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Hello, I have a museum installation where I need the Witty Pi to power up and down a Pi showing content. I ALSO need to have the Pis on 18650-based uninterruptible power supplies. Is there a wiring diagram that shows how to connect a UPS to a Pi that's already wearing a Witty Pi 4 hat?
Posted : 17/12/2024 7:46 pm
If you don't have a UPS yet, maybe you can consider using Witty Pi 4 L3V7. With a 18650 battery it can work as a UPS.
If you want to use Witty Pi 4 with your own UPS, I could not suggest the wiring, because I don't know about your UPS. What Witty Pi 4 needs is an uninterrupted power source, either 5V via USB-C connector, or higher voltage via the XH2.54 connector. If your UPS can offer that, Witty Pi 4 will work.
Posted : 18/12/2024 8:52 am
Topic starter
Ok, I just ordered 2 L3V7's. 🙂
Posted : 18/12/2024 4:39 pm
Topic starter
Ok, I'm a little confused. On the page for the L3V7, you show it mounted on a full-sized Pi 4. This was my intended use case. But I don't see any way to mount it on a full sized Pi 4. The 4 J14 pins for PoE and the heat sink keep it from seating properly. Did you clip the PoE pins? Are you running without a heatsink?
Posted : 31/12/2024 1:03 am
Topic starter
Sorry, never mind, I just read the manual and saw the entry about using the stacked header. My apologies.
Posted : 31/12/2024 1:21 am