Ok, no help here.

Thanks gohan.. This forum is a great source of inspiration. Lots of examples of people and their own projects, and/or problems they encounter(ed). I'm fairly new to MySensors & Arduino, but i have a lot of experience with Atmel AVR. At this time, i'm more reading than writing: absorbing info first. Hopefully i can help out others too sometimes.. it's cool to share knowledge. I already have 10 Arduino Yúns & 2 Raspberries at my disposal (they belong to friends i'm helping out). It would be fun to find a sensible application to combine a MySensors radio network (or perhaps multiple networks), and the IOT-capabilities of the Yún(s) & Raspberries. But that's another project..