Simple UPS - Raspberry Pi Forums

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trying come decent ups , have far...
https://www.adafruit.com/products/259 charger w/pass-through power
https://www.adafruit.com/products/258rechargeable battery
https://www.adafruit.com/products/1903power booster ensure 5v delivered pi @ times.

remove power indicator led (if can't find connection) , use signal "shutdown pin"

tell me think...

making headway... found different option, powerboost 500 comes in variation has charging circuit built in. makes things alot easier. on 500c tapped usb pin connected directly incoming power mosfet holding pin on pi's gpio header. when power unpluged pin goes low pi shuts self down.
thing left due make pi start when power returns, on 500c there enable pin, pin held high , when connected ground turns off output battery, think can use mosfet , capacitor create delay on break circuit pull pin low once shutdown complete.
there low battery pin held high, think if can connect enable pin give me low-votage protection battery.
please weigh in , tell me think, input before un release magic smoke!


raspberrypi



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