Hi, I really like your undertaking and I do think I have techniques that will help you. Your software has been submitted. 1x GND 3V3 (P2 with two pins 2.54mm) connector may be used to electrical power externally the WCH CH569 MCU (it is usually recommended to remove the P4/SHUNT https://hydrabus40628.luwebs.com/33822432/examine-this-report-on-hydrabus