Article directory
Read voltage data
The second digit is converted to decimal d5 (hexadecimal) = 213 (decimal)
The main control chip sometimes does not work
Use AC-DC power supply to power the chip, the chip will not work sometimes, directly use DC power supply 3.3V to supply power, the chip can work
最终控制板GND通过二极管接到金属壳上，使用AC-DC电源为芯片供电，芯片可以正常工作。