This is how I did it for the Sensebender Micro: https://forum.mysensors.org/topic/2725/sensebender-micro/29

Upon further investigation of the TransportMessage function it looks like GW has been configured with MY_REPEATER_FEATURE = ON! Is it normal? Shouldnt this be false for a gateway sketch? Or does this mean that the MYSBootloader.hex file on the new node has this Repeater feature on? @hek, Your thoughts... Am i prodding in the right direction or am off-track completely?

@Yveaux , ohk! BTW, Is there any Repetition check and discard function in the library or atleast a way to do that?

@vikasjee There is no need for a MySensors specific library. You can use the standard library and use I2C with a "standard library" like adafruit's.

@AWI Thanks for the piece of code. Now i can see where i was wrong! Let me run it... this seems to be missing the interrupt part though. I will try using DV on Int2...