Push Button RGB LED Color Change Project with Arduino

In this Arduino project, we will control an RGB LED using Push Button to change color interfacing with Arduino Board. Basically, The RGB LED will cycle through the colors red, green, blue, purple and white when we press the "Push Button". Let's make it.

Components List

The following components are needed for this project.

1. RGB LED Module (or 1x RGB LED, 3x 150R Resistor).
2. Arduino Board.
3. Push Button Module (or 1x Push Button, 1x 1K Resistor).
4. Breadboard.
5. Jumper Wires.

I used KY-016 RGB LED Module and Push Button Module in this project. Don't worry, you can easily create these modules in your home.

KY-016 RGB LED Module Pinout.

Push Button Module Pinout.

Circuit Schematic

Now let us interface RGB LED and Push Button with Arduino. So the circuit diagram and connection are given below. You can follow the same.

Source Code/Program

The source code/program for interfacing RGB LED and Push Button with Arduino is given below. Copy this code and upload it to Arduino Board.

#define button 11
#define redLED 8
#define greenLED 9
#define blueLED 10
int state = 0;
int old = 0;
int buttonPoll = 0;

void setup() {
 pinMode(button,INPUT);
 //RGB LED set as output
 pinMode(redLED,OUTPUT);
 pinMode(greenLED,OUTPUT);
 pinMode(blueLED,OUTPUT);

 digitalWrite(redLED,LOW);
 digitalWrite(greenLED,LOW);
 digitalWrite(blueLED,LOW);
}

void loop() {
 buttonPoll = digitalRead(button);
 if(buttonPoll == 1) {
 delay(50);
 buttonPoll = digitalRead(button);
 if(buttonPoll == 0) {
 state = old + 1;
 }
 }
 else {
 delay(100);
}

switch (state) {
 case 1: //Red color
 digitalWrite(redLED,HIGH);
 digitalWrite(greenLED,LOW);
 digitalWrite(blueLED,LOW);
 old = state;
 break;
 case 2: //Green color
 digitalWrite(redLED,LOW);
 digitalWrite(greenLED,HIGH);
 digitalWrite(blueLED,LOW);
 old = state;
 break;
 case 3: //Blue color
 digitalWrite(redLED,LOW);
 digitalWrite(greenLED,LOW);
 digitalWrite(blueLED,HIGH);
 old = state; 
 break;
 case 4: //Purple color
 digitalWrite(redLED,HIGH);
 digitalWrite(greenLED,LOW);
 digitalWrite(blueLED,HIGH);
 old = state; 
 break;
 case 5: //White color
 digitalWrite(redLED,HIGH);
 digitalWrite(greenLED,HIGH);
 digitalWrite(blueLED,HIGH);
 old = state; 
 break;
 default:
 digitalWrite(redLED,LOW);
 digitalWrite(greenLED,LOW);
 digitalWrite(blueLED,LOW);
 old = 0;
 break;
 }
}

Watch the video! - Testing this project