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AREF as AnalogIn in CircuitPython?
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AREF as AnalogIn in CircuitPython?

by kevinjwalters on Sat Jun 05, 2021 6:45 pm

Can AREF on Feather boards be used as an AnalogIn using CircuitPython? It appears to work on a Feather nRF52840 Express. The schematic shows it has a 100nF to ground which places some limits on its use.

This was discussed for the SAMD21 in the arduino world in Using AREf as an analog input.

Does CircuitPython support use of AREF as reference voltage for the AnalogIn?

kevinjwalters
 
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Re: AREF as AnalogIn in CircuitPython?

by tannewt on Mon Jun 07, 2021 6:34 pm

I don't believe we support an external analog reference on any port.

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Please be positive and constructive with your questions and comments.