ArduinoCode

// iturnknobs MIDIclothes

#include <MIDI.h>

// Create a MIDI instance
MIDI_CREATE_DEFAULT_INSTANCE();

// Piezo input pins (A7 to A2)
const int piezoPins[] = {A7, A6, A5, A4, A3, A2};
const int numPiezos = sizeof(piezoPins) / sizeof(piezoPins[0]);

// MIDI note numbers for each piezo (can be changed to fit your drum setup)
const int midiNotes[] = {36, 38, 42, 46, 49, 51};  // Kick, Snare, Hi-hat1, Hi-hat2, Crash, Bell

// Sensitivity and threshold settings for piezo triggering
int sensitivity[] = {1023, 1023, 1023, 1023, 1023, 1023}; // Adjust sensitivity (1 to 1023) for each piezo
int threshold[] = {50, 50, 50, 50, 50, 50};         // Minimum value to trigger the note

// Variables for hit detection
int peakValue[numPiezos] = {0};
bool hitDetected[numPiezos] = {false};

// Debounce time in milliseconds
const int debounceTime = 150;  // Adjust debounce time as needed

// Variables to track the last time each piezo triggered
unsigned long lastHitTime[numPiezos] = {0};  // Track the last hit time for each piezo

void setup() {
  // Initialize MIDI over serial communication
  MIDI.begin(MIDI_CHANNEL_OMNI); // Initialize MIDI communication (for all channels)
  Serial.begin(115200);           // Start serial communication
}

void loop() {
  for (int i = 0; i < numPiezos; i++) {
    int piezoValue = analogRead(piezoPins[i]);  // Read the analog value from the piezo

 // Check if the piezo value exceeds the threshold (trigger point)
    // and if enough time has passed since the last trigger (debounce)
    if (piezoValue > threshold[i] && (millis() - lastHitTime[i]) > debounceTime) {
      lastHitTime[i] = millis();  // Update the last hit time to the current time
      hitDetected[i] = true;
      if (piezoValue > peakValue[i]) {
        peakValue[i] = piezoValue;  // Store the peak value
      }
    } else if (hitDetected[i]) {
      // Send MIDI note on with the velocity value
      int velocity = map(peakValue[i], threshold[i], sensitivity[i], 1, 127);
      MIDI.sendNoteOn(midiNotes[i], velocity, 1);
      delay(10);  // Prevent retriggering too quickly
      MIDI.sendNoteOff(midiNotes[i], 0, 1);

      peakValue[i] = 0;  // Reset for the next hit
      hitDetected[i] = false;
    }
  }
}