Example Mood Light #1

Matt — Sat, 04 Feb 2012 22:42:21 +0000

// Make variables for individual LEDs
int r = 0;
int g = 0;
int b = 0;

// Make variable to store incoming sensor value
int sVal = 0;

int sStart = 0;

// Set Pins Locations
int sPin = 0;  //Sensor Pin
int rLed = 3;
int gLed = 5;
int bLed = 6;

void setup(){
  Serial.begin(9600);
  pinMode(sPin,INPUT);

  //Calibrate light sensor when it first starts up
  sStart = analogRead(sPin);

  //the rest of the pins are assumed OUTPUT
}

void loop(){
  //read sensor and change sVal to it
  sVal = analogRead(sPin);
  Serial.print("incoming = ");
  Serial.print(sVal);
  Serial.print(", ");
  sVal = map(sVal,10,sStart,0,255);
  sVal = constrain(sVal,0,255);

  //send value to computer so we can adjust our code
  Serial.println(sVal);

  if(sVal <= 64)
  {
    digitalWrite(rLed,HIGH);
    digitalWrite(gLed,LOW);
    digitalWrite(bLed,LOW);
  }
  else if(sVal <= 128)
  {
    digitalWrite(rLed,LOW);
    digitalWrite(gLed,HIGH);
    digitalWrite(bLed,LOW);
  }
  else if(sVal <= 192)
  {
    digitalWrite(rLed,LOW);
    digitalWrite(gLed,LOW);
    digitalWrite(bLed,HIGH);
  }
  else
  {
    for(int fadeValue = 0 ; fadeValue <= 255; fadeValue +=5) {
      // sets the value (range from 0 to 255):
      analogWrite(rLed, fadeValue);
      analogWrite(gLed, fadeValue);
      analogWrite(bLed, fadeValue);

      tone(9, fadeValue);
      // wait for 30 milliseconds to see the dimming effect
      delay(30);
    } 

    // fade out from max to min in increments of 5 points:
    for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) {
      // sets the value (range from 0 to 255):
      analogWrite(rLed, fadeValue);
      analogWrite(gLed, fadeValue);
      analogWrite(bLed, fadeValue);
      tone(9, fadeValue);
      // wait for 30 milliseconds to see the dimming effect
      delay(30);
    }
    noTone(9);
  }

}
Mud and Mayhem

Example Mood Light #1
