script arduino

 #include <Servo.h>

Servo servo1;

#define echoPin 3

#define trigPin 4 

int maximumRange = 200; 

int minimumRange = 0; 

long duration, distance; 

void setup() {

Serial.begin (9600); 

servo1.attach(2);

pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);

}

 

void loop() {

digitalWrite(trigPin, LOW);delayMicroseconds(2);

digitalWrite(trigPin, HIGH);delayMicroseconds(10);

digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance = duration/58.2;

Serial.print(distance); 

Serial.println (" cm ");

delay (500);

if (distance < 25)

{

servo1.write(0);

}

else

{

servo1.write(180);

}

}