Yi 4K action camera battery charging station
thingiverse
I recently bought a few extra batteries for my Yi 4K action camera. But I needed a way to charge them outside of the camera, so I made simple 3D printed thing which accommodates two 0.6 mm blades made from FR4 copper clad board and a TP4056 charging board with a microUSB connector. Very simple to make, but very useful and actually works surprisingly well. Some more info and photos [here](http://embedblog.eu/?p=154).
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