On Tue, Jun 6, 2017 at 10:00 AM, Riley, Ian C CTR NSWC Philadelphia, 515 < ian.riley....@navy.mil> wrote:
> Is there a practical minimum for what voltage you can feed into AREF? > It is hard to find on the data sheet, but the minimum voltage for an Arduino's AREF is the internal analog reference voltage - 1.1V for the Uno, 2.56V for the Leonardo or Micro. The 32U4 chip in the Leo and Micro has options for differential analog input and gains of 10, 40, or 200 but they are not supported by the Arduino IDE - you have to set the internal registers directly to use them. Also the input amplifier is pretty slow. -- --Jim Harman _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
