Project1 - Dual Button Color Control System

1. What You Will Build

In this tutorial, you will learn how to build Project1 - Dual Button Color Control System using Arduino Starter Sheild Kit.

By the end of this tutorial, your project will be able to:

• • Control LED 1 using Switch 1

  • Control LED 2 using Switch 2

  • Change RGB LED colours automatically when both switches are pressed

2. What You Will Learn

After completing this tutorial, you should understand:

• How RGB LED colours mixing works

• How to control multiple LEDs using digital outputs

• How the code works step by step

3. Components Needed

4. Software Needed

Use the tools below depending on your board.

Libraries Needed

No library needed

5. Circuit Connection

Connect the components as shown below.

Wiring Steps

1. Connect Arduino shield kit to the Arduino uno board

6. Code

#define SW1 2
#define SW2 3

#define LED1 13
#define LED2 12

#define RED   9
#define GREEN 10
#define BLUE  11

void setup() {
  pinMode(SW1, INPUT_PULLUP);
  pinMode(SW2, INPUT_PULLUP);

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);

  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
}

void loop() {
  bool sw1 = !digitalRead(SW1);
  bool sw2 = !digitalRead(SW2);

  // Kawal LED biasa
  digitalWrite(LED1, sw1);
  digitalWrite(LED2, sw2);

  // Jika kedua-dua switch ditekan
  if (sw1 && sw2) {

    setColor(1,0,0); // Merah
    delay(500);

    setColor(0,1,0); // Hijau
    delay(500);

    setColor(0,0,1); // Biru
    delay(500);

    setColor(1,1,0); // Kuning
    delay(500);

    setColor(1,0,1); // Ungu
    delay(500);

    setColor(0,1,1); // Cyan
    delay(500);

    setColor(1,1,1); // Putih
    delay(500);
  }
  else {
    // RGB OFF
    setColor(0,0,0);
  }
}

void setColor(bool r, bool g, bool b) {
  digitalWrite(RED, r);
  digitalWrite(GREEN, g);
  digitalWrite(BLUE, b);
}

7. Upload / Run the Project

1. Connect the board to your computer using USB.

2. Open the code in Arduino IDE.

3. Select the correct board.

4. Select the correct port.

5. Click Upload.

6. Open the Serial Monitor if needed.

8. Expected Result

When the project is working correctly:

• Press Switch 1 → LED 1 turns ON.

• Press Switch 2 → LED 2 turns ON.

• Press both Switch 1 and Switch 2 → RGB LED changes colors automatically.

9. Troubleshooting