Color Wheel
Description
A color wheel attached to th DC motor and a pot to control the speed. Music also played from speakers that picked up in tempo the faster the wheel spun
Components
Breadboard
Arduino Microcontroller
Resistors
1 Pot
1 Piezo Speaker
Paper for disc
Code
/*
* I modfied this code to have music. When the motor speeds up, both the disc's spin and the song, Blue *Danube Waltz speeds up.
* one pot fades one motor
* modified version of AnalogInput
* by DojoDave <http://www.0j0.org>
* http://www.arduino.cc/en/Tutorial/AnalogInput
* Modified again by dave
* Middle C = C4
*
* note frequency period PW (timeHigh)
* c3 (C) 139 hz 3597
* d3 (D) 147 hz 3401
* e3 (E) 165 hz 3030
* f3 (F) 174 hz 2907
* g3 (G) 196 hz 2551
* a3 (A) 220 hz 2273
* b3 (B) 245 hz 2041
* c4 261 Hz 3830 1915
* d4 294 Hz 3400 1700
* dSharp 311 Hz 1607
* e4 329 Hz 3038 1519
* f4 349 Hz 2864 1432
* fsharp 370 hz 1351
* g4 392 Hz 2550 1275
* a4 440 Hz 2272 1136
* b4 493 Hz 2028 1014
* c5 (Cfive) 523 Hz 1912 956
* d5 587 852
* e5 659 759
* f5 698 716
* g5 784 638
*
* (cleft) 2005 D. Cuartielles for K3
*/
int potPin = 0; // select the input pin for the potentiometer
int motorPin = 9; // select the pin for the Motor
int sensorVal = 0; // variable to store the value coming from the sensor
int speakerOut = 7;
byte names[] = {'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C'};
int tones[] = {1915, 1700, 1519, 1432, 1275, 1136, 1014, 956};
byte melody[] = "2c1p2c1p2e1p2g1p2g3p2g1p2g2p2e1p2e2p";
// count length: 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
// 10 20 30
int count = 0;
int count2 = 0;
int count3 = 0;
int MAX_COUNT = 116; // the longer the song, the longer this should be. if short, song will cut off.
void setup() {
pinMode(speakerOut, OUTPUT);
Serial.begin(9600);
}
void loop() {
sensorVal = analogRead(potPin); // read the value from the sensor, between 0 - 1024
Serial.println(sensorVal);
if (sensorVal > 0 && sensorVal <= 200 ){ //these conditions read sensor. if sensor is high, then sound is fast, else, sound is slow. Sound is normal here.
analogWrite(motorPin, 65); // if sensor val is more than 0 and less than 200, turn motor on.
for (count = 0; count < MAX_COUNT; count++) {
for (count3 = 0; count3 <= (melody[count*2] - 48) * 50; count3++) { //50 is what makes sound fast or slow
for (count2=0;count2<8;count2++) {
if (names[count2] == melody[count*2 + 1]) {
digitalWrite(speakerOut,HIGH);
delayMicroseconds(tones[count2]);
digitalWrite(speakerOut, LOW);
delayMicroseconds(tones[count2]);
}
if (melody[count*2 + 1] == 'p') {
// make a pause of a certain size
digitalWrite(speakerOut, 0);
delayMicroseconds(500);
}
}
}
}
}
else if (sensorVal > 200 && sensorVal <= 400 ){ // Sounds speed up when pot is turned.
analogWrite(motorPin, 90);
for (count = 0; count < MAX_COUNT; count++) {
for (count3 = 0; count3 <= (melody[count*2] - 48) * 30; count3++) {
for (count2=0;count2<8;count2++) {
if (names[count2] == melody[count*2 + 1]) {
digitalWrite(speakerOut,HIGH);
delayMicroseconds(tones[count2]);
digitalWrite(speakerOut, LOW);
delayMicroseconds(tones[count2]);
}
if (melody[count*2 + 1] == 'p') {
// make a pause of a certain size
digitalWrite(speakerOut, 0);
delayMicroseconds(500);
}
}
}
}
}
else if (sensorVal > 400 && sensorVal <= 600 ){ // Sounds speed up when pot is turned
analogWrite(motorPin, 100);
for (count = 0; count < MAX_COUNT; count++) {
for (count3 = 0; count3 <= (melody[count*2] - 48) * 20; count3++) {
for (count2=0;count2<8;count2++) {
if (names[count2] == melody[count*2 + 1]) {
digitalWrite(speakerOut,HIGH);
delayMicroseconds(tones[count2]);
digitalWrite(speakerOut, LOW);
delayMicroseconds(tones[count2]);
}
if (melody[count*2 + 1] == 'p') {
// make a pause of a certain size
digitalWrite(speakerOut, 0);
delayMicroseconds(500);
}
}
}
}
}
else if (sensorVal > 600 && sensorVal <= 800 ){ // Sounds speed up when pot is turned
analogWrite(motorPin, 105);
for (count = 0; count < MAX_COUNT; count++) {
for (count3 = 0; count3 <= (melody[count*2] - 48) * 10; count3++) {
for (count2=0;count2<8;count2++) {
if (names[count2] == melody[count*2 + 1]) {
digitalWrite(speakerOut,HIGH);
delayMicroseconds(tones[count2]);
digitalWrite(speakerOut, LOW);
delayMicroseconds(tones[count2]);
}
if (melody[count*2 + 1] == 'p') {
// make a pause of a certain size
digitalWrite(speakerOut, 0);
delayMicroseconds(500);
}
}
}
}
}
else if (sensorVal > 800){ // Sounds speed up when pot is turned
analogWrite(motorPin, 200);
for (count = 0; count < MAX_COUNT; count++) {
for (count3 = 0; count3 <= (melody[count*2] - 48) * 5; count3++) {
for (count2=0;count2<8;count2++) {
if (names[count2] == melody[count*2 + 1]) {
digitalWrite(speakerOut,HIGH);
delayMicroseconds(tones[count2]);
digitalWrite(speakerOut, LOW);
delayMicroseconds(tones[count2]);
}
if (melody[count*2 + 1] == 'p') {
// make a pause of a certain size
digitalWrite(speakerOut, 0);
delayMicroseconds(500);
}
}
}
}
}
else if (sensorVal == 0){ // sound and motor turn off when pot val is 0 (off)
digitalWrite(speakerOut, 0);
analogWrite(motorPin, 0);
return;
}
}
