STEM birthday code

MISSION-2.ino

// www.elegoo.com
// 2016.12.8

// Define Pins
#define BLUE 3
#define GREEN 5
#define RED 6

void setup()
{
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
  digitalWrite(RED, HIGH);
  digitalWrite(GREEN, LOW);
  digitalWrite(BLUE, LOW);
}

// define variables
int redValue;
int greenValue;
int blueValue;

// main loop
void loop()
{
  #define delayTime 10 // fading time between colors

  redValue = 255; // choose a value between 1 and 255 to change the color.
  greenValue = 0;
  blueValue = 0;

  // this is unnecessary as we've either turned on RED in SETUP
  // or in the previous loop ... regardless, this turns RED off
  // analogWrite(RED, 0);
  // delay(1000);

  for (int i = 0; i < 255; i += 1) // fades out red bring green full when i=255
  {
    redValue -= 1;
    greenValue += 1;
    // The following was reversed, counting in the wrong directions
    // analogWrite(RED, 255 - redValue);
    // analogWrite(GREEN, 255 - greenValue);
    analogWrite(RED, redValue);
    analogWrite(GREEN, greenValue);
    delay(delayTime);
  }

  redValue = 0;
  greenValue = 255;
  blueValue = 0;

  for (int i = 0; i < 255; i += 1) // fades out green bring blue full when i=255
  {
    greenValue -= 1;
    blueValue += 1;
    // The following was reversed, counting in the wrong directions
    // analogWrite(GREEN, 255 - greenValue);
    // analogWrite(BLUE, 255 - blueValue);
    analogWrite(GREEN, greenValue);
    analogWrite(BLUE, blueValue);
    delay(delayTime);
  }

  redValue = 0;
  greenValue = 0;
  blueValue = 255;

  for (int i = 0; i < 255; i += 1) // fades out blue bring red full when i=255
  {
    // The following code has been rearranged to match the other two similar sections
    blueValue -= 1;
    redValue += 1;
    // The following was reversed, counting in the wrong directions
    // analogWrite(BLUE, 255 - blueValue);
    // analogWrite(RED, 255 - redValue);
    analogWrite(BLUE, blueValue);
    analogWrite(RED, redValue);
    delay(delayTime);
  }
}

MISSION-3.ino

//www.elegoo.com
//2023.05.06

int buzzer = 12;//the pin of the active buzzer
void setup()
{
  pinMode(buzzer, OUTPUT); //initialize the buzzer pin as an output
}
void loop()
{
  int sound_duration = 500;
  for (int i = 0; i < 20; i++)
  {
    //use the if function to gradually shorten the interval of the sound
    if (i < 5)
    {
      sound_duration = 500;
    } else if (i < 10)
    {
      sound_duration = 300;
    } else if (i < 20)
    {
      sound_duration = 100;
    }
    //activate the active buzzer
    digitalWrite(buzzer, HIGH);
    delay(sound_duration);//wait for sound_duration ms
    //deactivate the active buzzer
    digitalWrite(buzzer, LOW);
    delay(sound_duration);//wait for sound_duration ms
  }
  //activate the active buzzer
  digitalWrite(buzzer, HIGH);
  delay(5000);//keep playing sound for 5 seconds.
}

MISSION-4.ino

//www.elegoo.com
//2016.12.08

int ledPin = 5;
int buttonApin = 9;
int buttonBpin = 8;

byte leds = 0;

void setup() 
{
  pinMode(ledPin, OUTPUT);
  pinMode(buttonApin, INPUT_PULLUP);  
  pinMode(buttonBpin, INPUT_PULLUP);  
}

void loop() 
{
  if (digitalRead(buttonApin) == LOW)
  {
    digitalWrite(ledPin, HIGH);
  }
  if (digitalRead(buttonBpin) == LOW)
  {
    digitalWrite(ledPin, LOW);
  }
}

MISSION-5.ino

int tiltPin = 2;
int buzzerPin = 12;

void setup() {
  pinMode(tiltPin, INPUT_PULLUP);
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  if (digitalRead(tiltPin) == LOW) {
    digitalWrite(buzzerPin, HIGH);
  } else {
    digitalWrite(buzzerPin, LOW);
  }
}