@MLs mmm not sure then, it works for me on Windows 7 with 1.8.1 (slightly newer version?)

@MLs In Device Manager what com port is assigned to the sensebender GW? Have you manually installed the inf file?

com4 is likely the last com port you used in the arduino interface not the one assigned to the GW.

@tbowmo Also, I notice on Linux (Raspberry Pi 3 running Debian) the device appears as an ACM device rather than the usual TTY device that some might expect. It works fine though so no issues but may confuse alot of people - worth making a note somewhere.

@tbowmo Compiles fine now with 1.0.4, not convinced the drivers are being automatically picked up though. I can force install them by selecting the inf but presumably you want it automatic when someone plugs in the gateway?

I notice in the arduino SAMD package they have a post-install.bat to seemingly install the inf file - possibly needed?

It could also be that i've just messed things up with my manual driver install stuff yesterday. I'm on Windows 7 by the way.

@tbowmo Great, took a an hour or two to work out what was going on. Not used MySensors before so presumed it was something I was doing wrong. I have an RFM69HW soldered on the sensebender GW now with the serial sketch loaded and it appears to be working!

Few things about the software side of this. When you plug it into your computer it appears as a "Sensebender GW", with a custom USB VID/PID. You have to override the drivers and use the "Atmel Corp. EDBG CMSIS-DAP" serial port drivers or you will have no serial port at all to communicate with the board.

Second issue, with the latest Arduino software (1.8.1), and the MySensors SAMD board package installed and MySensor library installed you get an error relating to a missing core "arduino:arduino". Solution to that one is to install the main Arduino SAMD board package which adds the necessary libraries. Secondly, after doing that you will now get another error regarding a missing "Sam.h" file, to fix that you have to manually edit the platform.txt file in "\AppData\Local\Arduino15\packages\MySensors\hardware\samd\1.0.3" with the contents of the one from "\AppData\Local\Arduino15\packages\arduino\hardware\samd\1.6.11" - just being careful to copy over the name and version lines from the top of the Mysensors platform.txt file. After that you are good to go and can finally program the board or get some data out of it