#The 7th Lichuang Electric Competition#Current and voltage table

 
 
* 1. Project function introduction
Based on the N32G430C8L7 ammeter, there is no fast charge deception function, it should be OK, there are still many empty pins, looking at other people's solutions, many of them also use DAC to generate voltage to deceive.
 
*2. Project attributes
are based on the official routine project of the Lichuang Training Summer Camp
 
 
 
* 3. Open source agreement
GPL 3.0
 
 
 
*4. Hardware part
The classic AMS1117-3.3 buck module is used as the power supply of the MCU.
The voltage is obtained by sampling the voltage on the back of the 10kO after the 91kOhm and 10kOhm resistors in series through the ADC.
The current is sampled by INA199 at both ends of the sampling resistor
. The screen is 0.91 IIC OLED.
It was the first time to solder the LQPF packaged chip. I was too confident and didn't use soldering oil to solder one.
 
 
 
*5. The software part
is based on the official open source project routine of LiChuang.
**** The external crystal oscillator needs to change the 66th line of system_n32g403.c from 128000000 to 8000000. It seems that the frequency is too high and the software iic can't work.
st-link can burn.
 
 
*6. The BOM list
is all ordered from LiChuang Mall.
*7. The competition LOGO verification
was covered, and I didn't think about it when drawing the PCB
 
* 8. Demonstrate your project and record it as a video. Upload
 
the video attachment