Hi, I trying to mesure the voltage of my 12V battery with arduino , for that I'm using a LM317 DC-DC Voltage Regulator Step Down Module with those features: Output Current: 1.5A (min), 2.2A (typ) Input-output voltage differential (VI-VO): 40Vdc (max) Adjustable output voltage range: 1.2 ~ 37V Ope…

Analog Read problem

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