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Скачал код (https://github.com/fb39ca4/kappa-pad)
Следовал инструкции, но кнопки z и x всегда нажаты

Не могу понять в чем проблем, помогите плз
 

#include <CapacitiveSensor.h>
#include <Keyboard.h>

#include "capacitiveKey.h"

//#define SERIAL_OUTPUT
#define DISABLE_PIN 15

void setup() {
  #ifdef SERIAL_OUTPUT
  Serial.begin(115200);
  #endif
  Keyboard.begin();
  pinMode(DISABLE_PIN, INPUT_PULLUP);
}

CapacitiveKey key0 = CapacitiveKey(
  2,    //Capacitive Send Pin
  7,    //Capacitive Sense Pin
  6,    //LED Pin
  6,    //Capacitive Treshold
  'z',  //Keyboard Key
  255   //LED Brightness (0-255)
);
CapacitiveKey key1 = CapacitiveKey(
  4,    //Capacitive Send Pin
  8,    //Capacitive Sense Pin
  10,   //LED Pin
  5,    //Capacitive Treshold
  'x',  //Keyboard Key
  255   //LED Brightness (0-255)
);

void loop() {
  bool keyboardActive = digitalRead(DISABLE_PIN);
  key0.keyUpdate(keyboardActive);
  key1.keyUpdate(keyboardActive);

  #ifdef SERIAL_OUTPUT
  Serial.print(key0.sample);
  Serial.print(",");
  Serial.println(key1.sample);
  #endif
}

class CapacitiveKey {
  public:
    CapacitiveSensor* sensor;
    bool keyReleased = true;
    char key;
    unsigned int releaseDelay = 20;
    unsigned int releaseTimer;
    unsigned int treshold;  
    int led;
    unsigned int sample;
    unsigned char ledBrightness;
    CapacitiveKey(uint8_t sendPin, uint8_t receivePin, int statusLED, unsigned int capacitiveTreshold, char keyboardKey, unsigned char ledBrightness)  {
      sensor = new CapacitiveSensor(sendPin, receivePin);
      treshold = capacitiveTreshold;
      key = keyboardKey;
      led = statusLED;
      pinMode(led, OUTPUT);
    }
    ~CapacitiveKey() {
      delete sensor;
    }
    void keyUpdate(bool keyboardActive) {
      sample = sensor->capacitiveSensorRaw(1);
      if (sample > treshold) {
        if (keyReleased) {
          analogWrite(led, 255);
          if (keyboardActive) Keyboard.press(key);
          keyReleased = false;
        }
        releaseTimer = releaseDelay;
      }
      else {
        if (!keyReleased) {
          if (releaseTimer == 0) {
            analogWrite(led, 0);
            Keyboard.release(key);
            keyReleased = true;
          }
          else {
            releaseTimer--;
          }
        }
      }
    }
};