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Prototype code proposal

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Red(?) LED in stand
30 day timer → 720 hrs → 43,200 min → 2,592,000 sec → 2,592,000,000 milliseconds
Buzzer(?)
Figures in relief form (cut out with laser cutter and layered)

int K = (something)
int D = (something)
int S = (something)
int ledPin = 11
void setup() {
K ()
D ()
S ()

}
void loop() {
if (“K and D present”) {
Green LED
} else {

}
if (“K and S present”) {
Orange LED
}
if (“D and S present”) {
Purple LED
}
if (“K, S, and D present”) {
(Rainbow) NeoPixle LED
}
}

Stand
1 neopixel strip
1 buzzer
3 switches

BUZZER:
LOZ Chest music (when all 3 present):

/* This code is derived from:
* http://www.arduino.cc/en/Tutorial/Melody
* This plays the chest noise from the Legend of Zelda on a piezo buzzer connected to pin 9 and ground. It has been tuned to a buzzer I had on hand, but you may want to adjust the values, testing against a tuner.
*/
int speakerPin = 9;
const int switchPin = 6;
char notes[] = "gabygabyxzCDxzCDabywabywzCDEzCDEbywFCDEqywFGDEqi azbC"; // a space represents a rest
int length = sizeof(notes); // the number of notes
int beats[] = { 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 2,3,3,16,};
int tempo = 75/4;
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', 'x', 'a', 'z', 'b', 'C', 'y', 'D', 'w', 'E', 'F', 'q', 'G', 'i' };
// c=C4, C = C5. These values have been tuned.
int tones[] = { 1898, 1690, 1500, 1420, 1265, 1194, 1126, 1063, 1001, 947, 893, 843, 795, 749, 710, 668, 630, 594 };
// play the tone corresponding to the note name
for (int i = 0; i < 18; i++) {
if (names[i] == note) {
playTone((tones[i])/17, duration);
}
}
}
void setup() {
pinMode(speakerPin, OUTPUT);
pinMode(switchPin, INPUT);
digitalWrite(switchPin, HIGH);
}
void loop() {
pinMode(speakerPin, OUTPUT);
if (digitalRead(switchPin) == 1) {
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);
}
}
delay(100);
}
view raw x16 Speed (for ATtiny) hosted with ❤ by GitHub
/* This code is derived from:
* http://www.arduino.cc/en/Tutorial/Melody
* This plays the chest noise from the Legend of Zelda on a piezo buzzer connected to pin 9 and ground. It has been tuned to a buzzer I had on hand, but you may want to adjust the values, testing against a tuner.
*/
int speakerPin = 0;
const int switchPin = 1;
char notes[] = "gabygabyxzCDxzCDabywabywzCDEzCDEbywFCDEqywFGDEqi azbC"; // a space represents a rest
int length = sizeof(notes); // the number of notes
int beats[] = { 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 1,1,1,1, 2,3,3,16,};
int tempo = 75;
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', 'x', 'a', 'z', 'b', 'C', 'y', 'D', 'w', 'E', 'F', 'q', 'G', 'i' };
// c=C4, C = C5. These values have been tuned.
int tones[] = { 1898, 1690, 1500, 1420, 1265, 1194, 1126, 1063, 1001, 947, 893, 843, 795, 749, 710, 668, 630, 594 };
// play the tone corresponding to the note name
for (int i = 0; i < 18; i++) {
if (names[i] == note) {
playTone(tones[i], duration);
}
}
}
void setup() {
pinMode(switchPin, INPUT);
digitalWrite(switchPin, HIGH);
}
void loop() {
pinMode(speakerPin, OUTPUT);
if (digitalRead(switchPin) == 1) {
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);
}
}
delay(100);
}
view raw Zelda Chest Noise hosted with ❤ by GitHub

Overview of project
When 3 characters created by layering laser cut material are placed on a stand, different combinations of pressed switches result in different effects. The two types of effects are lights and sound from a neopixel strip and a buzzer. For example, if A+B are present (A and B stand for a character each) then a song AB would play and a color combination would appear on the neopixel strip.