Ultrasonic Sensor with arduino

1
2#define TRIGER 2
3#define ECHO 4
4
5
6
7void setup() {
8   
9 pinMode(TRIGER,OUTPUT);
10 pinMode(ECHO,INPUT);
11 Serial.begin(9600);
12
13}
14
15void   loop() {
16  digitalWrite(TRIGER,LOW);
17  delayMicroseconds(2);
18  digitalWrite(TRIGER,HIGH);
19   delayMicroseconds(10);
20
21  long x =pulseIn(ECHO,HIGH);
22  long inches =   x / 74 /2;
23  long cm = x /29/2;
24  Serial.print(inches);
25  Serial.print("in\	");
26   Serial.print(cm);
27  Serial.println("cm");
28
29  if(cm<10){
30    Serial.println("stop");
31   }
32  else{
33    Serial.println("okay");
34  }
35
36 
37
38}
39

1
2#define TRIGER 2
3#define ECHO 4
4
5
6
7void setup() {
8  
9 pinMode(TRIGER,OUTPUT);
10 pinMode(ECHO,INPUT);
11 Serial.begin(9600);
12
13}
14
15void  loop() {
16  digitalWrite(TRIGER,LOW);
17  delayMicroseconds(2);
18  digitalWrite(TRIGER,HIGH);
19  delayMicroseconds(10);
20
21  long x =pulseIn(ECHO,HIGH);
22  long inches =  x / 74 /2;
23  long cm = x /29/2;
24  Serial.print(inches);
25  Serial.print("in\	");
26  Serial.print(cm);
27  Serial.println("cm");
28
29  if(cm<10){
30    Serial.println("stop");
31  }
32  else{
33    Serial.println("okay");
34  }
35
36 
37
38}
39