Ingredients :
1- RGB LED #1
2- Phototransistor #3
3- Resistor 220Ω #3
4- Resistor 10KΩ #3
5- Gel Red #1
6- Gel Green #1
7- Gel Blue #1
8- Wire
BUILD THE CIRCUIT
Code:
const int greenLEDPin=9;
const int blueLEDPin=10;
const int redLEDPin=11;
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(blueLEDPin,OUTPUT);
pinMode(redLEDPin,OUTPUT);
}
void loop() {
redSensorValue=analogRead(redSensorPin);
delay(5);
greenSensorValue=analogRead(greenSensorPin);
delay(5);
blueSensorValue=analogRead(blueSensorPin);
Serial.print(“Raw Sensor Value \t red: “);
Serial.print(redSensorValue);
Serial.print(” \t green: “);
Serial.print(greenSensorValue);
Serial.print(” \t blue: “);
Serial.println(blueSensorValue);
redValue=redSensorValue/4;
greenValue=greenSensorValue/4;
blueValue=blueSensorValue/4;
Serial.print(“Maped Sensor Value \t red: “);
Serial.print(redValue);
Serial.print(” \t green: “);
Serial.print(greenValue);
Serial.print(” \t blue: “);
Serial.println(blueValue);
analogWrite(redLEDPin,redValue);
analogWrite(greenLEDPin,greenValue);
analogWrite(blueLEDPin,blueValue);
}