I appear to be one of several individuals who are developing an arduino based charger/BMS/balancing circuit for an 18650 style battery system.
My approach is different from everything else I have seen which may be a good or bad thing - we shall see.
I have designed and built various PCB’s and have written and tested lot of code but this is a big project for one individual.
My original plan was to open source it and release when everything is working but that could take a very long time and at the end of it I may discover that others have better ideas than mine.
So, if anyone is interested I shall post some stuff in this thread to see what level of interest is out there.
I shall start with a system description and a pretty video of the arduino nano based charger PCB.