Hi there,
May I ask which Equipment did you use to sample the cell voltages and the current?
Regards Hans
I use RPI4 with USB - RS232 (DB9) adapter to pull the data from inverter, and just RPI built-in BLE to connect to BMS.
I also use https://github.com/jblance/mpp-solar to pull the data and send to influxdb via mqtt.
The biggest issue so far is the connection reliability (mpp-solar is able to connect once per evey 5-10 requests), so instead of getting data every 5 seconds, I have it every 1 minute or so. The once-connect and then periodically pull would be better model, than to connect-pull every time, but this is not implemented yet in mpp-solar to my knowledge.
I consider switching to RS485 cable connection for better connection reliability, but even with BLE I see lots of value in the data.