Anyway having quadruple-checked my wiring, I am now up and running. Thanks to all for the help.
Little test with 2 modules:



Congrats, to success, now the funny part can begin :-)
btw, nice visualization of data on display.

I can share some photos of my BMS here for inspiration. its designed ...

hi @inaglasshouse
I am new on this forum, but I have some knowledge about those batteries. If you go throught daisychain init without errors, but cant communicate with slaves, please use as first command after daisychain init " readAllSlaves(0x00, false); and write me what was returned.