View difference between Paste ID: xCknYfe5 and 2LcRqmCr

 #define START 2
 #define RELAY 3
 #define MAIN_ON 4
 #define HEAT_ON 5
 #define BUZZER  6
 
 unsigned long timeOn = millis(), startTime = 1000;
 bool risingEdge = false;
 
 void setup() {
   Serial.begin(9600);
   Serial.println("START");
   pinMode(START, INPUT_PULLUP);
   pinMode(RELAY, OUTPUT);
   pinMode(MAIN_ON, OUTPUT);
   pinMode(HEAT_ON, OUTPUT);
   pinMode(BUZZER, OUTPUT);
   digitalWrite(HEAT_ON, HIGH);
   digitalWrite(MAIN_ON, HIGH);
   digitalWrite(BUZZER, LOW);
 }
 
 void loop() {
   if((digitalRead(START) == LOW) && (!risingEdge)){
     risingEdge = true;
     delay(100);               // Semplice antirimbalzo dello switch
     // Con il potenziometro imposti un tempo compreso tra 2 e 20 secondi
     timeOn = map(analogRead(A0), 0, 1023, 500, 7000);
 
     startTime = millis();
     Serial.print("Start delay timer of ");
     Serial.print(timeOn/1000);
     Serial.println(" seconds.");
   }
 
 
   if((millis() - startTime <= timeOn) && risingEdge){
     digitalWrite(RELAY, LOW);
     digitalWrite(HEAT_ON, HIGH);
   }
-    if(digitalRead(START) == HIGH)
+
-      risingEdge = false;
+
     digitalWrite(HEAT_ON, LOW);
 	for(int i=0; i<2; i++){
 		digitalWrite(BUZZER, HIGH);
-  // Se non necessario, rimuovi queste righe
+		delay(1000);
-  ////////////////////////////////////////
+		digitalWrite(BUZZER, LOW);
 		delay(500);
 	}
   }
 
   // Facciamo in modo che a barra alzata l'uscita venga forzata OFF senza attendere il tempo necessario
-  ////////////////////////////////////////
+
     digitalWrite(RELAY, HIGH);
     digitalWrite(HEAT_ON, LOW);
     risingEdge = false;
   }
 
 }