Hello, after having learnt that with a simple voltage divider, the Arduino Uno can have 3.3V output where I want, I am interested whether this works easier with simply connecting IOREF to 3V3. As far as I know, supplying voltage to the IOREF pin changes the input/output reference which is normally…

Arduino Uno with 3.3V I/O

system October 25, 2012, 4:18pm 5

ok,then I stick to the solution with voltage divider. thanks anyway

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