Comments (1)
bbqkees
commented on July 20, 2024
I don't have it online but you can use the schematic from Proddy's wiki:
https://github.com/proddy/EMS-ESP/wiki/building-your-own-test-circuit
Just don't include the powercap C1, and lower R4 and R5 to around 360.
If you want to use jack power instead of the bus, disconnect the anode side of D7 from the bus and connect D7 directly to the power pin of the jack.
If you use jack power you dont need C2 and C4.
Also there is a small mistake in that schematic. R11 should be 100k and R10 is 10k.
A 500mA buck is enough.
The parts list for SMD is in the Documentation folder of this repository.
from nefit-buderus-ems-bus-arduino-domoticz.
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from nefit-buderus-ems-bus-arduino-domoticz.