It was a pleasure to use Railuino (thanks Mr Pleumann)

Arduino Due is more powerful (CPU & memory)
Hardware extension (transceiver) is easy
Interrupt response time (S88 detection) is stable
MFX support - thanks Yaasan

Dok : http://gelit.ch/Raildue_E.pdf
Code : http://gelit.ch/Raildue.zip

gelit@bluewin.ch / 27 avril 2017