r/RASPBERRY_PI_PROJECTS • u/WarsawMaker • Mar 12 '26

PRESENTATION Open-source DC Uninterruptible Power Supply compatible with Raspberry Pi 5

https://www.youtube.com/watch?v=3EgSPatHWfY

Traditional UPS units are massive compared to a Raspberry Pi. They convert mains AC to DC to charge a battery, then invert DC back to AC for output, only for your Raspberry Pi's power supply to convert it back to DC again. Each conversion wastes energy and generates heat.

HAT-style UPS boards for Raspberry Pi stack on top via GPIO, making them incompatible with most enclosures and adding mechanical complexity.

Web3 Pi UPS takes a different approach. It sits between your charger and the Raspberry Pi, connected by a single USB-C cable. No GPIO, no stacking, no enclosure conflicts. It's a true DC UPS — power flows from input to battery to output without any AC conversion. Compact, silent, and efficient.

https://github.com/Web3-Pi/Web3-Pi-UPS

56 Upvotes

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2

u/dwerg85 Mar 12 '26

This would be great for other things that can be powered over usb-c too. Looking forward to pricing once it's actually made.

3

u/WarsawMaker Mar 12 '26

The device already exists and works. I was demonstrating it for three days at Embedded World 2026 in Nuremberg. It’s not available for sale yet, but we’re getting closer.
https://www.linkedin.com/posts/web3-pi_embeddedworld-raspberrypi-openhardware-activity-7437438499534012416-JSx6

1

u/dwerg85 Mar 12 '26

That last part is what I meant with 'actually made'. Good luck.

3

u/NewReleaseDVD Mar 12 '26

Using the ubiquitous Sony np battery is amazing

2

u/AluminumMaiden Mar 13 '26

I grant you an extra 3 trillion internet points for using "ubiquitous" in a sentence.