When the APM is powered from the RC equipment what is the acceptable voltage range?  I know it's ~ 5 volts, but 5 volts +/- what?

Typical RC servo/radio power is anywhere from 4.5 to 6 volts.  Will 6 volts be too much?  What about 5.5 volts?

 

Typically a ~5 volt component will be rated for something like 5 volts, +/- 5% or +/- 10% like the Amtel 2560 chip.  A bit more is usually OK, but strange/intermittent  things can happen as the limits are pushed.

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4.5 to 6 should be fine.

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