diff --git a/src/main.cpp b/src/main.cpp
index 3c3c7e9..a0f2401 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,5 @@
 #include <Tone32.h>
 #include <NeoPixelBus.h>
-#include "Button2.h"
 
 #define BUZZER_PIN 5
 #define BUZZER_CHANNEL 0
@@ -10,6 +9,7 @@ const uint8_t DotDataPin = 14;
 
 #define colorSaturation 128
 #define MAX_ITER 2000000
+#define IMPULS 400 //400 ms impuls minimal
 // for software bit bang
 NeoPixelBus<NeoGrbFeature, Neo800KbpsMethod> strip(PixelCount, DotDataPin);
 // for hardware SPI (best performance but must use hardware pins)
@@ -58,19 +58,17 @@ static RgbColor LEDoffColor;
 
 RgbColor rgbArray[] = {red, blue, green, white};
 
-#define BELL_PIN 12 // Pin 12 as default
-#define MINIMAL_GAP 30*1000 // 30 seconds between rings
-#define IMPULS 500 // minimal press of button
-
 const byte interruptPin = 17;
+volatile int interruptCounter = 0;
+int numberOfInterrupts = 0;
 
-unsigned long last_low = 0; // time of uptime
-unsigned long last_high = 0;
-unsigned long last_sended = 0;
+unsigned long one,zero;
 bool run;
 
 TaskHandle_t Task1;
-Button2 buttonBELL = Button2(17,INPUT_PULLDOWN,false,100U);
+
+
+portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;
 
 void LCD_snake()
 {
@@ -103,6 +101,7 @@ void LCD_blink_color()
 }
 
 void beep(void * pvParameters) {
+  Serial.println("Piezo core 2...");
   for (;;) {
     if (run) {
       tone(BUZZER_PIN, NOTE_C4, 500, BUZZER_CHANNEL);
@@ -124,32 +123,16 @@ void beep(void * pvParameters) {
     delay(100);
   }
 }
+ 
+void IRAM_ATTR handleInterrupt() {
 
-void change(Button2& btn) {
-  Serial.println("CHANGE");
-  if (btn.isPressed()) {
-    unsigned long pressed = millis() - last_high;
+  portENTER_CRITICAL_ISR(&mux);
 
-    if (last_high == 0) return;
-
-    Serial.print("released: ");
-    Serial.println(pressed);
-
-    if (pressed < IMPULS) {
-      Serial.println("Interval too low");
-      return;
-    }
-
-    if (millis() - last_sended < MINIMAL_GAP) {
-      Serial.println("Minimal gap not meeted");
-      return;
-    }
-
-    run = true;
-    last_sended = millis();
-  } else {
-    last_high = millis();
-  }
+  if (digitalRead(interruptPin) == HIGH) zero = millis();
+  if (digitalRead(interruptPin) == LOW) one = millis();
+  
+  interruptCounter++;
+  portEXIT_CRITICAL_ISR(&mux);
 }
 
 void setup() {
@@ -161,8 +144,11 @@ void setup() {
   strip.ClearTo(black);
   strip.Show();
 
-  Serial.println("Monitoring:");
-  buttonBELL.setChangedHandler(change);
+  one = zero = millis();
+
+  Serial.println("Monitoring interrupts: ");
+  pinMode(interruptPin, INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(interruptPin), handleInterrupt, CHANGE);
   
   xTaskCreatePinnedToCore(
              beep, /* Task function. */
@@ -177,7 +163,24 @@ void setup() {
 
 void loop() {
 
-  buttonBELL.loop();
+  if(interruptCounter>0){
+ 
+      portENTER_CRITICAL(&mux);
+      interruptCounter--;
+      portEXIT_CRITICAL(&mux);
+ 
+      numberOfInterrupts++;
+      Serial.print("An interrupt has occurred. Total: ");
+      Serial.println(numberOfInterrupts);
       
-  if (run) LCD_snake();
+      if (zero > one && zero - one > IMPULS) {
+         run = true;
+         zero = one = 0;
+      }
+      else run = false;
+      
+      if (run) LCD_snake();
+      
+  }
+  delay(100);
 }
\ No newline at end of file