How to control servo motor with ultrasonic Sensor using Arduino

 How to control servo motor with ultrasonic Sensor using Arduino

Arduino tutorial #5

This is the the Circut diagram of this tutorial

This is the code of this tutorial

#include <Servo.h>

Servo servo1;

int trigPin = 9;

int echoPin = 8;

long distance;

long duration;

void setup() 

{

servo1.attach(7); 

 pinMode(trigPin, OUTPUT);

 pinMode(echoPin, INPUT);

}

void loop()

{

  ultra_sonic();

  servo1.write(90);

  if(distance <=9)

  {

  servo1.write(270);

  }

}

void ultra_sonic()

{

  digitalWrite(trigPin, LOW);

  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);

  distance = duration*0.034/2;

  }

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