[accountabc]

I did notice some weird behaviour with my fake arduino. If I connect the arduino and then start the pilight service everything works as expected, but restarting the pilight service results in only being able to send, just like you described. As sending does still work I did not suspect the arduino. It seems the CH340 might be to blaim after all.

I'm going to try to connect my arduino straight to the tx/rx header on the pi, bypassing the CH340 chip all together. If this fixes anything I will report back