Lesson 4 Arduino Projects Book

In lesson 4, you are asked to make sing a color mixing lamp that uses a light sensor that calculates the amount of light that being exposed at an object. The more light you add the different the color will become on the four pronged clear LED.

 

const int greenLEDPin = 9;
const int redLEDPin = 11;
const int blueLEDPin = 10;

const int redSensorPin = A0;
const int greenSensorPin = A1;
const int blueSensorPin = A2;

int redValue = 0;
int greenValue = 0;
int blueValue = 0;

int redSensorValue = 0;
int greenSensorValue = 0;
int blueSensorValue = 0;

void setup() {
Serial.begin(9600);

pinMode (greenLEDPin,OUTPUT);
pinMode(redLEDPin,OUTPUT);
pinMode(blueLEDPin,OUTPUT);
}

void loop() {
redSensorValue = analogRead(redSensorPin);
delay(5);
greenSensorValue = analogRead(greenSensorPin);
delay(5);
blueSensorValue = analogRead(blueSensorPin);
delay(5);

Serial.print(“Raw Sensor Values \t Red: “);
Serial.print(redSensorValue);
Serial.print(“\t Green: “);
Serial.print(greenSensorValue);
Serial.print(“\t Blue: “);
Serial.print(blueSensorValue);

redValue = redSensorValue/4;
greenValue = greenSensorValue/4;
blueValue = blueSensorValue/4;

Serial.print(“Mapped Sensor Values \t Red: “);
Serial.print(redValue);
Serial.print(“\t Green: “);
Serial.print(greenValue);
Serial.print(“\t Blue: “);
Serial.print(blueValue);

analogWrite(redLEDPin, redValue);
analogWrite(greenLEDPin, greenValue);
analogWrite(blueLEDPin, blueValue);
}