void setup() {
Serial.begin(9600);
pinMode(8,OUTPUT);
pinMode(9,INPUT);
pinMode(10,OUTPUT);
pinMode(11,OUTPUT);
for (int i=2;i<=7;i++) pinMode(i,OUTPUT);
}

void loop() {
digitalWrite(8,1); delay(1);
digitalWrite(8,0);
int sure=pulseIn(9,1);
int mesafe=(sure/2)/28.97;
Serial.print("Olculen Mesafe=");
Serial.println(mesafe);
delay(1);
if(mesafe<10) digitalWrite(7,1); else digitalWrite(7,0);
if(mesafe<=10) digitalWrite(2,1); else digitalWrite(2,0);
if(mesafe<=20) digitalWrite(3,1); else digitalWrite(3,0);
if(mesafe<=40) digitalWrite(4,1); else digitalWrite(4,0);
if(mesafe<=80) digitalWrite(5,1); else digitalWrite(5,0);
if(mesafe<=100) digitalWrite(6,1); else digitalWrite(6,0);
  if(mesafe<=150) digitalWrite(10,1); else digitalWrite(10,0);
  if(mesafe<=200) digitalWrite(11,1); else digitalWrite(11,0);
}