Music Machine

I was tasked with designing a music machine using Processing and an ESP32 board. A part of the brief was also designing a casing for the machine.

I decided to create a drum pad that would create sound by the press of a button. Unfortunately, this was much harder than expected. After multiple bugs in my code and problems with the board its self I wasn't able to make the machine work.

This doesn't mean time was wasted though. From this I have discovered how drum pads are designed and grew a better understanding of Processing.

Processing Code:

import processing.serial.*;

import processing.sound.*;

SoundFile[] myDrums = new SoundFile[4];

Serial myConnection;

String serialValues = "''';

float bassBtnStateCurrent;

float bassBtnStatePrev;

float symbolßtnStateCurrent;

float symbolBtnStatePrev;

float float

hatBtnStateCurrent;

hatBtnStatePrev;

float leftdrumkBtnStateCurrent;

float leftdrumkBtnStatePrev;

void setup) {

size (660, 200);

myDrums [0] = new SoundFile(this, "BTOAODO.WAV");

myDrums [1] = new SoundFile(this, "CLOP4.WAV"') ;

myDrums [2] = new SoundFile(this, "HTODO.WAV") ;

myDrums [3] = new SoundFile(this, "LT7DA.WAV") ;

printArray (Serial.list());

myConnection = new Serial(this, Serial.listO (21, 9600);

myConnection.bufferUntil('\n');

// the setup function runs once when you press reset or power the board

void setup()

{

// initialize digital pin LED_BUILTIN as an output.

pinMode(LED_BUILTIN, OUTPUT);}
// the loop function runs over and over again forever

void loop() {

digitalWrite(LED_BUILTIN, HIGH);

// turn the LED on (HIGH is the voltage level)

delay(500);

// wait for a second

digitalWrite(LED_BUILTIN, LOW);

// turn the LED off by making the voltage LOW

delay(500);

// wait for a second}

}

Arduino Code:

#define BUTTON1 12

#define BUTTON2 13

#define BUTTON3 14

#define BUTTON4 15

void setup() ‹

// put your setup code here, to run once:

pinMode (BUTTON1, INPUT); pinMode (BUTTON2, INPUT); pinMode (BUTTON3, INPUT); pinMode (BUTTON4, INPUT);

Serial. begin (9600);

｝

void loop() {

// put your main code here, to run repeatedly:

// Send a value depending on the button being pressed

if (digitalRead (BUTTON1) > 0) {

Serial println("1,");

delay (200);

} else if (digitalRead (BUTTON2) > 0) {

Serial.println("2,");

de lay (200);

} else if (digitalRead (BUTTON3) > 0) {

Serial.println("3,");

delay (200);

} else if (digitalRead (BUTTON4) > 0) 1

Serial-println("4,"); delay (200);

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