Thanks for the speedy reply! For full context, I already had the emonpi using continuous sampling mode (via that "Native RFM68 (New)” Firmware) fine for several months. I just got the emonTx this week (happy to see it had the “CM fw” preinstalled!) and was scratching my head for a while as to why it would not connect! It all makes sense now I read it through over again, that CM on the Tx side does not imply “using the new protocol”. I’ve now put the emonpi back to stock FW for now and it is indeed working fine
I indeed only have single phase (in the UK) so it would be EmonTxV34CM_rfm69n I need then.
I hadn’t seen the full set of steps needed in a concise form so wanted to check the overall steps in the recipe is correct (even if I got some of the ingredients wrong )
FWIW my original goal is tracking PV import/export and also controlling redirect (to immersion heater) so I’m okay going back to the old radio protocol, as on balance CM isn’t quite as useful as I hoped:
- The E1 and E2 accumulators don’t track “import” and “export” separately, so it’s not possible to properly track how much was spent/returned on energy coming from/to grid at different rates. (I believe this would need to follow the “1 Wh bucket” principle to be representative of UK meters’ billing personality)
- The sampling frequency of 1/5 Hz is lower than the ideal responsiveness for PV redirect, but it had seemed rather complicated to increase it.
I see adding RF reception (or 1-wire thermistors) is the main impediment to increasing sampling frequency. I have the option to connect the emonTx via serial cable so I might still do that anyway at some point.
Thanks!