【ART-Pi】Expansion board design

This expansion board is equipped with a wealth of commonly used module interfaces, which is suitable for beginners who have already started to further improve their driver writing and data acquisition and processing capabilities for peripherals. The main modules are as follows:

OLED screen : The model is QG-2864KLBLG01, with a total of 128*64 pixels and a size of 1.3 inches. It uses the onboard SPI4 driver.
9-axis attitude sensor : Model BMX055, driven by IIC, set acceleration, gyroscope, and magnetic field data as the default storage address.
SIM card communication module : Uses SIM800L_GPRS adapter board to connect to USTR2 communication. The audio output port of the adapter board is connected to the power amplifier module. It is equipped with an onboard antenna. You can also use the IPEX interface of the module's own antenna.
HUB75 interface : used for external advertising dot matrix screen, can provide up to 3 primary colors and 32 lines of scanning.
CH340 serial communication module : typec interface plug-in, connected to USART1 host computer communication.
WS2812 running water lamp : unipolar return-to-zero code transmits data, driven by PWM, and can display spectrum rhythm in conjunction with audio;
audio input : equipped with an audio input frequency and input amplitude adjustment circuit, which can be made into a single-ended or differential input by adjusting the capacitance and resistance. , adjust the audio gain and frequency according to your own needs.
Audio decoding circuit : model ES7144S, collects 3.5mm audio port audio and decodes it;
power amplifier circuit : model NS4165, you can set up a class AB or class D power amplifier by yourself.

Infrared receiver : model HS0038B3VM

Temperature sensor : Model DS13B20