Smart Dustbin

1/*
2  SMART DUSTBIN
3  THIS IS A CODE FOR MAKING A SMART DUSTBIN WHICH  OPENS AND CLOSES AUTOMATICALLY.
4  CODE CREATED AND EDITED BY - AMEYA ANGADI
5  LAST EDITED ON - 02/05/2021
6  IF DISTANCE IS LESS THAN 20 CM THEN LID OF DUSTBIN  IS OPENED FOR 3.5 SECONDS AND THEN CLOSED
7*/
8
9#include <Servo.h>  //INCLUDES  SERVO LIBRARY
10
11Servo servo;
12int trig = 5;
13int echo = 6;
14int servoPin  = 9;
15long duration, distance, average;
16long aver[3];
17
18void setup() {
19  Serial.begin(9600);
20  servo.attach(servoPin);
21  pinMode(trig, OUTPUT);
22  pinMode(echo, INPUT);
23  servo.write(0); //CLOSES CAP ON STARTING
24  delay(100);
25  servo.detach();
26}
27
28void measure() {
29  digitalWrite(trig, LOW);
30  delayMicroseconds(5);
31  digitalWrite(trig, HIGH);
32  delayMicroseconds(15);
33  digitalWrite(trig, LOW);
34  pinMode(echo, INPUT);
35  duration = pulseIn(echo,  HIGH);
36  distance = (duration / 2) / 29.1; //CALCULATES DISTANCE
37}
38
39void  loop() {
40  Serial.println(distance);     //CAN BE DISABLED
41  for (int i =  0; i <= 2; i++) { //CALCULATES AVERAGE DISTANCE
42    measure();
43    aver[i]  = distance;
44    delay(10);
45  }
46  distance = (aver[0] + aver[1] + aver[2])  / 3;
47
48  if ( distance <= 20 ) { //CHANGE AS PER AS NEED
49    servo.attach(servoPin);
50    delay(1);
51    servo.write(0);
52    delay(3500); //CHANGE AS PER AS NEED
53    servo.write(180);
54    delay(1500); //CHANGE AS PER AS NEED
55    servo.detach();
56  }
57}
58