ESP32-S3 - BLE MIDI controller | Help with code

[nteflgrnt]

Hi There,

I'm building a bluetooth midi controller using my ESP32-S3 board- spoiler alert, I am a hobbyist so my knowledge is limited at best.

The controller I'm building needs to send midi signal from 2x buttons, 2x B10K potentiometers and 2x rotary encoders. So far I have managed to get the bluetooth midi connection working fine and the 2 buttons are sending midi over bluetooth successfully, but I'm completely at a loss on how to code the pots and the rotary encoders. Could anyone assist me with this?

BOARD USED: ESP32-S3

POT1 PIN: 4
POT2 PIN: 5

BUTTON1 PIN: 6
BUTTON2 PIN: 7

ROTARY1a PIN: 15
ROTARY1b PIN: 16

ROTARY2a PIN: 17
ROTARY2b PIN: 18

Any help would be massively appreciated!

Here's my current code that includes the 2x buttons:

`#include <BLEMIDI_Transport.h>
#include <hardware/BLEMIDI_ESP32.h>

//BLEMIDI_CREATE_DEFAULT_INSTANCE()
BLEMIDI_CREATE_INSTANCE("FAM_INSTRUMENT", MIDI)

const int btnPin1 = 6;
const int btnPin2 = 7;

int midiNote;
int btnState;
int lastBtnState;

void setup() {
pinMode(btnPin1, INPUT_PULLUP);
pinMode(btnPin2, INPUT_PULLUP);

MIDI.begin();

}

void loop() {

lastBtnState = btnState;
btnState = digitalRead(btnPin1);

if(lastBtnState == 1 && btnState == 0){
MIDI.sendNoteOn(60, 127, 1);
delay(50);
}

else if(lastBtnState == 0 && btnState == 1){
MIDI.sendNoteOff(60, 0, 1);
delay(150);

}

lastBtnState = btnState;
btnState = digitalRead(btnPin2);

if(lastBtnState == 1 && btnState == 0){
MIDI.sendNoteOn(70, 127, 1);
delay(50);
}

else if(lastBtnState == 0 && btnState == 1){
MIDI.sendNoteOff(70, 0, 1);
delay(150);

}
}`

Thank you so much in advance for anyone taking the time to look at this and help me :)

[pruttelherrie]

Hi,

For the pots have a look here on the basics: https://docs.arduino.cc/learn/electronics/potentiometer-basics/

For the encoders it depends on what you want to do. There exist easy to us libraries for reading the encoders and then you could send CC's etc?