Hello i have a Question is there a way to say if i have a power adapter on my uno fails is there a way to have a battery backup take over when my main power is dead? also if there is a way to charge that battery from the main power adapter ? some kind of switching power and charging of some kind. J…

Dual Power arduino

Paul_B April 27, 2014, 7:30am 3

robtillaart:
Please note the warnings in that thread - DO NOT DUAL POWER!

Ummm - why not? What will happen?

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