Hello,
I have noticed the the analog reference pin, AREF, on the mkr1010 can impact the analogread even when using the default setting of analogReference(AR_DEFAULT) called during setup.
Shouldn't the correct behavior be to ignore the voltage on the AREF pin unless specifically requesting analogReference(AR_EXTERNAL)?
Has anyone else seen this or can help?
The application I am making requires a clean analog read and it is surprisingly noisy. I am happy to share more info if needed.
Regards, JF
I have noticed the the analog reference pin, AREF, on the mkr1010 can impact the analogread even when using the default setting of analogReference(AR_DEFAULT) called during setup.
And "impact" means exactly?
Shouldn't the correct behavior be to ignore the voltage on the AREF pin unless specifically requesting analogReference(AR_EXTERNAL)?
Yes, as long as the voltage on the AREF pin is below 2.7V.
The application I am making requires a clean analog read and it is surprisingly noisy. I am happy to share more info if needed.
Did you check if the supply power doesn't show the same noise? What does noisy mean? I cannot find the wiring diagram in your post, did you really read the sticky post at the top of the topic?