Simple voltmeter using ADC

Solving Approach:

How do you plan to solve it?

• Read the voltage at Analogue Pin A0 and convert it into a voltage

Code

/*Paste your code here*/

void setup() {
  Serial.begin(115200);
}

void loop() {
  int val = analogRead(A0);
  float voltage = val * (5.0 / 1023.0); // convert to voltage
  Serial.println(voltage); // prints 0 to 5.0
  delay(100);
}

 

Output

Video

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Photo of Output

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