[Internet of Things] Chuanzhi Hongmeng Development Board-402304A

1: This project consists of two PCB boards:

1. Chuanzhi Education Hi3861 core development board;

2. Expansion board compatible with standard E53 expansion; (The E53 expansion board used this time was not redesigned, and an expansion board designed in the previous training camp was reused;)

2: Circuit design:

This circuit design is relatively simple;

The 5V to 3.3V circuit uses XC6210B332MR, with an output current up to 900MA;

The serial port chip uses the CH340E with a smaller package, which is powerful and saves PCB space;

There are two key circuits, one is the RESET circuit of the development board, and the other is connected to GPIO14 for user buttons, which is triggered by low level;

There are two indicator light circuits, one is the power indicator light and the other is the user control indicator light. It is connected to GPIO02 and lights up at high level;

Three: PCB physical appreciation:

Beautiful pictures after welding:

Install the steering gear controlled by this actual combat camp:

After connecting the battery, startup and debugging went smoothly:

I dug out a previously designed E53 expansion board that is pressed into the bottom of the box; it integrates SHT30 temperature and humidity, BH1750 light intensity, PIR infrared human body sensor, and an RGB color light;

In the future, I will rely on this set of equipment for Hongmeng development! !

Dzogchen photo: