Voltmeter using Arduino Mini Pro & Nokia 5110 LCD #45

[@thevivekmathema]

Nice project but its NOT recommended to use the volt meter without using a resistor-based voltage divider or else you will burn the Chip very soon. Even for 0-5 Volt you should use the Voltage dividing cricuit with approprate resistor and calculate using R1 & R2 ( typically 10000 and 10000 OHMS) formula Vout =(R1) /(R1 + R2) * Vin

[@tomevans1481]

+VibeX MaTxeMaThanks for providing the GOOD advice and formula.

[@SKElectronics]

how much current and volt can take

[@freddiemortos8519]

Nice Project. Can you share your updated code that can measure current and watts?

[@aniketshinde6743]

bro ur voltage is floating when not connected to anything use pull down resistor to solve this prblem

[@sangmawidawman3051]

If u measure voltages in opposite polarity....u may destroy your arduino

[@matiasbrollo6871]

pffffff que mentira! usaste una miniatura engañosa para el video.

[@brtk7]

thanks for sharing it

[@Guhimbaza_piano]

this s so great