Make Touchless ANY THING using ultrasonic sensor module

1//this project is made by Circuit Mania  https://www.youtube.com/channel/UCJPKa558LvFFYOL3zfEmJ9g?view_as=subscriber
2const  int pingPin = 7;
3//adjust this to set the min speed of wave gesture
4const  int waveBackWait = 5000;
5//Range of detection from the sensor in cm
6const  int range = 7;
7void setup() {
8  pinMode(10, OUTPUT);
9}
10void loop() {
11  long duration, cm;
12  pinMode(pingPin, OUTPUT);
13  digitalWrite(pingPin, LOW);
14  delayMicroseconds(2);
15  digitalWrite(pingPin, HIGH);
16  delayMicroseconds(5);
17  digitalWrite(pingPin, LOW);
18pinMode(pingPin, INPUT);
19  duration = pulseIn(pingPin,  HIGH);
20  
21  cm = microsecondsToCentimeters(duration);
22if(cm < range &&  cm > 1){
23    for(int i=waveBackWait; i>0; i--){
24      long new_duration, new_cm;
25      pinMode(pingPin, OUTPUT);
26      digitalWrite(pingPin, LOW);
27      delayMicroseconds(2);
28      digitalWrite(pingPin, HIGH);
29      delayMicroseconds(5);
30      digitalWrite(pingPin,  LOW);
31      pinMode(pingPin, INPUT);
32      new_duration = pulseIn(pingPin,  HIGH);
33  
34      new_cm = microsecondsToCentimeters(new_duration);
35      if(new_cm  < range && new_cm > 1){
36        //ring the doorbell
37        digitalWrite(10,HIGH);
38        delay(500);
39        digitalWrite(10,LOW);
40      }
41    }
42  }
43}
44long  microsecondsToCentimeters(long microseconds) {
45  return microseconds / 29 / 2;
46}

1//this project is made by Circuit Mania  https://www.youtube.com/channel/UCJPKa558LvFFYOL3zfEmJ9g?view_as=subscriber
2const
3  int pingPin = 7;
4//adjust this to set the min speed of wave gesture
5const
6  int waveBackWait = 5000;
7//Range of detection from the sensor in cm
8const
9  int range = 7;
10void setup() {
11  pinMode(10, OUTPUT);
12}
13void loop() {
14
15  long duration, cm;
16  pinMode(pingPin, OUTPUT);
17  digitalWrite(pingPin, LOW);
18
19  delayMicroseconds(2);
20  digitalWrite(pingPin, HIGH);
21  delayMicroseconds(5);
22
23  digitalWrite(pingPin, LOW);
24pinMode(pingPin, INPUT);
25  duration = pulseIn(pingPin,
26  HIGH);
27  
28  cm = microsecondsToCentimeters(duration);
29if(cm < range &&
30  cm > 1){
31    for(int i=waveBackWait; i>0; i--){
32      long new_duration, new_cm;
33
34      pinMode(pingPin, OUTPUT);
35      digitalWrite(pingPin, LOW);
36      delayMicroseconds(2);
37
38      digitalWrite(pingPin, HIGH);
39      delayMicroseconds(5);
40      digitalWrite(pingPin,
41  LOW);
42      pinMode(pingPin, INPUT);
43      new_duration = pulseIn(pingPin,
44  HIGH);
45  
46      new_cm = microsecondsToCentimeters(new_duration);
47      if(new_cm
48  < range && new_cm > 1){
49        //ring the doorbell
50        digitalWrite(10,HIGH);
51
52        delay(500);
53        digitalWrite(10,LOW);
54      }
55    }
56  }
57}
58long
59  microsecondsToCentimeters(long microseconds) {
60  return microseconds / 29 / 2;
61}