Potentiometer

This example is for Wiring version 0027+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

Photoresistor by BARRAGAN

Reads values from a photoresistor connected to analog input pin 0 (or A0) and prints the result to the serial monitor The value read from the sensor is proportional to the amount of light that hits the sensor's surface.


int sensorValue; 

void setup()
{
  Serial.begin(9600);      // starts the serial port at 9600
}

void loop() 
{
  sensorValue = analogRead(0);  // read analog input pin 0
  Serial.print(sensorValue, DEC);  // prints the value read
  Serial.print(" ");	           // prints a space between the numbers
  delay(100);                      // wait 100ms for next reading
}