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
Power input
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- dastels
- Posts: 15820
- Joined: Tue Oct 20, 2015 3:22 pm
Re: Power input
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
Dave
Please be positive and constructive with your questions and comments.