Also having a problem with zum radio v1.0 and Due. It appears that the boards all talk to each other. LEDs flash on the ZUM if pi star settings are changed. It doesn't seem to respond to the tx rx radios (GM350's). I assumed that platform.txt needed to be altered as the build.txt suggests. Has anyone got screenshots of pi star configuration settings of there setup? Pulling out what little hair I have left.
Help with other MMDVM Repeater Boards (with NO onboard RF)
Does anyone have a diagram for the ZUM radio v1.0 or point me in the right direction?