Arduino Photorecptor code

gistfile1.txt

const int RLED = 9;
const int LIGHT = 0;
const int MIN_LIGHT = 200;
const int MAX_LIGHT = 900;
int val = 0;


void setup() {
  pinMode(RLED, OUTPUT);

}

void loop() {
  val = analogRead(LIGHT);
  val = map(val, MIN_LIGHT, MAX_LIGHT, 255, 0);
  val = constrain(val, 0, 255);
  analogWrite(RLED, val);

}