Ciao @4ib3r , thank you for your support to the PJON project. I accepted your pull request. What you proposed highers portability and reduces compatibility issues like this one in particular with MySensors. I will soon use your attached example to make a brief wiki page where to explain how to use PJON with MySensors.

Ciao gryzli133! I am happy to hear that.
Are you testing SoftwareBitBang (PJDL v2.0) data-link?

The system works also if using the human body as a common conductor, so yes, quite rugged I agree. There are a lot of setups around the world running PJDL, many of them have matured already years of operation. I have personally built a bus of more than 40 meters of wires in star topology, made by cat 5 ethernet (gnd, vin, PJDL bus, the rest is unused) positioned in the same channels where AC wiring is positioned.

With AC wiring or appliancies in the vicinity, without any pull-down resistor, the induced 50Hz waveform may be present in the bus stealing half of the bandwidth (the PJDL protocol is perfectly able to avoid the wave crests and operate nominally in this scenario) obviously placing pull down resistors that can be erased obtaining the best performance.

4ib3r worked out the support long ago and made a pull request, I am not sure what happened then and if that was accepted. Many things are changed since then in PJON so that work may be outdated, although it should be fairly simple to fix. I am obviously always available for support if required.