Arduino: Read Analog Voltage

Sumber: https://www.arduino.cc/en/Tutorial/ReadAnalogVoltage

Hardware Required

• Arduino or Genuino Board
• 10k ohm potentiometer

Rangkaian

Code

/*
  ReadAnalogVoltage
  Reads an analog input on pin 0, converts it to voltage, and prints the result to the serial monitor.
  Graphical representation is available using serial plotter (Tools > Serial Plotter menu)
  Attach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground.

  This example code is in the public domain.
*/

// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  int sensorValue = analogRead(A0);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
  float voltage = sensorValue * (5.0 / 1023.0);
  // print out the value you read:
  Serial.println(voltage);
  delay(200);
}

/*
  ReadAnalogVoltage
  Baca analog input di pin 0, convert ke volt, print hasil di serial monitor.
  Sambungkan pin tengah potentiometer, dan pin lainnya ke to +5V dan ground.
*/
void setup() {
  // initialisasi serial communication pada 9600 bits per second:
  Serial.begin(9600);
}

void loop() {
  // read input analog pin 0:
  int sensorValue = analogRead(A0);
  // konversikan analog data (dari 0 - 1023) ke tegangan (0 - 5V):
  float voltage = sensorValue * (5.0 / 1023.0);
  // print out nilai tegangan yang terbaca:
  Serial.println(voltage);
  delay(200);
}

Referensi

• https://www.arduino.cc/en/Tutorial/ReadAnalogVoltage