Project Pumpkin

For the 2013 Halloween Tyler hosted an Arduino + Pumpkin workshop. The goal: Make Pumpkins more awesome using an Arduino.

So far we have pummeled three SPST switches into the top of a pumpkin.

Two of them are wired up to the Arduino on pins 3 & 4.

- Switch on Pin 3 activates a light display from three LEDs attached to pins 9, 10, and 11.
- Switch on Pin 4 activates the halloween theme on a speaker connected to pins 6.
- Unwired switch doesn't do anything, yet.

Tyler wrote the code for the light display. Frank wrote the code for the halloween theme. Josh mashed it together in all the wrong ways:

// give it a name:
int led[] = {9, 10, 11};
int ledCount = 3;
int button1Pin = 3;
int button2Pin = 4;
int delayTime = 200;
int buttonState1 = 0; 
int buttonState2 = 0; 

// ######## pumpkin audio setup code ######## 

int speakerPin = 6;

int length = 10; // the number of notes
//C, F, F, C, F, F, C, F, C#, F
char notes[] = "CffCffCfcf"; // a space represents a rest
int beats[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
int tempo = 130;

void playTone(int tone, int duration) {
  for (long i = 0; i < duration * 1000L; i += tone * 2) {
    digitalWrite(speakerPin, HIGH);
    delayMicroseconds(tone);
    digitalWrite(speakerPin, LOW);
    delayMicroseconds(tone);
  }
}
//
void playNote(char note, int duration) {
  char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
  //low pitched
  int tones[] = { 890, 1700, 1519, 1432, 1275, 1136, 1014, 956 };
  //high pitched
 // int tones[] = { 590, 1400, 1219, 1132, 975, 836, 714, 656 };

  // play the tone corresponding to the note name
  for (int i = 0; i < 8; i++) {
    if (names[i] == note) {
      playTone(tones[i], duration);
    }
  }
}
// ######## end pumpkin audio setup code ######## 


void setup() {                
  // initialize the digital pin as an output.
  for (int thisPin = 0; thisPin < ledCount; thisPin++)  {
    pinMode(led[thisPin], OUTPUT);      
  }
  pinMode(button1Pin, INPUT);
  pinMode(button2Pin, INPUT);
  pinMode(speakerPin, OUTPUT);

  Serial.begin(9600);
}

void loop() {
//  buttonState1 = digitalRead(button1Pin);
//  buttonState2 = digitalRead(button2Pin);

  Serial.print("B1");
  Serial.print(buttonState1 && ";");
  Serial.print("\t");
  Serial.print("B2");
  Serial.println(buttonState2 && ";");
  if (buttonState1 == HIGH) {    
    for (int thisPin = 0; thisPin < ledCount; thisPin++) {
      digitalWrite(led[thisPin], HIGH);  
      delay(delayTime);
      digitalWrite(led[thisPin], LOW);    
    }
    for (int thisPin = ledCount - 1; thisPin >= 0; thisPin--) {
      digitalWrite(led[thisPin], HIGH);
      delay(delayTime);
      digitalWrite(led[thisPin], LOW);
    }
  } else {
    for (int thisPin = 0; thisPin < ledCount; thisPin++) {
      digitalWrite(led[thisPin], LOW);    
    }
  }
  
  if (buttonState2 == HIGH){
      for (int i = 0; i < length; i++) {
    if (notes[i] == ' ') {
      delay(beats[i] * tempo); // rest
    } else {
      playNote(notes[i], beats[i] * tempo);
    }

    // pause between notes
    delay(tempo / 2); 
  }
  }
}