Simple voltmeter using ADC

Solving Approach:

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Code

/*Paste your code here*/
#define potpin A0
void setup()
{
  Serial.begin(9600);
  analogReference(DEFAULT);
}

void loop()
{
  int potval = analogRead(potpin);
  float voltageval = (float) potval / 1023 * 5;
  Serial.print("ADC Value: ");
  Serial.print(potval);
  Serial.print(" | Voltage: ");
  Serial.print(voltageval);
  Serial.println(" V");
  delay(50);
}


 

Output

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