[brokenmachine]

Thanks for the info. I did buy a knockoff J-Link but haven't got around to trying it yet.

I've only used the Arduino Mini/Micro so far (with Atmega328 or Atmega32u4). Is it possible to debug on those?

[strong_silent_t]

Not sure, I haven't used that platform personally, there is probably a debugging interface to the chip but it will probably require different hardware/software.