$1 PinePhone pogo pin breakout board lets you connect add-ons without removing the back cover



There are a lot of things that make the PinePhone different than most smartphones. It’s designed to run GNU/Linux-based operating systems. It has physical switches that can disable the camera, mic, and wireless features. And it has a set of pogo pins that make it possible to connect add-ons like a keyboard, fingerprint reader, or thermal camera to extend the functionality of the phone
The only problem is that you have to pop off the back cover to access those pogo pins, so many of the official and unofficial PinePhone mods that take advantage of the pins are designed to either replace the cover with a new one or cut a hole in the existing cover.
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