#define LED 8
#define SWITCHER 7
#define dash 1000
#define point 500
#define stop 501

void setup(){
    pinMode(LED,OUTPUT);
    pinMode(SWITCHER, INPUT);

}

void loop(){
    bool signal_sos = digitalRead(SWITCHER);
    if (signal_sos == HIGH){
        int count = 0;
        while (count!=3){
            digitalWrite(LED,HIGH);
            delay(point);
            digitalWrite(LED,LOW);
            delay(stop);
            count++;
        }
        count = 0;
        while(count!=3){
            digitalWrite(LED,HIGH);
            delay(dash);
            digitalWrite(LED,LOW);
            delay(stop);
            count++;
        }
        count = 0;
        while (count!=3){
            digitalWrite(LED,HIGH);
            delay(point);
            digitalWrite(LED,LOW);
            delay(stop);
            count++;
        }
    }
    else{
        digitalWrite(LED,LOW);
    }
}