Power input

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JNils
 
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Joined: Mon Oct 03, 2022 10:45 pm

Power input

Post by JNils »

What would be the best way to power a 32u4 5 v from a 4AA battery pack.
1. Battery voltage at Vin.
2. 5 V from a adjustable converter at the USB pin.
3. Other?
The battery box has a switch so it can be disconnected when plugged into USB.

Thanks

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dastels
 
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Joined: Tue Oct 20, 2015 3:22 pm

Re: Power input

Post by dastels »

I don't see a Vin pin. But attach the battery to BAT/Vbat and ground. The onboard regulator converts it to 5v and there's a protection diode on the USB's 5v line to you don't have to fret about forgetting to disconnect the battery when you plug in USB.

Dave

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