#124
Protect your Raspberry Pi from power cuts with help from this UPS (and an ATTiny85)
All sketches, circuit diagrams and so forth in my GitHub:
https://github.com/RalphBacon/Raspber...
Power cut? No problem!
Banggood have kindly supplied me with the Geekworm Power Pack Pro V1.1 Lithium Battery Power Source UPS HAT - a bit of a mouthful but basically, it's a UPS (Uninterruptable Power Supply) for your Raspberry Pi.
I'm using a Pi Model 3B+ but it should work with any 40-pin header model. Here's the link:
http://bit.ly/GeekwormUPS4Pi
(This is an affiliate link - if you click it and order the item within 14 days I get a tiny commission!)
Now, there is a well known "issue" with this board, inasmuch that if the battery becomes depleted it will not reconnect the power to the Pi once power is restored. Oops.
But a simple ATTiny85 module and a resistor or two plus a simple NPN transistor and we have the PERFECT solution!
The simple sketch I'm using to demonstrate this board, plus a circuit diagram can all be found on my GitHub.
And DON't MISS the very IMPORTANT warning at the end of the video, I don't want your UPS to be a pile of molten metal on your desktop. SERIOUSLY.
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My channel and blog are here:
/ ralphbacon
https://ralphbacon.blog