CN216486241U

CN216486241U - Raspberry pie expansion board

Info

Publication number: CN216486241U
Application number: CN202123399464.9U
Authority: CN
Inventors: 朱树华; 覃新; 阳征飞; 杨冬英
Original assignee: Yunnan Geya Times Information Technology Co ltd
Current assignee: Yunnan Geya Times Information Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-10
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a raspberry group expansion board, which comprises a DS1307 real-time clock chip, a farad capacitor, an MCP2515 chip, an A1050/C chip, an SP485EE chip, an LM2596S voltage regulator and an AMS1117 voltage regulator; the LM2596S voltage regulator is respectively and electrically connected with the SP485EE chip, the DS1307 real-time clock chip and the pull capacitor; the AMS1117 voltage stabilizer is electrically connected with the A1050/C chip; the farad capacitor is electrically connected with the DS1307 real-time clock chip; the MCP2515 chip is electrically connected with the A1050/C chip; the LM2596S voltage regulator is provided with a raspberry pi 5V input end; the MCP2515 chip is provided with a raspberry pi (serial peripheral interface) SPI (serial peripheral interface); the SP485EE chip is provided with a raspberry USART interface; the DS1307 real-time clock chip is provided with a raspberry pi 2C interface. The utility model discloses integrate multiple function module, reduce external hardware's use, it is with low costs.

Description

Raspberry pie expansion board

Technical Field

The utility model relates to an expansion board technical field, in particular to raspberry group expansion board.

Background

Raspberry Pi (the chinese name is "Raspberry Pi", abbreviated as RPi, (or RasPi/RPi) is designed for learning computer programming education), which is only a credit card sized microcomputer, and the system thereof is based on Linux.

Since the advent, audience members were reluctant to hunt for many empowerments and pioneers, once a "pie". The appearance is delicate, the inner core is strong, the functions of video, audio and the like are universal, and the peacock is small in size and complete in five zang organs.

Just like any other desktop or portable computer running a Linux system, there are many things that can be done with a Raspberry Pi. Of course, a little difference is inevitable. The ordinary computer mainboard depends on a hard disk to store data, but in terms of the Raspberry Pi, an SD card is used as a "hard disk", and you can also connect with an external USB hard disk. By using Raspberry Pi, Office documents can be edited, web pages can be browsed, and games can be played, such as the hammer of Thanksgiving (Quake).

The low price of Raspberry Pi means that it is more versatile and it is a good choice to make it an excellent multimedia center. The video can be played by using the Raspberry Pi, and even the power can be supplied through the USB interface of the television.

SUMMERY OF THE UTILITY MODEL

Many and with high costs problems of external hardware to the existence of current raspberry group expansion board, the utility model provides a raspberry group expansion board.

In order to solve the technical problem, the utility model discloses a technical scheme does:

a raspberry pi expansion board comprises a DS1307 real-time clock chip, a farad capacitor, an MCP2515 chip, an A1050/C chip, an SP485EE chip, an LM2596S voltage regulator and an AMS1117 voltage regulator; the LM2596S voltage regulator is respectively and electrically connected with the SP485EE chip, the DS1307 real-time clock chip and the farad capacitor; the AMS1117 voltage stabilizer is electrically connected with the A1050/C chip; the farad capacitor is electrically connected with the DS1307 real-time clock chip; the MCP2515 chip is electrically connected with the A1050/C chip; the LM2596S voltage regulator is provided with a raspberry pi 5V input end; the MCP2515 chip is provided with a raspberry pi interface; the SP485EE chip is provided with a raspberry USART interface; the DS1307 real-time clock chip is provided with a raspberry pi 2C interface.

Preferably, the input end of the LM2596S voltage regulator is a 2Pin terminal.

Preferably, the output end of the A1050/C chip is a 3Pin terminal.

Preferably, the output end of the SP485EE chip is a 3Pin terminal.

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

the utility model relates to a special expansion board for a raspberry group 3B/3B +, which realizes the normal operation after power failure by using a clock chip and a farad capacitor; the CAN bus function is expanded; meanwhile, the expansion board has a 485 bus function and can communicate with other 485 equipment; the external 12V power supply can be directly used for supplying power to the expansion board, and the power is supplied to the raspberry group for use after being converted.

Drawings

Fig. 1 is a schematic diagram of the raspberry group expansion board of the present invention.

In the figure, a 1-MCP2515 chip; 2-A1050/C chip; 3-SP485EE chip; 4-DS1307 real-time clock chip; 5-farad capacitance; 6-LM2596S voltage regulator; 7-AMS1117 potentiostat; 8-raspberry pi 5V input; 9-raspberry pi SPI interface; 10-raspberry pie USART interface; 11-raspberry pi I2C interface; a 12-2Pin terminal; 13-a first 3Pin terminal; 14-second 3Pin terminal.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, a raspberry pi expansion board includes a DS1307 real-time clock chip 4, a farad capacitor 5, an MCP2515 chip 1, an a1050/C chip 2, an SP485EE chip 3, an LM2596S voltage regulator 6, and an AMS1117 voltage regulator 7; the LM2596S voltage regulator 6 is electrically connected with the SP485EE chip 3, the DS1307 real-time clock chip 4 and the farad capacitor 5 respectively; the AMS1117 voltage stabilizer 7 is electrically connected with the A1050/C chip 2; the farad capacitor 5 is electrically connected with the DS1307 real-time clock chip 4; the MCP2515 chip 1 is electrically connected with the A1050/C chip 2; the LM2596S voltage regulator 6 is provided with a raspberry pi 5V input terminal 8; the MCP2515 chip 1 is provided with a raspberry type SPI interface 9; the SP485EE chip 3 is provided with a raspberry Pi USART interface 10; the DS1307 real time clock chip 4 is provided with a raspberry pi 2C interface 11. The input of the LM2596S voltage regulator 6 is the 2Pin terminal 12. The output of the a1050/C chip 2 is the 3Pin terminal, i.e., the first 3Pin terminal 13. The output of the SP485EE chip is the 3Pin terminal, i.e., the second 3Pin terminal 14.

In the embodiment, the raspberry pi expansion board is a special expansion board for the raspberry pi 3B/3B +, a DS1307 real-time clock chip 4 and a farad capacitor 5 of 0.22F are integrated on the board, and the expansion board can be used for real-time and normal operation of time after power failure; the CAN controller MCP2515 chip 1 and the A1050/C chip 2 are integrated, and the CAN bus function is expanded; meanwhile, an SP485EE chip 3 is integrated, so that the expansion board has a 485 bus function and can communicate with other 485 equipment; the power supply part uses a chip which is converted from 12V to 5V, an external 12V power supply can be directly used for supplying power to the expansion board, and the power is supplied to the raspberry group for use after conversion. The equipment has 3 external terminals, and the power input port uses 2 interfaces, CAN and 485 ports.

In one embodiment, three circuit boards are grouped into one board, and the three circuit boards are respectively: the snowy raspberry type 4 generation 3b + expansion board RS485 SPI CAN bus module UART communication module, the LM2596HVS-ADJ LM2596S high-power DC-DC adjustable voltage reduction and voltage stabilization power supply module with digital display, and the DS1307 clock 24C32 memory with/without battery Tiny RTC I2C module.

In the embodiment, after three circuit boards are integrated, the circuit boards are inserted into a raspberry pi 3B + mainboard, so that 1 CAN bus and 1 485 bus CAN be expanded, and the circuit boards have a power-off and time-running function, namely, when equipment is powered on next time after being powered off, time is taken out from a clock chip of a module and still is the current real-time; the expansion board is supplied power by 12V power adapter, has converted 1 way 5V simultaneously and has given the raspberry group, and the raspberry group need not external power supply again, has expanded more functions for the raspberry group.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A raspberry pi expansion board, its characterized in that: the system comprises a DS1307 real-time clock chip, a farad capacitor, an MCP2515 chip, an A1050/C chip, an SP485EE chip, an LM2596S voltage regulator and an AMS1117 voltage regulator; the LM2596S voltage regulator is respectively and electrically connected with the SP485EE chip, the DS1307 real-time clock chip and the farad capacitor; the AMS1117 voltage stabilizer is electrically connected with the A1050/C chip; the farad capacitor is electrically connected with the DS1307 real-time clock chip; the MCP2515 chip is electrically connected with the A1050/C chip; the LM2596S voltage regulator is provided with a raspberry pi 5V input end; the MCP2515 chip is provided with a raspberry pi interface; the SP485EE chip is provided with a raspberry Pi USART interface; the DS1307 real-time clock chip is provided with a raspberry pi 2C interface.

2. A raspberry pi expansion board as claimed in claim 1, wherein: the input terminal of the LM2596S voltage regulator is a 2Pin terminal.

3. A raspberry pi expansion board as claimed in claim 1, wherein: the output end of the A1050/C chip is a 3Pin terminal.

4. A raspberry pi expansion board as claimed in claim 1, wherein: the output end of the SP485EE chip is a 3Pin terminal.