Where can I get the most current firmware?
The kit I just received has FW version 4.8.0 and the session KWh doesn't reset between charge. I see that it may be corrected with a later than 4.8.0 version but the official repository (open_evse) in GitHub has only 4.8.0.
The most current tested release is 4.8.0. If you would like to run the development code you can download, compile and load from https://github.com/lincomatic/open_evse.
the session kwh (left) should reset and add to the total (right) as soon as you unplug the vehicle.
The standard 4.8.0 release should work fine. After the session, unplug the EV. The session is added to the total, the next time you connect is should start at 0.
Development code is not pre-compiled. Periodically we compile, test and release. 4.8.0 is the latest.