as a newbie could someone run down the versions
whats the difference between DIY v4 , V4.2 and openEVSE plus V4 ?
is there common firmware across all versions
what versions support the LCD and load current monitoring
The DIY v4, v4.2 and v4.21 were not official OpenEVSE products. They were designed by an OpenEVSE builder to be compatible with OpenEVSE code and contained some re-designed circuits. The design is older, not up to standard of the current boards and does not support current monitoring. The archive of the project is here: https://code.google.com/p/diy-openevse/
The current board available in the OpenEV store is the OpenEVSE PLUS v4 which does support current measurement and LCD.
DIY_OpenEVSE_PLUS git was a official product a couple of years ago. It is equivalent to the v2.5. From the v4 it is missing the diodes on the AC_Detect and the IEC proximity pilot circuit.
tnx! i see also that it based on ATMEGA8 and not ATMEGA328P
It is the DIP version of the 328P, the schematic used a generic footprint.