THE HYDRABUS DIARIES

An USB isolator will help eliminate ground loops and cuts down electromagnetic interference (EMI) in between the pc and the linked device.1x GND 3V3 (P2 with 2 pins two.54mm) connector can be employed to energy externally the WCH CH569 MCU (it is suggested to remove the P4/SHUNT in that situation It's not necessarily mandatory since the 3V3 LDO IC1