Completed Circuit Demo Video:
Completed Code:
int blueLed = 7; // make variable for each of the components on the breadboard
int greenLed = 8;
int whiteLed = 9;
int yellowLed = 10;
int buttonPin1 = 33;
int buttonPin2 = 34;
int buttonPin3 = 35;
int buttonPin4 = 36;
int potValue = 0;
int slideSwitch = 32;
void setup() {
pinMode(blueLed, OUTPUT); // set pinMode for the digital inputs
pinMode(greenLed, OUTPUT);
pinMode(whiteLed, OUTPUT);
pinMode(yellowLed, OUTPUT);
pinMode(buttonPin1, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(buttonPin3, INPUT);
pinMode(buttonPin4, INPUT);
pinMode(slideSwitch, INPUT);
}
void loop() {
if (digitalRead(slideSwitch) == HIGH) { //keyboard setting
keyboardMode();
}
if (digitalRead(slideSwitch) == LOW) { //arpeggio setting
arpeggioMode();
}
}
void checkButton1() { // checkbutton1 function
if (digitalRead(buttonPin1) == HIGH) {
usbMIDI.sendNoteOn(60, 127, 1);
digitalWrite(blueLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(60, 0, 1);
digitalWrite(blueLed, LOW);
delay(500);
}
}
void checkButton2() { // checkbutton2 function
if (digitalRead(buttonPin2) == HIGH) {
usbMIDI.sendNoteOn(64, 127, 1);
digitalWrite(greenLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(64, 0, 1);
digitalWrite(greenLed, LOW);
delay(500);
}
}
void checkButton3() { // checkbutton3 function
if (digitalRead(buttonPin3) == HIGH) {
usbMIDI.sendNoteOn(67, 127, 1);
digitalWrite(whiteLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(67, 0, 1);
digitalWrite(whiteLed, LOW);
delay(500);
}
}
void checkButton4() { // checkbutton4 function
if (digitalRead(buttonPin4) == HIGH) {
usbMIDI.sendNoteOn(71, 127, 1);
digitalWrite(yellowLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(71, 0, 1);
digitalWrite(yellowLed, LOW);
delay(500);
}
}
void keyboardMode() { //keyboardMode function
checkButton1();
checkButton2();
checkButton3();
checkButton4();
}
void arpeggio(int note) { // arpeggio function
potValue = analogRead(A18);
usbMIDI.sendNoteOn(note, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note, 0, 1);
usbMIDI.sendNoteOn(note + 4, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note + 4, 0, 1);
usbMIDI.sendNoteOn(note + 7, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note + 7, 0, 1);
usbMIDI.sendNoteOn(note + 11, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note + 11, 0, 1);
}
void arpeggioMode() { //arpeggioMode function
if (digitalRead(buttonPin1) == HIGH) {
arpeggio(60);
}
if (digitalRead(buttonPin2) == HIGH) {
arpeggio(64);
}
if (digitalRead(buttonPin3) == HIGH) {
arpeggio(67);
}
if (digitalRead(buttonPin4) == HIGH) {
arpeggio(71);
}
}
Demo Song:
I decided I would try out the MIDI controller and try to make a quick song idea! Here’s what I came up with:
Extra Credit:
This took me forever, so I hope it’s right!
Extra Credit Code:
int blueLed = 7; // make variable for each of the components on the breadboard
int greenLed = 8;
int whiteLed = 9;
int yellowLed = 10;
int buttonPin1 = 33;
int buttonPin2 = 34;
int buttonPin3 = 35;
int buttonPin4 = 36;
int potValue = 0;
int slideSwitch = 32;
int slideSwitch2 = 31;
void setup() {
pinMode(blueLed, OUTPUT); // set pinMode for the digital inputs
pinMode(greenLed, OUTPUT);
pinMode(whiteLed, OUTPUT);
pinMode(yellowLed, OUTPUT);
pinMode(buttonPin1, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(buttonPin3, INPUT);
pinMode(buttonPin4, INPUT);
pinMode(slideSwitch, INPUT);
pinMode(slideSwitch2, INPUT);
}
void loop() {
if (digitalRead(slideSwitch) == HIGH) { //keyboard setting
keyboardMode();
}
if (digitalRead(slideSwitch) == LOW) { //arpeggio setting
arpeggioMode();
}
}
void checkButton1() { // checkbutton1 function
if (digitalRead(buttonPin1) == HIGH and digitalRead(slideSwitch2) == LOW) {
usbMIDI.sendNoteOn(60, 127, 1);
digitalWrite(blueLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(60, 0, 1);
digitalWrite(blueLed, LOW);
delay(500);
}
if (digitalRead(buttonPin1) == HIGH and digitalRead(slideSwitch2) == HIGH) {
usbMIDI.sendNoteOn(72, 127, 1);
digitalWrite(blueLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(76, 0, 1);
digitalWrite(blueLed, LOW);
delay(500);
}
}
void checkButton2() { // checkbutton2 function
if (digitalRead(buttonPin2) == HIGH and digitalRead(slideSwitch2) == LOW) {
usbMIDI.sendNoteOn(64, 127, 1);
digitalWrite(greenLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(64, 0, 1);
digitalWrite(greenLed, LOW);
delay(500);
}
if (digitalRead(buttonPin2) == HIGH and digitalRead(slideSwitch2) == HIGH) {
usbMIDI.sendNoteOn(76, 127, 1);
digitalWrite(greenLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(76, 0, 1);
digitalWrite(greenLed, LOW);
delay(500);
}
}
void checkButton3() { // checkbutton3 function
if (digitalRead(buttonPin3) == HIGH and digitalRead(slideSwitch2) == LOW) {
usbMIDI.sendNoteOn(67, 127, 1);
digitalWrite(whiteLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(67, 0, 1);
digitalWrite(whiteLed, LOW);
delay(500);
}
if (digitalRead(buttonPin3) == HIGH and digitalRead(slideSwitch2) == HIGH) {
usbMIDI.sendNoteOn(79, 127, 1);
digitalWrite(whiteLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(79, 0, 1);
digitalWrite(whiteLed, LOW);
delay(500);
}
}
void checkButton4() { // checkbutton4 function
if (digitalRead(buttonPin4) == HIGH and digitalRead(slideSwitch2) == LOW) {
usbMIDI.sendNoteOn(71, 127, 1);
digitalWrite(yellowLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(71, 0, 1);
digitalWrite(yellowLed, LOW);
delay(500);
}
if (digitalRead(buttonPin4) == HIGH and digitalRead(slideSwitch2) == HIGH) {
usbMIDI.sendNoteOn(83, 127, 1);
digitalWrite(yellowLed, HIGH);
delay(500);
usbMIDI.sendNoteOff(83, 0, 1);
digitalWrite(yellowLed, LOW);
delay(500);
}
}
void keyboardMode() { //keyboardMode function
checkButton1();
checkButton2();
checkButton3();
checkButton4();
}
void arpeggio(int note) { // arpeggio function
potValue = analogRead(A18);
usbMIDI.sendNoteOn(note, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note, 0, 1);
usbMIDI.sendNoteOn(note + 4, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note + 4, 0, 1);
usbMIDI.sendNoteOn(note + 7, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note + 7, 0, 1);
usbMIDI.sendNoteOn(note + 11, 127, 1);
delay(potValue);
usbMIDI.sendNoteOff(note + 11, 0, 1);
}
void arpeggioMode() { //arpeggioMode function
if (digitalRead(buttonPin1) == HIGH and digitalRead(slideSwitch2) == LOW) {
arpeggio(60);
}
if (digitalRead(buttonPin1) == HIGH and digitalRead(slideSwitch2) == HIGH) {
arpeggio(72);
}
if (digitalRead(buttonPin2) == HIGH and digitalRead(slideSwitch2) == LOW) {
arpeggio(64);
}
if (digitalRead(buttonPin2) == HIGH and digitalRead(slideSwitch2) == HIGH) {
arpeggio(76);
}
if (digitalRead(buttonPin3) == HIGH and digitalRead(slideSwitch2) == LOW) {
arpeggio(67);
}
if (digitalRead(buttonPin3) == HIGH and digitalRead(slideSwitch2) == HIGH) {
arpeggio(79);
}
if (digitalRead(buttonPin4) == HIGH and digitalRead(slideSwitch2) == LOW) {
arpeggio(71);
}
if (digitalRead(buttonPin4) == HIGH and digitalRead(slideSwitch2) == HIGH) {
arpeggio(83);
}
}
Sarah's Analog Electronics Lab Reports 