during the preparation of the consumable, actuation of the drive device 120 or a haptic feedback device 350 of the kitchen appliance 1000, thereby generating haptic user feedback based on the deviation in the angular position of the rotatable user interface device. [00136] Advantageously, the rotation of the rotatable user interface device provides haptic and/or visual feedback to the user in terms of the manner which the kitchen appliance is operating, according to the operating parameter, during the operating cycle. Furthermore, the generation of the haptic feedback in response to the user- applied torque to the rotational user interface device provides the user with a novel and intuitive feedback system in relation to user adjustments to the operating parameter. [00137] In relation to the kitchen appliance 1000 performing an operating cycle, the operating cycle can vary depending upon the type kitchen appliance 1000. Examples are discussed in relation to Figure 10, such as an espresso machine. In relation to the one or more controllers 300 attempting to rotate the dial 110 during the operating cycle, the one or more controllers 300 control the drive device 120 to attempt to rotate the rotatable user interface device 110 according to a determined magnitude (or magnitudes over time) of the operating parameter for the kitchen appliance 1000. It will be appreciated that whilst the controller 300 generates an electrical signal to rotate the dial 110, the dial 110 may be prevented from rotation by user actuation of the dial 110. For example, the user may hold the dial 110 sufficiently to maintain a particular flow rate whilst pulling an espresso shot while the drive device 120 attempts to rotate the dial 110 toward a lower flow rate based on the operating parameter data. [00138] In relation to an espresso coffee appliance, the operation parameter can be the flow rate or the pressure rate. The operating parameter data may be stored in memory 310 indicative of the one or more magnitudes (such as an array of numbers, where each number represents a magnitude for an operating parameter at a particular point in time; it will be appreciated that more complex data structures could be used) for the operation parameter. In relation to an espresso coffee appliance, the operating parameter data may be an operating parameter profile where the magnitude of the operation parameter can vary according to time. Thus, the operation parameter profile can define a varying magnitude of the operation parameter, such as a varying flow rate or the pressure rate over time. In a preferred form, the operating parameter data is time series data, wherein each point in time of the time series data has associated therewith data indicative of a respective magnitude of the operating parameter. The varying magnitude of the operation parameter can be considered a set point parameter over the operating cycle. [00139] If the operating parameter data includes data indicative of one or more magnitudes of the operating parameter, each magnitude can be converted into a discrete angular position by the controller 300. For example, if the operating parameter is a pressure operating parameter, the magnitude range may be indicative of 0 to 10 bars of pressure over time. This magnitude range can then be translated, by the one or more controllers, into an angular displacement to rotate the dial 110. Thus, if a full rotation of the dial 110 is possible, each bar of pressure can be represented by 36 degrees of angular displacement. During the operating cycle, the dial can be rotated by 36 degrees for each unit of pressure. For example, if at the start of the pressure profile, the pressure changes from 0 bars to 9 bars, the controller 300 generates an electrical signal transferred to the electrical interface of the motor 120, wherein the electrical signal is indicative of rotation of the motor 120 to an angular position of 324 degrees relative to the reference position. It will be appreciated that in some other circumstances, the magnitude of the parameter data may be stored in the form of an angular position, thus meaning the translation of the magnitude of the operating parameter to an angular position is not required. It will be appreciated that whilst integer intervals for the magnitude are being discussed, it is possible that decimal intervals (e.g., 1.4 bars) can also be achieved. [00140] Once the user interacts with the dial to apply a user-applied torque to the dial, the one or more controllers control the operation of the kitchen appliance based on the user-defined deviation in magnitude of the operating parameter and the operating parameter data. In preferred configurations, the controller 300 can be configured to vary the magnitude of torque feedback output by the rotatable user interface device 110 according to the magnitude of the deviation. For example, in relation to a coffee bean grinder appliance, a higher magnitude of torque feedback can be exerted on the dial 110 when the grind size is being reduced compared to the torque feedback that is exerted on the dial 110 when the grind size is being increased. This configuration is used to provide feedback to the user regarding the ease or difficulty of water passing through the ground coffee when producing espresso coffee. In another example in relation to the coffee espresso appliance, if the dial 110 is rotated by the user to increase the pressure rate, a higher magnitude of torque feedback is exerted on the dial 110 compared to the user decreasing the pressure rate which results in a lower magnitude of torque feedback being exerted on the dial 110 by the drive device 120. [00141] In a preferred form, the one or more controllers control the actuation of the drive device to rotate the rotatable user interface device in a first rotational direction in response to a positive change of magnitude of the operating parameter over time as defined by the operating parameter data. Furthermore, the one or more controllers control the actuation of the drive device to rotate the rotatable user interface device in a second direction in response to a negative change of magnitude of the operating parameter over time as defined by the operating parameter data. [00142] In one form, after the user stops exerting the user-applied torque, the one or more controllers are configured to control the drive device to angularly displace the rotatable user interface device to correct the angular position of the rotatable user interface device in accordance with the operating parameter data. [00143] In one variation, in response to detecting the deviation in the angular position of the rotatable user interface device caused by user-applied torque, the method further includes the one or more controllers modifying at least some of the operating parameter data to at least partially compensate for the user-defined deviation of the magnitude of the operating parameter, wherein operation of the kitchen appliance is performed based on the operating parameter data as modified. In one form, the preparation of the consumable by the kitchen appliance is defined by the operating parameter data to be conducted in a first period of time, and wherein the operating parameter data as modified in response to detecting the user- applied torque results in the consumable being prepared by the kitchen appliance in a second period of time, wherein the second period of time differs to the first period of time. For example, if the flow rate operating parameter is increased during the operating cycle for pulling an espresso shot, the operating parameter data can be modified such that the total volume of the espresso shot is equivalent to the pre- modified operating parameter data. [00144] In one form, determining a magnitude of the haptic user feedback to be generated based at least on a magnitude of the user-defined deviation. This can include obtaining, by the one or more controllers from one or more sensors, real-time data indicative of the kitchen appliance operating in response to the user-defined deviation in the magnitude of the operating parameter. Furthermore, this process can include determining, by the one or more controllers and based on the operating parameter data and the real-time data, an error, The determination of the magnitude of the haptic user feedback is further based on the error. [00145] In one form, the haptic feedback is a counter-torque generated by the drive device to counter the user-applied torque to the rotatable user interface device. The counter torque can be generated by the drive device which can be provided in the form of a brushless DC electric motor. In one form, the drive device controls the generation of the counter-torque further based on cogging torque data, wherein the cogging torque data is indicative of a magnitude of cogging torque of the drive device at a plurality of angular positions. The one or more controllers control the drive device to output the counter torque to additionally counteract the cogging torque based on the angular position of the rotational user interface device. [00146] In one form, the consumable is a beverage. In one example, the operating parameter is an operating flow rate over time to produce the beverage. In another example, the operating parameter is an operating temperature over time to produce the beverage. In a specific form, the consumable is espresso, wherein the operating parameter is operating pressure exerted upon coffee grounds over time to produce the espresso. [00147] Referring to Figure 7 there is shown a flowchart representing a more detailed example of providing haptic feedback to a user of a kitchen appliance. [00148] In particular, at step 710, the method includes the kitchen appliance beginning operation. As the kitchen appliance begins operation in response to user input, the one or more controllers rotate the dial based on the operating parameter data. Additionally, the one or more controllers operate the kitchen appliance at least based on the operating parameter data. As explained in further steps of this method, the one or more controllers operate the kitchen appliance according to a set point operating parameter. When the user has not applied a user applied torque to the dial, the set point parameter is set to the operating parameter as defined in the operating parameter data. However, in later loops of the method 700, if the user has applied a user applied torque to the dial, the set point parameter is adjusted in memory based on the operating parameter data and based on the deviation in the angular position caused by the user-applied torque. For example, the user may provide input to prepare an espresso shot. The one or more controllers rotate the dial according to operating parameter data representing an espresso recipe. The operating parameter data can be indicative of one or more operating parameters (flow speed, pressure, etc.) which represent one or more set point operating parameters. [00149] Any time after step 710, the user may interact with the haptic feedback assembly 100 by rotating the dial 110 to adjust the associated operating parameter throughout the operating cycle of the kitchen appliance 1000 for the preparation of the consumable. For the purposes of clarity, Figure 7 shows the user interacting with the dial 110 at step 715 occurring between step 710 and step 720. But it should be appreciated by those skilled in the art that the user actuation could occur any time after step 710 and before step 770. For example, throughout half the operating cycle, the loop defined by steps 720 to 770 may be performed per normal where the dial 110 is rotated according to the magnitude of the operating parameter defined by the operating parameter data. However, the user may then intervene half-way through the operating cycle, wherein the deviation between the expected angle and the real time angle will be more significant such that haptic feedback is provided via the haptic feedback assembly 100. This timing of the user interaction is denoted by the broken line of step 715 in Figure 7. [00150] Continuing with the discussion of method 700, at step 720, the method includes the one or more controllers 300 determining the real time angular position of the rotatable user interface device 110. As explained in relation to earlier examples, the encoder 150 senses, using hall sensors, a change in the magnetic field of the magnet associated with the motor 120, wherein the encoder signal is indicative of the real time angular position of the rotatable user interface device 110. [00151] At step 730, the method 700 includes the one or more controllers 300 determining a deviation between the real-time angular position and a set point angular position defined by the operating parameter data. The operating parameter data is indicative of the magnitude of the operating parameter over time (i.e. time series data). The operating parameter as defined over time operates as a set point parameter. The controller 300 determines the set point angular position based on the magnitude of the operating parameter at the current point in time, which is then translated into a set point angular position based on an available angular range of displacement for the dial 110 (e.g., 360 degree or less). However, it will be appreciated that the reverse is also applicable. In particular, the operating parameter data may be indicative of the angular position of the dial over time for the operating cycle of the kitchen appliance. The one or more controllers then translate the angular position of the dial to a magnitude of the operating parameter which can then be used to electrically control one or more operating components of the kitchen appliance. [00152] At step 740, the method 700 includes the one or more controllers 300 modifying, if required, the set point parameter based on the deviation. [00153] At step 750, the method 700 includes the one or more controllers 300 determining a magnitude of torque feedback to be generated in response to the detected deviation. In one form, the controller 300 can multiply a torque magnitude factor to the angular deviation to determine the magnitude of torque feedback. For example, the torque feedback can be calculated by the one or more controllers 300 according to Equation 1 outlined below: T_haptic = (PEXP – PRT)*k Equation 1 wherein: Thaptic is the magnitude of the torque; P_EXP is the expected angular position of the dial; PRT is the real-time angular position of the dial; and k is a torque magnitude factor. [00154] At step 760, the method 700 includes the one or more controllers 300 controlling the drive device 120 based on the determined magnitude of the torque feedback. The one or more controllers 300 can generate an electrical signal indicative of the magnitude of the torque feedback which is received via the electrical interface of the drive device 120 to thereby exert the torque feedback via the dial 110. [00155] At step 770, the method 600 includes the one or more controllers 300 determining if the kitchen appliance 1000 has completed the operating cycle. If the operating cycle has been completed, the method 700 ends. If the operating cycle has not ended, the method proceeds back to step 710. Otherwise, the method 700 ends. [00156] During the operating cycle, the controller 300 can display 330, via an output device like an electronic display 330 of the kitchen application or a user device such as a smart phone or the like, output information in relation to the magnitude of the operating parameter and/or the operating parameter profile. For example, a graphical representation of the operating parameter over time can be presented on the display 330 or the user device. A marker can then progress across the display 330 to indicate the current magnitude of the operating parameter throughout the operating cycle. For example, for the first half of the operating cycle, the controller 300 may operate the kitchen appliance 1000 as indicated in the operating parameter profile. The marker will follow the plot of the operating profile displayed 330 on the display 330. However, half-way through the operating cycle, the user may rotatably actuate the dial 110, causing the magnitude of the set point operating parameter to either increase or decrease relative to the operating parameter profile data. The marker is then displayed 330 to be offset relative to the plot to indicate to the user the modification to the operating parameter caused by the user’s interaction with the dial 110. If the user stops interacting with the dial 110 whilst the kitchen appliance 1000 is still performing the operating cycle, the dial 110 is rotated, if required, to represent the original set point operating parameter of the operating parameter profile, and the marker is displayed 330 to realign with the original graphical plot of the operating parameter profile displayed 330 on the display 330. Thus, at the end of the operating cycle, two plots are presented on the display 330, wherein the first plot is the operating parameter profile and the second plot is the operating parameter used during the operating cycle over time. [00157] In some configurations, the controller 300 can be configured to control the drive device 120 to exert a magnitude of the torque feedback according to a magnitude of the deviation. For example, the magnitude of the torque feedback can be a function of the magnitude of angular displacement between the real-time angular position of the dial 110 and the intended angular position based on the set point operating parameter of the operating parameter profile. For example, if the pressure at a point in time is intended to be 6 bar, and the user rotates the dial 110 to a position equal to 10 bar, the magnitude of the torque feedback will be greater at 10 bar compared to when the dial 110 is rotated to an angular position equivalent to 6.6 bar. [00158] In a preferable configuration, the method 600 includes the one or more controllers 300 controlling the actuation of the drive device 120 to rotate the rotatable user interface device 110 in a first rotational direction in response to a positive change of the set point parameter over time, and in a second direction in response to a negative change of the set point parameter over time. For example, the first direction is counterclockwise, and the second direction is clockwise. However, it will be appreciated that an alternate configuration is possible, for example, the first direction is clockwise, and the second direction is counterclockwise. [00159] It is possible that the haptic feedback can additionally provide an indication to the user of the discrepancy between the adjusted set point operating parameter, as defined by user actuation of the dial 110, and a sensed operating parameter of the operating cycle. For example, whilst the user may indicate that there be a substantial increase in pressure by turning the dial 110 significantly, it may be practically impossible to achieve such an instantaneous increase in pressure. Therefore, the controller 300 can adjust the torque feedback to indicate the discrepancy between the measured operating parameter and the adjusted set point parameter. [00160] Referring to Figure 8 there is shown a flowchart representing a method of providing haptic feedback to a user of a kitchen appliance including the rotational user interface device of Figure 1A or 2A. [00161] At step 810, the method 800 includes detecting, by the one or more controllers, angular displacement of the rotatable user interface device over a period of time in response to user-applied torque to provide user input to the kitchen appliance. [00162] At step 820, the method 800 includes determining, based on the angular displacement over the period of time, an angular acceleration of the rotatable user interface device. [00163] At step 830, the method includes determining, based on the angular acceleration, a magnitude of a counter torque to counteract the user-applied torque. [00164] At step 840, the method includes controlling, by the one or more controllers, the drive device to generate the counter torque to provide haptic user feedback. [00165] Advantageously, the method 800 provides a haptic feedback effect of interacting with a flywheel when interacting with the dial. In particular, initial rotation of the rotational user interface device results in substantial counter torque. Once acceleration has increased, the counter torque decreases, thus requiring less user- applied torque to continue rotation of the dial. Thus, the method 800 can have useful applications for scrolling lists of items or the like, where the user may wish to scroll through a large number of items, such as a screen carousel, without continuously applying significant torque to the dial. [00166] In a preferable form, the counter torque is inversely proportional to the acceleration. For example, when the dial is initially moved from a stationary position to begin rotation, the acceleration is low, and thus a high counter torque is exerted by the drive device 120. As the acceleration increases, the one or more controllers decrease the counter torque. [00167] Similarly to other examples, detecting the rotational displacement of the rotatable user interface device is based on an encoder signal received by the one or more controllers. The encoder can be a magnetic encoder configured to sense a magnetic field generated by a magnet associated with the drive device. In certain embodiments, detecting the angular displacement of the rotatable user interface device is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions. [00168] Referring to Figure 9, there is shown an isometric view of an example of the kitchen appliance 900 provided in the form of a coffee bean grinding apparatus 900. Details in relation to the coffee bean grinding apparatus 900 are disclosed in PCT/AU2011/000274, the contents of which is herein incorporated by reference in its entirety. The coffee bean grinding apparatus 900is an electrical, motorised coffee grinder which comprises a housing 30 provided in the form of a base which houses a grinder mechanism. A base is releasably coupled to the hopper 20 via the collar 5. The base 30 has a recess or discharge area 912 into which ground coffee is dispensed. The discharge area 912 can accommodate containers such as a portafilter, filter or storage canister. The base 30 has a head 913 located above the recess 912. A front panel or surface 914 of the head 913 features various user controls including (as will be further explained) a discharge amount adjustment rotating knob 915, a push button or one or more other user controls for choosing discreet preset discharge amounts 916, a start/cancel button 917 and a grind size selector dial 990. [00169] The grind size selector dial 990 is embodied as the haptic feedback assembly 100 discussed above in relation to Figures 1A or 1B which performs the method of Figures 4 and 5. The user can interact with the grind size selector dial 990, wherein the controller 300 is configured to electro-mechanically control the vertical movement of an upper burr of the grinder mechanism based on user interaction with the dial 990. The spacing between the upper burr and a lower burr determines the grind size. In response to actuation of the dial 990 by the user, the controller 300 is configured to simulate one or more mechanical detents via haptic feedback output by the dial 990 to indicate to the user that the grind size has been incrementally increased or decreased. [00170] If the user experiences the progression of the dial past a plurality of simulated detent positions in response to incrementally decreasing the grind size, the magnitude of the counter torque feedback to counteract the user and supplemental torque feedback to supplement the user-applied torque incrementally increases with progression of the dial to each simulated detent position. This increase in the counter and supplemental torque feedback is analogous the tightening of a tap which restricts the flow of fluid, which appropriately is relevant to decreasing the grind size which reduces the flow of water through the ground coffee beans. [00171] On the other hand, if the user experiences the progression of the dial past a plurality of simulated detent positions in response to incrementally increasing the grind size, the magnitude of the counter torque and supplemental torque feedback to decreases with progression to each simulated detent position. This counteractive torque feedback is analogous to the opening of a tap which increases the flow of fluid, which appropriately is relevant to increasing the grind size which increases the flow of water through the ground coffee beans. [00172] In response to user actuation of the dial 990, a graphical user interface can be presented on the display 330 showing the current grind size and the deviated grind size parameter which the dial 110 has been rotated to represent. Once the user has actuated the dial 990 sufficiently to adjust the grind size, the user can then press the dial 990 inwardly relative to the base 30 to confirm the user’s selection of the grind size. The controller 300 can store in memory 310 the updated operating parameter. [00173] The preset amount button 916 allows the user to choose an amount of coffee grinds to discharge. However, this can alternatively be achieved via depressing the dial 110 of the haptic feedback assembly 100. Depressing the preset amount button 916 or dial 110 causes a numeric display 330 portion to change in discrete increments. Each displayed numeric value represents a grinding time for each grind type. Parameters such as grinding time and grinding type are related to the discharge amount in accordance with a look up table stored in the memory 310 associated with the controller 300 of the appliance 700. A rear surface of the recess 912 also has an external button 919 coupled to an electrical switch that is activated with the presence of a portafilter. [00174] As shown in Figure 10, an espresso coffee making machine 1000 may incorporate an integral coffee grinder 900 with hopper 20 and tamping augur 1002 for filling a portafilter 1004 engaged with a fill head 1006. The fill head 1006 receives ground coffee from the grinder 900 and discharges it into the portafilter 1004. The fill head 1006 also contains and orients the rotating tamping augur 1006. The operation of both the grinder 900 and augur 1002 can be controlled by manipulating the portafilter 1004 that is in engagement with the fill head 1006. As shown in Figure 10, one or more dials are provided on a user interface to allow the user to rotatably actuate in order to adjust one or more operation parameters of the espresso machine. For example, a first dial 1020 may be provided to allow the grind size of the grinder mechanism to be adjusted, and a second dial may be provided to allow the flow rate or the pressure to be adjusted during the process of pulling an espresso shot. Further details regarding the espresso coffee making machine are disclosed by PCT/AU2014/000378 and PCT/AU2014/000378, the contents of which are herein incorporated by reference in their entirety. [00175] More specifically, when the user interacts with input devices of the espresso coffee making machine 1000 to prepare espresso coffee, the controller 300 controls a pump device to pump heated water through the portafilter. More specifically, the controller 300 controls the pump device according to an operating parameter data indicative of a pressure profile and/or a flow rate profile. In relation to the pressure profile, the pressure rate profile includes a pressure set point parameter indicative of the pressure exerted on the coffee grinds in the portafilter over time. In relation to the flow rate pressure profile, the flow rate profile includes a flow rate set point parameter indicative of the flow of water through the coffee grinds inside the portafilter over time. During the preparation of the espresso coffee, the controller 300 controls rotatable actuation of the rotatable user interface device 1020 (i.e. a dial) of the kitchen appliance 1000 to indicate a current set point in time (e.g., the pressure or the flow rate). It will be appreciated that the set point parameter can change over time, thus the controller 300 controls actuation of the drive device 120 operatively coupled to the rotatable user interface device 1020 to adjust the angular position thereof over time. If the user wishes to adjust the operation parameter during the preparation of the consumable, the user can rotationally actuate the rotatable user interface device 110 to indicate the deviation in the consumable preparation by adjusting the operation parameter. As the user attempts to rotate the rotatable user interface device 110 further from the angular position representing the set point parameter, the controller 300 increases the torque feedback generated by the drive device 120. The controller 300 adjusts the operation of the kitchen appliance 1000 (e.g., adjusts flow rate or pressure rate) in response to the deviation. If the user withdraws external actuation of the rotatable user interface device 110 whilst the consumable is still being prepared, the controller 300 controls the drive device 120 to rotatably actuate the rotatable user interface device 1020 to an angular position corresponding to the set point parameter of the respective profile. The pressure profile and/or flow rate profile can be presented via a display of the espresso coffee making machine 1000. It will be appreciated that different profiles can be obtained, presented and utilised depending upon the recipe or process selected by the user. As shown in Figure 11 which shows a system, in one form the profile being used can be obtained from a remote processing system 1110, such as a cloud server, or from a remote device such as a user device 1130 which scans machine readable indicia such as a QR code 1150 provided on a packaging 1140 for ingredients (bag of coffee beans) of the consumable. The kitchen appliance 900, 1000 receives profile data from the user device and/or remote processing system 1110 via a network 1120 such as the internet and/or a local wireless network. [00176] As discussed above, the described method and assembly has applications in a wide variety of kitchen appliances where there is a limitation on the available space that can be used for the user interface. In one form, the technology can be used for a coffee tamp lever of the espresso coffee machine. In another form, the technology can be used in a food processor or stick mixer, wherein the change in rotations per minute (rpm) or resistance for these appliances can also be translated back into angular displacement of the dial 110. Again, for food processors, the user can turn the dial 110, and a similar rotation is actuated at the blade side, through the main motor 120, thereby giving the user complete control over the chopping operation cycle. A dial 110 of a kitchen appliance used for scrolling a menu in a carousel mode can also benefit of this technology as the dial 110 can auto-rotate. This technology also has applications for ovens, microwaves and other appliances with timers, where the dial 110 can move according to a temporal operating parameter and be adjusted by the user via external user interaction. In addition, this technology can be used for kettles, wherein the dial 110 moves as the water heats, In this appliance, the rotation speed can determine the increment size. In appliances with integrated scales, such as food processors and bread makers, the dial 110 can move with the recorded value in a analogous manner to analogue scales. [00177] Whilst examples have been described where either the drive device or another haptic feedback device has been used to provide user feedback to the user, in an alternate embodiment, another un-used component of the kitchen appliance can be used to provide physical feedback. For example, a pump or a steam wand (not currently in use during the operating cycle) of an espresso machine could be actuated by the one or more controllers to provide physical feedback to the user. For example, the pump could be actuated to cause water to flow from an outlet of the kitchen appliance to provide user feedback. Additionally, the one or more controllers can be configured to control the steam wand to emit steam to provide user feedback in response to the user interaction with the dial 100. [00178] The above description of various embodiments of the present invention is provided for purposes of description to one of ordinary skill in the related art. It is not intended to be exhaustive or to limit the invention to a single disclosed embodiment. As mentioned above, numerous alternatives and variations to the present invention will be apparent to those skilled in the art of the above teaching. Accordingly, while some alternative embodiments have been discussed specifically, other embodiments will be apparent or relatively easily developed by those of ordinary skill in the art. The invention is intended to embrace all alternatives, modifications, and variations of the present invention that have been discussed herein, and other embodiments that fall within the spirit and scope of the above-described invention. [00179] In this specification, the terms ‘comprises’, ‘comprising’, ‘includes’, ‘including’, or similar terms are intended to mean a non-exclusive inclusion, such that a method, system, or apparatus that comprises a list of elements does not include those elements solely but may well include other elements not listed. [00180] It should be appreciated that the term connected, when used in the claims, should not be interpreted as being limited to direct connections only. The terms "coupled" and "connected," along with their derivatives, may be used. It should be understood that these terms are not intended as synonyms for each other. Thus, the scope of the expression a device A connected to a device B should not be limited to devices or systems wherein an output of device A is directly connected to an input of device B. It means that there exists a path between an output of A and an input of B which may be a path including other devices or means. "Connected" may mean that two or more elements are either in direct physical contact, or that two or more elements are not in direct contact with each other but yet still co-operate or interact with each other, unless otherwise specified. [00181] The reference in this specification to any known matter or any prior publication is not, and should not be taken to be, an acknowledgment or admission or suggestion that the known matter or prior art publication forms part of the common general knowledge in the field to which this specification relates. [00182] While specific examples of the invention have been described, it will be understood that the invention extends to alternative combinations of the features disclosed or evident from the disclosure provided herein. [00183] Many and various modifications will be apparent to those skilled in the art without departing from the scope of the invention disclosed or evident from the disclosure provided herein.

Claims

Claims 1. A method of controlling a kitchen appliance, the kitchen appliance including a rotatable user interface device electrically controllable by one or more controllers, wherein the method comprises: controlling, by the one or more controllers, angular displacement of the rotatable user interface device based on operating parameter data to be used by the kitchen appliance during preparation of a consumable; detecting, by the one or more controllers during the preparation of the consumable, a deviation in the angular position of the rotatable user interface device caused by user interaction; and controlling, by the one or more controllers during the preparation of the consumable, actuation of the rotatable user interface device to generate haptic user feedback based on the deviation in the angular position.

2. The method according to claim 1, wherein the method includes controlling operation of the kitchen appliance based on the deviation in the angular position of the rotatable user interface device.

3. The method according to claim 1 or 2, wherein the operating parameter data is time series data, wherein each point in time of the time series data has associated therewith data indicative of a respective magnitude of an operating parameter of the kitchen appliance.

4. The method according to claim 3, wherein the method includes controlling the actuation of the rotatable user interface device to rotate in a first rotational direction in response to a positive change of magnitude of the operating parameter over time, and in a second direction in response to a negative change of magnitude of the operating parameter over time.

5. The method according to any one of claims 1 to 4, wherein after user intervention, the method includes controlling the rotatable user interface device to correct the angular position in accordance with the operating parameter data.

6. The method according to any one of claims 1 to 5, wherein in response to detecting the deviation in the angular position, the method further includes the one or more controllers modifying at least some of the operating parameter data to at least partially compensate for the deviation.

7. The method according to claim 6, wherein the preparation of the consumable by the kitchen appliance is defined by the operating parameter data to be conducted in a first period of time, and wherein the operating parameter data as modified in response to detecting the user intervention results in the consumable being prepared by the kitchen appliance in a second period of time, wherein the second period of time differs to the first period of time.

8. The method according to any one of claims 1 to 7, wherein detecting the deviation in the angular position is based on an encoder signal received by the one or more controllers.

9. The method according to claim 8, wherein the encoder is a magnetic encoder configured to sense a magnetic field generated by a magnet associated with the rotatable user interface device.

10. The method according to claim 9, wherein detecting the deviation in the angular position is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions.

11. The method according to any one of claims 1 to 10, wherein the method includes determining a magnitude of the haptic user feedback to be generated based at least on a magnitude of the deviation of the angular position.

12. The method according to claim 11, wherein determining the magnitude of the haptic user feedback further includes: obtaining, by the one or more controllers from one or more sensors, real-time data indicative of the kitchen appliance operating to produce the consumable; and determining, by the one or more controllers and based on the operating parameter data and the real-time data, an error, wherein determining, by the one or more controllers, the magnitude of the haptic user feedback is further based on the error.

13. The method according to any one of claims 1 to 12, wherein the rotatable user interface device is a drive device.

14. The method according to claim 13, wherein the drive device is a brushless DC electric motor.

15. The method according to 13 or 14, wherein the haptic feedback is a counter- torque generated by the drive device to counter-torque applied to the rotatable user interface device via the user intervention.

16. The method according to claim 15, wherein controlling the drive device to generate the counter-torque is further based on cogging torque data, wherein the cogging torque data is indicative of a magnitude of cogging torque of the drive device at a plurality of angular positions, wherein the one or more controllers control the drive device to output the counter torque to additionally counteract the cogging torque based on the angular position of the rotational user interface device.

17. The method according to any one of claims 1 to 16, wherein the operating parameter is an operating flow rate over time to produce the beverage.

18. The method according to any one of claims 1 to 16, wherein the operating parameter is an operating temperature over time to produce the beverage.

19. The method according to any one of claims 1 to 16, wherein the beverage is espresso, wherein the operating parameter is one of an operating pressure exerted upon coffee grounds over time or a flow rate of water flowing through the coffee grounds over time to produce the espresso.

20. The method according to claim 1 to 19, wherein the method includes obtaining the operating parameter data, including one of: receiving, via a communication interface, the operating parameter data from a device remote to the kitchen appliance; and retrieving, from memory of the kitchen appliance, the operating parameter data.

21. The method according to any one of claims 1 to 20, wherein the method further includes displaying output information, based on the operating parameter data, via at least one of: a display associated with the kitchen appliance; and a user device remote to the kitchen appliance.

22. The method according to claim 21, wherein the output information is indicative of the user-defined deviation of the magnitude of the operating parameter.

23. The method according to claims 21 or 22, wherein the output information includes at least one of graphical information and textual information.

24. A method of controlling a kitchen appliance, the kitchen appliance including a rotatable user interface device electrically controllable by one or more controllers, wherein the method comprises: detecting, by the one or more controllers, angular displacement of the rotatable user interface device caused by user intervention; and controlling, by the one or more controllers, the rotatable user interface device to generate torque feedback indicative of angular displacement of rotatable user interface device between multiple simulated detent positions to represent one or more incremental changes to a magnitude of an operating parameter of the kitchen appliance.

25. The method according to claim 24, wherein controlling the rotatable user interface device to generate the torque feedback includes generating a counter- torque followed by a supplemental torque relative to the torque feedback during angular displacement between adjacent simulated detent positions.

26. The method according to claim 25, wherein the counter-torque is generated during a first angular range of displacement between adjacent simulated detent positions, and the supplemental torque is generated during a second angular range of displacement between the adjacent simulated detent positions.

27. The method according to claim 26, wherein the counter-torque increases linearly during the angular displacement within the first angular range of displacement.

28. The method according to claim 27, wherein a rate of change of the counter torque generated during the first angular range is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions.

29. The method according to any one of claims 26 to 28, wherein the supplemental torque decreases linearly during the second angular range of displacement.

30. The method according to claim 29, wherein a rate of change of the supplemental torque is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions.

31. The method according to claim 26, wherein the counter-torque increases non- linearly during the angular displacement within the first angular range of displacement.

32. The method according to claim 31, wherein a rate of change of the counter torque generated during the first angular range is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions.

33. The method according to claim 31 or 32, wherein the supplemental torque decreases non-linearly during the angular displacement within the second angular range of displacement.

34. The method according to claim 33, wherein a rate of change of the supplemental torque generated during the second angular range is based on a magnitude of the operating parameter associated with the adjacent simulated detent positions.

35. The method according to any one of claims 24 to 34, wherein detecting the rotational displacement of the rotatable user interface device is based on an encoder signal received by the one or more controllers.

36. The method according to claim 35, wherein the encoder is a magnetic encoder configured to sense a magnetic field generated by a magnet associated with the rotatable user interface device.

37. The method according to claim 36, wherein detecting the angular displacement of the rotatable user interface device is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions.

38. The method according to any one of claims 24 to 37, wherein the method includes: modifying, by the one or more controllers, the magnitude of the operating parameter based on the angular displacement between the multiple simulated detent positions; and controlling, by the one or more controllers, the kitchen appliance using the operating parameter, as modified, to prepare the consumable.

39. The method according to claim 38, wherein the method includes receiving, by the one or more controllers, a confirmation signal from a switch actuated by the user, wherein the magnitude of the operating parameter is modified in response to receiving the confirmation signal.

40. The method according to claim 38 when dependent upon claim 35, wherein the method includes receiving, by the one or more controllers, a confirmation signal from the magnetic encoder in response to user displacement of the encoder toward or away from the magnet, wherein the magnitude of the operating parameter is modified in response to receiving the confirmation signal.

41. A method of controlling a kitchen appliance, the kitchen appliance including a rotatable user interface device electrically controllable by one or more controllers in electrical communication therewith, wherein the method comprises: detecting, by the one or more controllers, angular displacement of the rotatable user interface device over a period of time in response to torque caused by user intervention to provide user input to the kitchen appliance; determining, based on the angular displacement over the period of time, an angular acceleration of the rotatable user interface device; determining, based on the angular acceleration, a magnitude of a counter torque to counteract the user-applied torque; and controlling, by the one or more controllers, the rotatable user interface device to generate the counter torque to provide haptic user feedback.

42. The method according to claim 41, wherein the counter torque is inversely proportional to the acceleration.

43. The method according to claim 41 or 42, wherein detecting the rotational displacement of the rotatable user interface device is based on an encoder signal received by the one or more controllers.

44. The method according to claim 43, wherein the encoder is a magnetic encoder configured to sense a magnetic field generated by a magnet associated with the rotatable user interface device.

45. The method according to claim 44, wherein detecting the angular displacement of the rotatable user interface device is further based on mapping data indicative of a magnetic field strength able to be sensed by the encoder for a plurality of angular positions.

46. The method according to any one of claims 41 to 45, wherein the rotatable user interface device includes a dial coupled to a motor supported by a support member which is coupled to a mounting member for mounting the rotatable user interface device to the kitchen appliance, wherein the rotatable user interface device includes a sensor to sense axial movement of the dial and motor relative to the mounting member in response to an axial force applied by the user to the dial to cause the support member to resiliently flex, wherein the method includes controlling the kitchen appliance in response to receiving, by the controller, a sensor signal from the sensor indicative of the axial movement.

47. The method according to claim 1, wherein the rotatable user interface device includes a dial coupled to a drive device supported by a support member which is coupled to a mounting member for mounting the rotatable user interface device to the kitchen appliance, wherein the rotatable user interface device includes a sensor to sense axial movement of the dial and motor relative to the mounting member in response to an axial force applied by the user to the dial to cause the support member to resiliently flex, wherein the method includes performing the method in response to receiving, by the controller, a sensor signal from the sensor indicative of the axial movement.

48. The method according to claim 24, wherein the rotatable user interface device includes a dial coupled to a motor supported by a support member which is coupled to a mounting member for mounting the rotatable user interface device to the kitchen appliance, wherein the rotatable user interface device includes a sensor to sense axial movement of the dial and motor relative to the mounting member in response to an axial force applied by the user to the dial to cause the support member to resiliently flex, wherein the method includes controlling the kitchen appliance to prepare the beverage or food in response to receiving, by the controller, a sensor signal from the sensor indicative of the axial movement.

49. A kitchen appliance, comprising: a rotatable user interface device; and one or more controllers, electrically coupled to the rotatable user interface device and configured to perform a method according to any one of claims 1 to 23 or 47.

50. A kitchen appliance, comprising: a rotatable user interface device; and one or more controllers, electrically coupled to the rotatable user interface device and configured to perform a method according to any one of claims 24 to 40 or 48.

51. A kitchen appliance, comprising: a rotatable user interface device; and one or more controllers, electrically coupled to the rotatable user interface device, configured to perform a method according to any one of claims 41 to 46.

52. A kitchen appliance, comprising: a rotatable user interface device; and a one or more controllers, electrically coupled to the rotatable user interface device, configured to selectively operate in multiple modes, wherein the multiple includes at least two of: a first mode, wherein the one or more controllers are configured to perform a method according to any one of claims 1 to 23 or 47; a second mode, wherein the one or more controllers are configured to perform a method according to any one of claims 24 to 40 or 48; and a third mode, wherein the one or more controllers are configured to perform a method according to any one of claims 41 to 46.