dear concern,
how sketch arduino ac measurement using stepdown transformer 240/9 vac , voltage divider r1 100kohm , r2 10kohm..i'm no idea sketch..when sketch,it not display +-240v on serial monitor..
how sketch arduino ac measurement using stepdown transformer 240/9 vac , voltage divider r1 100kohm , r2 10kohm..i'm no idea sketch..when sketch,it not display +-240v on serial monitor..
Arduino Forum > Using Arduino > Programming Questions > ac voltage measurement
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