tailscale

Network cards for big UPS units are expensive, and running a full Raspberry Pi just to watch one UPS can feel like overkill. Reddit user Smooth_Ganache897 hit both problems: a garage UPS keeping a camera alive had a dead battery when it was needed, and a rack-mount APC unit needed a costly network card. The answer is ups-to-esp32, an open-source ESP32-S3 board that plugs into a UPS's USB port…