My UPS Pal OLED

Your UPS speaks NUT now. Now with a screen.

Plenty of UPSes live in a closet, a garage or a cabin, nowhere near a PC. The usual fix is a Raspberry Pi, which is more computer than the job needs and costs more than it should.

My UPS Pal does one thing: it reads your UPS over USB and shares it on your Wi-Fi as a standard NUT server. Anything that already talks to a UPS just works. This version adds a small OLED display, so you can see charge, runtime, volts and load without opening a web page.

How it works

• Plug your UPS's USB cable into the board and power it from USB-C.
• Join it to your Wi-Fi from the setup page.
• Add it to the monitoring you already use.

What you get

• OLED display showing charge, runtime, volts and load
• Works with Home Assistant, Synology, TrueNAS, unraid, Linux upsmon and Prometheus
• A built-in web page with live battery, runtime, load and power
• Remote monitoring over Tailscale, privately, with no port forwarding
• An outage log and long history
• HTTPS, and a login for anything that changes settings
• Over-the-air updates that roll back by themselves if an update fails
• Reconnects after a Wi-Fi drop or a UPS replug
• Sips power: about 5 V at 0.08 A in normal use

Open source

The firmware is GPL-3.0. Read it, build it, change it: github.com/aronreid/ups-to-esp32

Full specs: myupspal.com/specs

Ships from Canada. US orders ship with duties prepaid, so there's nothing extra to pay at the door.

Designed in Canada.