How to make Smart Dustbin for your home

1#include <Servo.h>
2
3Servo servoMain; // Define our Servo
4
5int  trigpin = 10;
6
7int echopin = 11;
8
9int distance;
10
11float duration;
12
13float  cm;
14
15void setup()
16
17{
18
19servoMain.attach(9); // servo on digital  pin 10
20
21pinMode(trigpin, OUTPUT);
22
23pinMode(echopin, INPUT);
24
25}
26
27void  loop()
28
29{
30
31digitalWrite(trigpin, LOW);
32
33delay(2);
34
35digitalWrite(trigpin,  HIGH);
36
37delayMicroseconds(10);
38
39digitalWrite(trigpin, LOW);
40
41duration  = pulseIn(echopin, HIGH);
42
43cm = (duration/58.82);
44
45distance = cm;
46
47if(distance<30)
48
49{
50
51servoMain.write(180);  // Turn Servo back to center position (90 degrees)
52
53delay(3000);
54
55}
56
57else{
58
59servoMain.write(0);
60
61delay(50);
62
63}
64
65}