Feather 5V power source

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rp2040
 
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Feather 5V power source

Post by rp2040 »

Is it acceptable to power the RP2040 Feather through the JST port with a 5V power source. I am currently using a buck converter that converts 110V to 3.3V. The 3.3V consistently powers the Feather 2040, relay, rotary encoder and the thermocouple board, however, the Adafruit Grayscale display does not consistently turn on with on 3.3V (or at least that is what seems to be the problem). Obviously I could use the USB port but I have that dedicated for something else. If 5V through the JST port is safe then all my problems are solved. From what I found on the internet it looks like the JST port on the Challenger 2040 can handle 5V but I would rather use the Adafruit feather if possible. Also, I read on your website that while not ideal it is technically possible to feed power through the USB and GND pins so I suppose that while not ideal might be a last ditch option. Thank you.
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dastels
 
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Re: Feather 5V power source

Post by dastels »

The battery JST connector is meant for a LiPoly battery. I would not connect anything other than such a battery.

Supplying 5v via the USB pin is the same as using the USB connector EXCEPT that there's no protection between the two, so you can't supply 5v to both at the same time.

Dave

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rp2040
 
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Re: Feather 5V power source

Post by rp2040 »

Thanks.

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