int ultraSignal = 2; 
int value = 0;
int ultraValue = 0;
int timeCounter = 0; 
int led1  =  3;   
int led2  =  4; 
int led3  =  5;
int led4  =  6; 
int led5  =  7; 
int led6  =  8; 
int led7  =  9; 
int led8  =  10;
int led9  =  11;
int led10  = 12;

void setup() {
Serial.begin(9600); 
pinMode(led1 , OUTPUT);
pinMode(led2 , OUTPUT); 
pinMode(led3 , OUTPUT); 
pinMode(led4 , OUTPUT);
pinMode(led5 , OUTPUT); 
pinMode(led6 , OUTPUT); 
pinMode(led7 , OUTPUT); 
pinMode(led8, OUTPUT); 
pinMode(led9 , OUTPUT); 
pinMode(led10, OUTPUT); 
}

void loop() {
timeCounter = 0;
value = 0;
pinMode(ultraSignal, OUTPUT); 

digitalWrite(ultraSignal, LOW);
delayMicroseconds(2); 
digitalWrite(ultraSignal, HIGH); 
delayMicroseconds(5); 
digitalWrite(ultraSignal, LOW);

pinMode(ultraSignal, INPUT); 
value = digitalRead(ultraSignal); 
while(value == LOW) { 
value = digitalRead(ultraSignal);
}
while(value == HIGH) { 
value = digitalRead(ultraSignal);
timeCounter = timeCounter +1; 
}

ultraValue = timeCounter; 
ultraValue = (ultraValue / 3);

Serial.print("Distance is: "); 
Serial.print(ultraValue);
Serial.println("mm");



if(timeCounter > 0){
if (ultraValue >  10) digitalWrite(led1 , HIGH);
   else  digitalWrite(led1 , LOW);
if (ultraValue >  20) digitalWrite(led2 , HIGH);
   else  digitalWrite(led2 , LOW);
if (ultraValue >  30) digitalWrite(led3 , HIGH);
   else  digitalWrite(led3 , LOW);
if (ultraValue >  40) digitalWrite(led4 , HIGH);
   else  digitalWrite(led4, LOW);
if (ultraValue > 50) digitalWrite(led5, HIGH);
   else  digitalWrite(led5, LOW);
if (ultraValue > 60) digitalWrite(led6 , HIGH);
   else  digitalWrite(led6 , LOW);
if (ultraValue > 70) digitalWrite(led7 , HIGH);
   else  digitalWrite(led7 , LOW);
if (ultraValue > 90) digitalWrite(led8 , HIGH);
   else  digitalWrite(led8 , LOW);
if (ultraValue > 100) digitalWrite(led9 , HIGH);
   else  digitalWrite(led9, LOW);
if (ultraValue > 110) digitalWrite(led10 , HIGH);
   else  digitalWrite(led10 , LOW);

}
delay(100);
}