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Finished my solar powerwall build with 812 cells
#11
(07-09-2019, 11:04 AM)stevelectric Wrote: Hi DomingoRP, I wrote a small python TCP socket server which communicates with the BMS over the Raspberry's built-in bluetooth module. It is basically in a proof of concept state but working fine. The logging and charting happens in my smart home Raspberry running a german open source thing named FHEM.

Edit: I just published the source here


Thank you for uploading the source code.  Do you have any stability issues with your program?  I programmed mine using the bluepy library, and I have to stop/start the bluetooth service to keep it working reliably.
Modular PowerShelf using 3D printed packs.  30kWh and growing.
https://secondlifestorage.com/t-AJW22-s-...PowerShelf
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#12
Pretty stable I'd say, disconnects did happen but seldom.
Currently it looks like this, continously running since a restart which was due to hardware reasons.

Code:
root       299  0.0  0.9   7200  May13  54:22 /usr/lib/bluetooth/bluetoothd
root      1031  0.0  3.0  49772  May13  54:37 python3 bmstcp.py A4:C1:38:0A:DD:AA 9998
root      1104  0.0  3.1  49772  May13  57:27 python3 bmstcp.py A4:C1:38:0A:7B:B3 9997
root      1169  0.0  3.0  49776  May13  58:56 python3 bmstcp.py A4:C1:38:0A:E3:B3 9999
root      1182  0.0  3.0  49776  May13  56:36 python3 bmstcp.py A4:C1:38:1E:DC:09 9996
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