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A project log for [mUPS] Minimal UPS for Raspberry Pi

A short hold-up UPS with automatic safe shutdown and reboot

Paul CrouchPaul Crouch 04/14/2019 at 13:020 Comments

Dammit! I went to use the Pi and the bloody thing wouldn't power up properly. The power LED lights and the activity LED briefly flickers. A USB meter showed the Pi supply voltage drops to ~3.6V after a short time. Not enough for the Pi to boot.

Maybe I've messed up the wiring and I've got some current going somewhere it shouldn't and something is overheating? I need to pull it apart again to investigate.

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