Hello.How could i reduce Voltaje in(9v battery or 12V-External power supply-) with a potentiometer and a 10k 1/4 resistance to V out a range 0-5V into A0(Pin) or Digital Pin?.And ,¿how to do the connections?. Thank you very much.

Potentiometer as voltage divider

MarkT May 8, 2014, 5:24pm 3

What are you trying to measure or achieve?

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