Just test if the nano works as you might expect when using a windows computer. E.g. flashing the blink example with the Windows Arduino IDE.
Also, just to make things clear. The official USB nano costs € 22,-. If you buy just the nano from pilight it costs € 12,50. I'm of course not going to make losses. I sell nano's that have proven to work with a lot of pilight users. So not the ones with the CH340, but the ones with the right RS232 chip.
Also, just to make things clear. The official USB nano costs € 22,-. If you buy just the nano from pilight it costs € 12,50. I'm of course not going to make losses. I sell nano's that have proven to work with a lot of pilight users. So not the ones with the CH340, but the ones with the right RS232 chip.