Display RGB Light With Arduino Mega 2560

Introduction:

• In this article I will explain about displaying RGB Light With Arduino Mega 2560.
• It can be used to change according to the colored paper.
• It can work under the color sensor. 

Parts Of Lists:

• Arduino Mega 2560
• LED-3
• Color sensor
• Hookup Wires

 

Color Sensor: 

• The color sensor can be used to convert the light to frequency converter.
• It can be used to filter the RGB color.
• We will calculate the RGB color value.
  
  
                   Figure 1: Color sensor.

Connection:

Step 1: Connection From Color Sensor To Arduino Mega 2560:

• Connect the S0 pin to the GND of the Arduino board. 
• Connect the S1 pin to the VCC of the 5V  Arduino board.
• Connect the S2 pin to the 03  of the Arduino board.
• Connect the S3 pin to the 04 of the Arduino board.
• Connect the S0 pin to the 05 of the Arduino board.
• Connect the VCC pin to the 5V of the Arduino board.
• Connect the GND pin to the GND of the Arduino board. 

Step 2: Connection From LED To Arduino Mega 2560:

 

LED 1 : RED Color:

• Postive pin to the 13.
• Negative pin to the GND. 

LED 2 : GREEN Color:

• Postive pin to the 12.
• Negative pin to the GND. 

LED 3 : BLUE Color:

• Postive pin to the 11.
• Negative pin to the GND. 

Programming:

int redPin=13; // red ping
int greenPin=12; // green pin
int bluePin=11; // blue pin

int S2=03; // Color sensore pin S2 to Arduino pin 7
int S3=04; // Color sensor pin S3 to Arduino pin 8
int outPin=05; // color Sensor OUT to Arduino pin 4

int rColorStrength;
int gColorStrength;
int bcolorStrength;

unsigned int pulseWidth;

void setup() {
Serial.begin (9600); //Turn on serial port

pinMode(redPin, OUTPUT);
pinMode(greenPin, OUTPUT);
pinMode(bluePin, OUTPUT);

pinMode(S2, OUTPUT);
pinMode(S3, OUTPUT);
pinMode(outPin, INPUT);

}

void loop() {
// Lets star by reading Red component of the color
// S2 and S3 should be set LOW

digitalWrite(S2,LOW);
digitalWrite(S3,LOW);

pulseWidth = pulseIn(outPin,LOW);

rColorStrength = pulseWidth/400. -1;

rColorStrength = (255- rColorStrength);

// Lets read green component of the color
// S2 and S3 should be set LOW

digitalWrite (S2,HIGH);
digitalWrite (S3,HIGH);

pulseWidth = pulseIn(outPin,LOW);

gColorStrength = pulseWidth/400. -1;

gColorStrength = (255- gColorStrength);

// Lets read blue component of the color
// S2 and S3 should be set LOW and HIGH Repectively

digitalWrite(S2,LOW);
digitalWrite(S3,HIGH);

pulseWidth = pulseIn(outPin,LOW);

bcolorStrength = pulseWidth/400. -1;

bcolorStrength = (255- bcolorStrength);

Serial.print(rColorStrength);
Serial.print(“, “);
Serial.print(gColorStrength);
Serial.print(“, “);
Serial.println(bcolorStrength);
Serial.println(“ ”);
if (rcolorstrength>bcolorstrength &&rcolorstrength>gcolorstrength){
digitalwrite(redpin,HIGH);
digitalwrite(bluepin,LOW);
digitalwrite(greenpin,LOW);
}
if (gcolorstrength>bcolorstrength &&gcolorstrength>rcolorstrength){
digitalwrite(redpin,LOW);
digitalwrite(bluepin,LOW);
digitalwrite(greenpin,HIGH);
}
if (bcolorstrength>rcolorstrength &&bcolorstrength>gcolorstrength){
digitalwrite(redpin,LOW);
digitalwrite(bluepin,HIGH);
digitalwrite(greenpin,LOW);
}
delay(250);
}

Explanation:

• In this article I have explained about displaying RGB color in the Arduinomega2560.
• It changes when the color is shown near the sensor and reflected in the LED.
• The color value can be seen in the serial monitor. 
• For red, it will turn ON the red LED color.
• For blue, it will turn ON the blue LED color.
• For green, it will turn ON the green LED color. 

Output:

  
                                  Figure 2: Output

 

Read more articles on Arduino:

• Introducing Arduino Nano
• Gas Detector Using Arduino