CN212933911U

CN212933911U - Learning experiment board of internet of things based on Esp8266

Info

Publication number: CN212933911U
Application number: CN202022060807.8U
Authority: CN
Inventors: 罗清波
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-04-09
Anticipated expiration: 2030-09-19

Abstract

The utility model relates to an thing networking study experiment board based on ESP8266, including the experiment board body, the experiment board body has a front and a reverse side, and the front of experiment board body is equipped with ESP8266 thing networking chip, OLED display screen, Micro USB interface, serial port communication chip, power chip, temperature and humidity sensor, three-colour LED lamp, a switch, two trigger button and a plurality of pad; the back of the experiment board body is provided with a plurality of resistors and a plurality of welding pads. The utility model discloses fix the side at the experiment board with thing networking chip, for guaranteeing that the chip can high-efficient work, specially done the breach with PCB below the chip WIFI antenna part and handled, the OLED display screen is fixed in the experiment board positive side top. The experiment board has compact size, and onboard functions are simplified and practical, so that the development of learning the Internet of things is more convenient.

Description

Learning experiment board of internet of things based on Esp8266

Technical Field

The utility model relates to a thing networking development board technical field specifically is a thing networking study experiment board of integrated wiFi chip and OLED display screen.

Background

At present, current thing networking development experiment board all is single ESP8266 chip and USB power integration scheme, only provides partial pin, can't look over some important information in real time in development engineering in reality, for example look over three-colour LED state, the data of some sensors are like temperature sensor or humidity transducer, all must connect the computer and print through the serial ports and look over or connect WIFI to look over through cell-phone App, this is more loaded down with trivial details at the debugging in-process, need call serial ports repeatedly and print software or cell-phone APP software.

In view of this, the utility model provides an integrated Esp8266 chip and OLED display screen's thing networking study experiment board is the subject that the utility model discloses will study.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides an internet of things learning experiment board based on ESP8266, which comprises an experiment board body, wherein the experiment board body is provided with a front surface and a back surface, and the front surface of the experiment board body is provided with an ESP8266 internet of things chip, an OLED display screen, a Micro USB interface, a serial port communication chip, a power chip, a temperature and humidity sensor, a three-color LED lamp, a power switch, two trigger keys and a plurality of bonding pads; the back of the experiment board body is provided with a plurality of resistors and a plurality of welding pads.

Further, the chip of the internet of things is Esp-12F manufactured by Anxingao corporation.

Furthermore, the front surface of the experiment board body is also provided with a RESET restart key which is arranged beside the experiment board.

Furthermore, the front of the experiment board body is also provided with a BOOT key, and the key is arranged at the side of the experiment board.

Further, the front of laboratory panel body still is equipped with DHT11 temperature and humidity sensor, and this sensor is arranged at the side of thing networking chip.

Further, the front of experiment board body still is equipped with RGB three-colour LED, and this LED arranges the side at the experiment board.

Furthermore, the front of the experiment board body is also provided with an OLED liquid crystal screen, and an interface circuit of the liquid crystal screen is arranged beside the chip of the Internet of things.

Furthermore, the power supply chip is a 5V to 3.3V power supply chip, and the power supply chip reduces the 5V voltage introduced by the USB to 3.3V, so as to supply power to the control chip and the OLED display screen simultaneously.

Furthermore, the front surface of the experiment board body is also provided with a power switch, a hardware programming circuit and a software restarting circuit.

Furthermore, two rows of IO pin bonding pads commonly used by the chip of the internet of things are arranged, and the two rows of bonding pads are respectively arranged in the areas on two sides of the chip of the internet of things.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. important data required in the actual development process can be displayed on the OLED display screen in real time, for example, the state that wireless Wifi is connected with a route is displayed, or data of a sensor is displayed on the OLED display screen in real time and uploaded to the cloud, or real-time network time is displayed, and the three-color LED can simulate and display spectrums with different colors, so that the development pleasure is increased;

2. the front surface of the experiment board of the invention reserves the core chip of the Internet of things, the OLED display screen and the related keys, and the size of the experiment board is minimized;

3. the number and the positions of the bonding pads are fixed, and the most commonly used IO pins are placed on two sides of the chip of the Internet of things, namely 8 bonding pads on the left side and 10 bonding pads on the right side;

4. a gap is specially reserved on the PCB of the experimental board, and the design is used for protecting radio frequency signals of the chip of the Internet of things from interference.

To sum up, the utility model discloses ESP8266 thing networking study experiment board increases OLED in the front of experiment board and shows, has reserved IO pin pad moreover, has satisfied the demand of user extension exercise. The experimental board has the advantages of low cost, complete functions, reasonable design of components, compact layout and small size. The experimental board makes up for some use deficiencies of the ESP8266 small-sized experimental board on the market at present, and provides a better and more suitable Internet of things entry development small tool for beginners.

The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.

Drawings

FIG. 1 is a schematic circuit diagram of a main chip of an embodiment of the experimental board.

FIG. 2 is a schematic circuit diagram of a partial circuit of an OLED display panel according to an embodiment.

Fig. 3 is a partial circuit schematic diagram of a power supply chip of an embodiment.

Fig. 4 is a schematic diagram of a partial circuit of the USB to serial port according to the embodiment.

Fig. 5 is a partial circuit schematic diagram of a RESET restart key of an embodiment.

Fig. 6 is a partial circuit schematic diagram of the DHT11 temperature and humidity sensor according to the embodiment.

Fig. 7 is a partial circuit diagram of a three-color LED according to an embodiment.

FIG. 8 is a schematic diagram of a partial BOOT key circuit of an embodiment.

FIG. 9 is a partial circuit schematic diagram of an LED of an embodiment.

FIG. 10 is a partial circuit diagram of an IO interface according to an embodiment.

FIG. 11 is a partial circuit schematic of an OLED interface of an embodiment.

Detailed Description

The invention will be further described with reference to the following examples.

The embodiment is an Esp 8266-based internet of things development experiment board, which is used for internet of things lovers to learn and develop internet of things products, as shown in fig. 1 to 11, wherein fig. 1 is a main chip general circuit of the experiment board, and an ESP-12F chip is used to realize a core function of internet of things development, fig. 2 is an OLED liquid crystal display driving circuit to realize online debugging of internet of things parameters, fig. 3 is a power module general circuit to realize conversion between 5V and 3.3V voltages, and on/off of a power supply can be realized through a key switch, fig. 4 is a USB-to-serial port general circuit to realize serial port debugging and programming of a program, fig. 5 is a hardware restart general circuit, fig. 6 is a temperature and humidity sensor general circuit, fig. 7 is a three-color LED light emitting diode general circuit, fig. 8 is a main chip BOOT selection general circuit to realize a switching function between program operation and program burning, fig. 9 is an LED light, fig. 10 is a general output circuit of a general IO interface of a main chip, and fig. 11 is an interface circuit of an OLED and the main chip.

As shown in FIG. 3, the power module circuit comprises a chip with model number AMS1117-3.3, a USB socket, a key switch and a power LED indicator light.

As shown in FIG. 1, the 15 th pin of the core chip P6 is connected to the 2 nd pin of the communication interface CH340, and the 16 th pin of the chip P6 is connected to the 3 rd pin of the communication interface CH 340.

The embodiment is an internet of things development experiment board based on ESP8266, because the ESP8266 internet of things chip is used as a core programming chip, the cost is low, the functions are complete, an expansion interface is reserved around the core chip, more expansion modules can be connected into the experiment board, and the experiment content is enriched.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to describe the present invention

With the limitation of the scope of the invention, although the invention has been described in detail with reference to preferred embodiments, it is common in the art to practice the invention

It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention

The essence and scope of the technical scheme of the utility model.

Claims

1. An ESP 8266-based Internet of things learning experiment board is characterized in that an experiment board body is provided with a front surface and a back surface, and an ESP8266 Internet of things chip, an OLED display screen, a Micro USB interface, a serial port communication chip, a power chip, a temperature and humidity sensor, a three-color LED lamp, a power switch, two trigger keys and a plurality of bonding pads are arranged on the front surface of the experiment board body; the back of the experiment board body is provided with a plurality of resistors and a plurality of welding pads.

2. The ESP 8266-based Internet of things learning experiment board as claimed in claim 1, wherein the Internet of things chip is a wireless WiFi chip.

3. The learning experiment board of the internet of things based on the ESP8266 as claimed in claim 1, wherein the main control chip of the Esp8266 minimum system is ESP-12F manufactured by anxingao corporation.

4. The ESP 8266-based learning and experiment board of the internet of things according to claim 1, wherein the power chip is a 5V to 3.3V power chip, and the power chip reduces the voltage of 5V introduced by USB to 3.3V, so as to supply power to the main control chip and the OLED display screen at the same time.