ART-Pi based expansion board

design background

Since I want to work on a host computer at home during the winter vacation, this extended version only makes some common communication modules, and I also want to deepen my understanding of several communication methods.

Schematic introduction

There are several interfaces that cannot be used, so I only use some commonly used ones.

USB to serial port:

I brought a development board home during the winter vacation and found that I couldn't communicate with the computer using the serial port. It happened that there was an extended version event this time, so I arranged it.

2.4-inch LCD interface (only 2.4-inch at home)

Temperature and humidity sensor:

The idea of ​​this module is that I want to use this module to see how cold it is at home (because it’s too cold to draw on the board every day)

5V and 3.3V power supplies:

Maybe it can be used as a power supply someday.

IIC reads EEPROM:

I haven’t used IIC yet and would like to get familiar with it.

WIFI:

I saw others using this module before, and it happened to be extended with an SPI interface. I wanted to try it.

Telecommunication:

I have never been exposed to this area before, so I really want to try it. After all, I have an Internet connection.