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Thread: Teensy 4.0 Analog Voltage Reference

  1. #1
    Junior Member
    Join Date
    Nov 2019
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    2

    Teensy 4.0 Analog Voltage Reference

    Hi,

    I am using the Teensy in a school competition and I need to take accurate voltage measurements with the analog pins. We chose the Teensy 4.0 for it's higher resolution and speed.

    I have an analog reference voltage which I would like to use rather than the internal one. I cannot find the AREF pin on the diagrams though, and I was wondering if someone could point me towards it.

    Thanks,
    Owen

  2. #2
    Senior Member vjmuzik's Avatar
    Join Date
    Apr 2017
    Location
    Florida
    Posts
    389
    AREF is hardwired to 3.3v on the Teensy 4.0 and the pin is not accessible so there is no way to change it like you can with some of the other models.

  3. #3
    Junior Member
    Join Date
    Nov 2019
    Posts
    2
    Ahh, thank you!

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