AREF on lattepanda alpha?

userHead INeedAFan 2021-04-27 05:54:47 1671 Views0 Replies

I have very unstable results when using analogRead on the latte panda alpha. If I connect 3.3V on say A0, the read value ranges from 677 to 689 and sometimes it is worse.
It is not good for my application.

If I look at the atmega32U4 datasheet, there is a AREF, but I don't see it on the lattepanda alpha pinout.

Is there a way to use external supply for the analog reference?