Arduino

const int BuzzersA = 13;
const int BuzzersB = 12;
const int BuzzersC = 11;
const int BuzzersD = 10;

const int Sensor = 2;
const int ResetButton = 4;

int CurrentSensorState = 0; //CurrentSensorState
int LastSensorState = 0;    //LastSensorState

int startVibrating = 0; // the moment the vibration was started
int endVibrating = 0;   // the moment the vibration was stoped
int VibTime = 0;    // how long the vibration lasted
int idleTime = 0;   // how long the sensor was idle

int seconds = 0;
int minutes = 0;

void setup()
{
    Serial.begin(9600);

    pinMode(BuzzersA, OUTPUT);
    pinMode(BuzzersB, OUTPUT);
    pinMode(BuzzersC, OUTPUT);
    pinMode(BuzzersD, OUTPUT);

    pinMode(Sensor, INPUT);
    pinMode(ResetButton, INPUT);
}

void loop()
{
    CurrentSensorState = digitalRead(Sensor);

    if (CurrentSensorState != LastSensorState)
    {
        updateState();
    }
    else
    {
        updateCounter();    // sensor state not changed. It runs in a loop.
    }

    LastSensorState = CurrentSensorState;
}

void updateState()
{
    // the vibration has been just started
    if (CurrentSensorState == HIGH)
    {
        startVibrating = millis();
        idleTime = startVibrating - endVibrating;
        //Serial.print("Idled Time: ");
        //Serial.println(idleTime);
    }
    else
    {
        endVibrating = millis();
        VibTime = endVibrating - startVibrating;
        //Serial.print("Vibrated Time: ");
        //Serial.println(VibTime);
    }
}

void updateCounter()
{
    // the vibration is still occuring
    if (CurrentSensorState == HIGH)
    {
        VibTime = millis() - startVibrating;
        Serial.print("Vibrating Time: ");
        seconds = VibTime / 1000;
        minutes = seconds / 60;
        //Serial.println(VibTime / 100);

        if (seconds >= 30)
        {
            BuzzersAB_On();
        }

        if (minutes >= 5)
        {
            BuzzersCD_On();
        }
    }
    else
    {
        idleTime = millis() - endVibrating;
        if (digitalRead(ResetButton) == HIGH)
        {
            Buzzers_Off();
            Serial.println("Reset ...");
        }
        delay(3000);

        //Serial.print("Idling Time: ");
        //Serial.println(idleTime);
    }
}

void BuzzersAB_On()
{
    //tone(BuzzersAB, 500);
    digitalWrite(BuzzersA, HIGH);
    digitalWrite(BuzzersB, HIGH);
    return;
}

void BuzzersCD_On()
{
    //tone(BuzzersCD, 500);
    digitalWrite(BuzzersC, HIGH);
    digitalWrite(BuzzersD, HIGH);
    return;
}

void Buzzers_Off()
{
    digitalWrite(BuzzersA, LOW);
    digitalWrite(BuzzersB, LOW);
    digitalWrite(BuzzersC, LOW);
    digitalWrite(BuzzersD, LOW);
    return;
}

/*
bool isReset(void){
    return (digitalRead(ResetButton) == HIGH) ? true : false;
}
*/