Arduino servo motor with ultrasonic sensor

Arduino servo motor with ultrasonic sensor

Hardware Required

• Arduino
• Servo Motor
• Ultrasonic Sensor

Circuit

Code

///https://dreamprojectsnow.blogspot.com/
#include 
#define trigPin 9
#define echoPin 8
Servo servo;
int sound = 250;
void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
servo.attach(7);
}
void loop() {
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
if (distance < 10) {
Serial.println("the distance is less than 10");
servo.write(90);
delay(1500);
}
else {
servo.write(0);
}
if (distance > 60 || distance <= 0){
Serial.println("The distance is more than 60");
}
else {
Serial.print(distance);
Serial.println(" cm");
}
delay(500);
}