5

The log you provide actually starts just after the RFM2Pi interfacer is created so we cannot see A) what baud it is trying to use and B) whether connection was successful.

If you are using an emonSD image the serail baud will be set to 115200 for the emonPi baud, if you are using a rfm12b based RFM2Pi the baud is most likely 9600 (you will have confirmed that when using minicom), so unles you have already, you will need to edit emonhub.conf and change the `com_baud=" setting in the [[RFM2Pi]] settings.

If the baud is correct check the com-port=/dev/xxxx address is the same as you used for minicom too.