Pin 1 (A0) Not outputing 3.3v
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- eboxhead
- Posts: 20
- Joined: Wed Nov 09, 2011 4:07 pm
Pin 1 (A0) Not outputing 3.3v
Im currently working on outputting a simple triangle wave from the Trinket, and I noticed that pin A0 never seems to go above 2.2ish volts. If I change to pretty much any other Analog pin it works fine. I've tried with both 8 and 10 bit resolution (analogWriteResolution) and I don't notice a difference. Am I possibly setting something up incorrectly?
- adafruit_support_mike
- Posts: 67446
- Joined: Thu Feb 11, 2010 2:51 pm
Re: Pin 1 (A0) Not outputing 3.3v
What board are you using?
- eboxhead
- Posts: 20
- Joined: Wed Nov 09, 2011 4:07 pm
Re: Pin 1 (A0) Not outputing 3.3v
Sorry, Trinket M0.
- adafruit_support_mike
- Posts: 67446
- Joined: Thu Feb 11, 2010 2:51 pm
Re: Pin 1 (A0) Not outputing 3.3v
Thanks.. do you have any kind of load connected to the pin? My first guess would be current limiting.
As a side question, are you getting a triangle wave scaled down to a lower maximum voltage, or the bottom part of a 3.3V triangle wave that clips at the high end?
As a side question, are you getting a triangle wave scaled down to a lower maximum voltage, or the bottom part of a 3.3V triangle wave that clips at the high end?
Please be positive and constructive with your questions and comments.