Community
OpenEnergyMonitor

Community

EmonTx not giving out serial data

Just set up a new EmonTx and have been having trouble getting anything from it. Connected it to a USB UART adaptor and all I an getting out is this:

emonTx V3.4 Discrete Sampling V3.10
OpenEnergyMonitor.org

No EEPROM config
RFM69CW Node: 8 Freq: 433Mhz Group: 210

POST…wait 10s
‘+++’ then [Enter] for RF config mode

and it just stops. No more updates, nothing. I have tried to upload a new sketch but there are no clear instructions on how to get the emonTx into a mode where I can upload a sketch.

No CT’s connected, powered by USB for now for debugging purposes.

Hello Justin, welcome to the OEM Forum.

I’m sorry you appear to be having a bad experience with your new emonTx.

It does rather sound as if you have a faulty RFM69CW radio module.

If you look at the sketch, the first significant thing it does after the “+++” message is initialise the RFM. If that fails, the sketch hangs there and can’t proceed.

Presumably, you’ve tried entering “+++” and get no response?

I suggest you email the shop [email protected] and mention this thread. They’re all away until later in the week, so they won’t answer straight away.

There aren’t instructions to put the emonTx into “upload” mode because you don’t need to. Just click “Upload” to compile and upload the sketch from the Arduino IDE. It ought to ‘just happen’.

1 Like