Thanks, will try that tonight.

I've read that the occassional flashing of the TX and AREF LEDs is driven by a factory loaded sketch to show that the arduino functions?

No, sorry but never having used an arduino before, I don't know how to do that. Guess I need to read up on arduino...

I need to replace my Ninja Block as I fear the cloud service will disappear soon, so after a period of research, I got Domoticz running on a Raspberry Pi I had kicking around and ordered an Arduino/RFlink/Antenna/Enclosure kit from Nodo shop. Having soldered the kit, plugged into the Arduino and ...