Arduino Trash-Bot (Auto-Open/Close Trash Bin)

1#include<Servo.h>
2Servo servo;
3int const trigPin = 6;
4int const   echoPin = 5;
5void setup()
6{
7pinMode(trigPin, OUTPUT); 
8pinMode(echoPin,   INPUT); 
9    servo.attach(3);
10}
11void loop()
12{       int duration, distance;
13digitalWrite(trigPin,   HIGH); 
14delay(1);
15digitalWrite(trigPin, LOW);
16// Measure the pulse input   in echo pin
17duration = pulseIn(echoPin, HIGH);
18// Distance is half the duration   devided by 29.1 (from datasheet)
19distance = (duration/2) / 29.1;
20// if distance   less than 0.5 meter and more than 0 (0 or less means over range) 
21if (distance   <= 50 && distance >= 0) {
22	servo.write(50);
23    delay(3000);
24} else {
25	
26	servo.write(160);
27}
28//   Waiting 60 ms won't hurt any one
29delay(60);
30}

1#include<Servo.h>
2Servo servo;
3int const trigPin = 6;
4int const  echoPin = 5;
5void setup()
6{
7pinMode(trigPin, OUTPUT); 
8pinMode(echoPin,  INPUT); 
9    servo.attach(3);
10}
11void loop()
12{       int duration, distance;
13digitalWrite(trigPin,  HIGH); 
14delay(1);
15digitalWrite(trigPin, LOW);
16// Measure the pulse input  in echo pin
17duration = pulseIn(echoPin, HIGH);
18// Distance is half the duration  devided by 29.1 (from datasheet)
19distance = (duration/2) / 29.1;
20// if distance  less than 0.5 meter and more than 0 (0 or less means over range) 
21if (distance  <= 50 && distance >= 0) {
22	servo.write(50);
23    delay(3000);
24} else {
25	
26	servo.write(160);
27}
28//  Waiting 60 ms won't hurt any one
29delay(60);
30}