EmonTx V3.2 upgraded firmware now voltage reads wrong

[Robert.Wall]

OK, The emonLibCM library itself works on all emonTx versions so far (even with limitations on the V4!)
The rfmTxLib can only transmit, but that too will work with both the RFM12B and the RFM69CW. What I suggest is exactly as I wrote to another correspondent only days ago:

@Robert.Wall

I think your starting point will be the example sketches that come with emonLibCM - particularly the one with the radio: EmonTxV34CM_min_RFM69.ino – but this is RFM69CW only, so you need to remove the rfm.ino file and use rfmTxLib instead. You will need to make some minor changes as a result.

[Note, the “max” sketch is only there to illustrate every setting for emonLibCM - but it changes nothing because those settings above and beyond the “min” sketch only set the default values again anyway.

Both libraries are documented, but if you run into problems, do ask.