_HowTo: Simple UPS for RPi

Quite some time ago I designed this simple but effective battery operated emergency supply. It is used to prevent short brown-outs and also allows the Pi to shutdown without corrupting the SD card.

here is the form post from raspberrypi.org : https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=52860&p=500147#p500147

Enjoy!
Paulv

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