emonTX3CM Firmware and RFM12B / emonTx v2?

[borpin (Brian Orpin)]

@ichilton

Can you directly connect the Pi serial pins to the emonTx FTDI connector?

I really need to find the time to write up what I did properly but all the info is in this thread. You can just use the emonSD image, or install emonhub.

EmonTX to Rpi - Direct Serial Connection

So have the signal and gnd connected as per the photos have tried com_port= /dev/ttyUSB0 in the file emonhub.conf and com_port = /dev/ttyRS485-0 neither seem to work nothing is appearing in the inputs screen any way of fault finding. The TX unit has no lights on it well just one red light on start up for a 5 seconds.