Hi there, I really like your job and I think I've skills that may help you. Your application has become submitted. 1x GND 3V3 (P2 with two pins 2.54mm) connector can be utilized to electric power externally the WCH CH569 MCU (it is recommended to get rid of the P4/SHUNT in that circumstance It isn't obligatory given that the 3V3 LDO IC1 is secur