Teensy 4.0 Analog Voltage Reference

[oschwartz]

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

 

[vjmuzik]

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.

 

[oschwartz]

Ahh, thank you!