GirlsWhoCode/RGBLED_BeginnerArduino_Full.ino at main · samnperry/GirlsWhoCode · GitHub

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////////////////////////////////
// Intro to Arduino Workshop  //
// RGBLED Color Editor        //
// Engineering Design Center  //
// University of Arizona      //
// Full Code                  //
// Rev: 11-15-24              //
////////////////////////////////

// Define LED Pins
#define redLED   5
#define blueLED  6
#define greenLED 7
#define redRGB   9
#define blueRGB  10
#define greenRGB 11

// Define Button Pins
#define buttonRed   2
#define buttonBlue  3
#define buttonGreen 4

//Pot Pin
#define potPin A0

//Variables instantiation
int redBrightness   = 0;
int blueBrightness  = 0;
int greenBrightness = 0;
int activeLED = 0;  // 0 - None, 1 - Red, 2 - Blue, 3 - Green


void setup() {
  // put your setup code here, to run once:

  // Set the pin mode to input with a pullup resistor to 5V for each button pin
  pinMode(buttonRed,   INPUT_PULLUP);
  pinMode(buttonBlue,  INPUT_PULLUP);
  pinMode(buttonGreen, INPUT_PULLUP);

  // Set the LED pins as outputs
  pinMode(redLED,   OUTPUT);
  pinMode(blueLED,  OUTPUT);
  pinMode(greenLED, OUTPUT);
  pinMode(redRGB,   OUTPUT);
  pinMode(blueRGB,  OUTPUT);
  pinMode(greenRGB, OUTPUT);

  //Start serial connection
  Serial.begin(9600);
}


void loop() {
  // put your main code here, to run repeatedly:

  //Poll the buttons and assign the activeLED
  if (digitalRead(buttonRed) == LOW){     //Because of the pullup resistor the button is grounded (LOW) when pressed
    activeLED = 1;                        //Set active LED to Red(1) when button is pressed
  }
  else if(digitalRead(buttonBlue) == LOW){
    activeLED = 2;                        //Set active LED to Blue(2) when button is pressed
  }
  else if(digitalRead(buttonGreen) == LOW){
    activeLED = 3;                        //Set active LED to Green(3) when button is pressed
  }

  /*//Print values to the Serial Monitor for debugging
    Serial.print("Active LED: "); Serial.print(activeLED);   Serial.print("\n");
    Serial.print("Button 1: "); Serial.print(digitalRead(buttonRed));   Serial.print("\n");
    Serial.print("Button 2: "); Serial.print(digitalRead(buttonBlue));  Serial.print("\n");
    Serial.print("Button 3: "); Serial.print(digitalRead(buttonGreen)); Serial.print("\n");
    Serial.println();
    delay(500);
  //*/


  //Turn on the indicator LEDs acordingly
  switch(activeLED){
    case 1: //Red
      digitalWrite(redLED, HIGH);
      digitalWrite(blueLED, LOW);
      digitalWrite(greenLED, LOW);

      redBrightness = analogRead(potPin);     //Read value from potentiometer
      analogWrite(redRGB, redBrightness / 4); //Set color brightness
      break;

    case 2: //Blue
      digitalWrite(redLED, LOW);
      digitalWrite(blueLED, HIGH);
      digitalWrite(greenLED, LOW);

      blueBrightness = analogRead(potPin);      //Read value from potentiometer
      analogWrite(blueRGB, blueBrightness / 4); //Set color brightness
      break;

    case 3: //Red
      digitalWrite(redLED, LOW);
      digitalWrite(blueLED, LOW);
      digitalWrite(greenLED, HIGH);

      greenBrightness = analogRead(potPin);       //Read value from potentiometer
      analogWrite(greenRGB, greenBrightness / 4); //Set color brightness
      break;
  }

  //*/ Prints brightness values
  Serial.print("Red: ");
  Serial.print(redBrightness);
  Serial.print(",Blue: ");
  Serial.print(blueBrightness);
  Serial.print(",Green: ");
  Serial.println(greenBrightness);
  //*/

}