I have an EmonTx I bought in Jan 2014. text of order says ‘emonTx V3 - Fully Assembled’
I remember updating the sketch to pick up a number of temperature sensors (which are working fine), but the sketch has long since gone with a dead laptop.
I followed the link to the firmware on github from https://guide.openenergymonitor.org/technical/compiling/ (paragraph 2) but that is a 404 and I also seem to remember that there was some discussion about updated firmware for some versions of the EmonTX.
Whilst my usual thing is “if not broken don’t fix”, I have noticed that the EmonTx seems to send the data at between 11-12 seconds (according to the emonhub log), so a frame gets ‘dropped’ every 5 or 6 frames by emoncms (sampling at 10 seconds). It has probably always been doing that - I have never noticed before (yes I know 4 years).
So my plan is to have a look at this, update the firmware and see if it is my temp sensors causing the problem.
So first question is, what is the right firmware?