Anyone willing to make their own BMS. I prepared my iteration of files and documentation on Harlequin2s BMS on my website. Files are meaningfully named, though user manual is still written in Slovenian language. For english speakers, you should check Harlequin2s original manual.
http://mazdamx3ev.files.wordpress.co...avo-bms_r3.pdf
File is named .pdf due to server restriction with .rar files.
Download the file, rename it to .rar and browse. You should get idea of purpose from the file names
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There are gerber files for pcb manufacture as well as .pcb files for designing your own board dimension.
Regarding functionality, all works. You have to be precise with BOM. Specially optocouplers are critical. Now the 3.6V/cell charger cutoff works good and comms are stable. I also added failsafe loop to cutoff the charger if any cell goes beyond 3.8V and if comms fall off.
I am now working on communication with PC or Android device. So you could perform a sort of regular servicing, checking each cell value and spot irregularities. Shouldnt be too complicated...
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Have a great time constructing...
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