Fighting Corona: Multichoice automatic hand sanitizer

1#include <Servo.h>
2int echoPin = 12;
3int trigPin = 11;
4int servoPin  = 10;
5int duration; //micro second
6float d_cm;
7int pos01=0;
8int pos02  = 100;
9Servo myServo;
10void setup() {
11
12// initialize serial communication:
13  Serial.begin(9600);
14  pinMode(trigPin,OUTPUT);
15  pinMode(echoPin,INPUT);
16  myServo.attach(servoPin);
17  myServo.write(pos01);
18}
19
20void loop() {
21  // generate pusle trigger
22  digitalWrite(trigPin,LOW);
23  delayMicroseconds(2);
24  digitalWrite(trigPin,HIGH);
25  delayMicroseconds(10);
26  digitalWrite(trigPin,LOW);
27  // receive 
28  duration = pulseIn(echoPin,HIGH);
29  d_cm = duration * 0.034/2.;
30  //servo
31  if(d_cm>=11 & d_cm<=14){
32    for (int i=0;i<=pos02; i+=10){
33      myServo.write(i);
34      delay(15);
35    }
36    delay(400);
37    myServo.write(pos01);
38    delay(1000);
39  }
40  //print
41  Serial.print("Distance:");
42  Serial.print(d_cm);
43  Serial.println("cm");
44}
45

1#include <Servo.h>
2int echoPin = 12;
3int trigPin = 11;
4int servoPin
5  = 10;
6int duration; //micro second
7float d_cm;
8int pos01=0;
9int pos02
10  = 100;
11Servo myServo;
12void setup() {
13
14// initialize serial communication:
15
16  Serial.begin(9600);
17  pinMode(trigPin,OUTPUT);
18  pinMode(echoPin,INPUT);
19
20  myServo.attach(servoPin);
21  myServo.write(pos01);
22}
23
24void loop() {
25
26  // generate pusle trigger
27  digitalWrite(trigPin,LOW);
28  delayMicroseconds(2);
29
30  digitalWrite(trigPin,HIGH);
31  delayMicroseconds(10);
32  digitalWrite(trigPin,LOW);
33
34  // receive 
35  duration = pulseIn(echoPin,HIGH);
36  d_cm = duration * 0.034/2.;
37
38  //servo
39  if(d_cm>=11 & d_cm<=14){
40    for (int i=0;i<=pos02; i+=10){
41
42      myServo.write(i);
43      delay(15);
44    }
45    delay(400);
46    myServo.write(pos01);
47
48    delay(1000);
49  }
50  //print
51  Serial.print("Distance:");
52  Serial.print(d_cm);
53
54  Serial.println("cm");
55}
56