Witty L3V7 Home Assistant

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Last Post by Wallace 3 days ago

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Wallace

(@wallace)

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I have a Raspberry Pi 4 running Home Assistant on a boat, where the power can be switched off at any time. I can use the Witty L3V7 as a UPS for as long as the battery lasts.

I don't think I can have the Witty software running on the Pi under HAOS (or can I?) so I want to be able to read the i2C data via a Wemos Di mini, which will then feed the data to HA automations to e.g. perform a soft shutdown. Using Arduino IDE I can see that data is being received by the Wemos over i2C. I would like to program the Wemos using EspHome in HA to create data entities to then perform the automations.

Has anyone done this before and can you give me any guidance?

Posted : 27/06/2025 10:37 am

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