FTDI adapter looks good - it works fine with other Moteinos. When I connect "bad" Moteino, FTDI TX light is blinking all the time. And when I hit Upload sketch, it uploads infinitely.
I'm using official Moteino and FTDI adapter from Felix's shop.
I feel really bad for that brand new Moteino R6 with flash chip on it
If I connect COM to VIN source (high side of relay), I don't need that additional 1N4000 diode, is that corret?
So I simply do this additional connection (see red bolded line on COM connection - COM connected to "+"):
Can you confirm this PCB fix?