Some time ago I bought five USB<->UART dongles based on a CP2102 chip,
I tested them and they seemed to work,
but recently they stopped working with my Imax B6 clone charger (atmega32 vesion)
I'm not sure why, maybe I did something in the firmware but I can't figure out what,
fortunately there is a solution, after removing a 1k Ohm resistor (see picture) they
started working - at least with 57600 speed -
the downsite is that the RXD LED is not flashing anymore
maybe this will help someone,
Best Regards,
Paweł