#include <Servo.h>

int servoPin = 9;
int trigPin = 6;
int echoPin = 5;
long duration;
int distance;

Servo myServo;
bool highFiveDone = false; 

void setup() {
  myServo.attach(servoPin);
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  myServo.write(90);  
}

void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

 
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;  

  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");


  if (distance < 10 && !highFiveDone) {
   
    myServo.write(110);
    delay(300);  
    
   
    myServo.write(90);
    delay(300);
    
    highFiveDone = true;  
  }


  if (distance >= 10) {
    highFiveDone = false;
  }
}