Difference between revisions of "Arduino: Ping dengan hc sr04"

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(New page: Sumber: http://www.instructables.com/id/Easy-ultrasonic-4-pin-sensor-monitoring-hc-sr04/ ==Code== int vcc = 2; //attach pin 2 to vcc int trig = 3; // attach pin 3 to Trig int echo...)
 
 
(2 intermediate revisions by the same user not shown)
Line 1: Line 1:
 
Sumber: http://www.instructables.com/id/Easy-ultrasonic-4-pin-sensor-monitoring-hc-sr04/
 
Sumber: http://www.instructables.com/id/Easy-ultrasonic-4-pin-sensor-monitoring-hc-sr04/
  
 +
 +
 +
==Diagram==
 +
 +
[[Image:Ultrasound-hc-sr04-01.jpg|center|200px|thumb]]
  
  
Line 7: Line 12:
 
==Code==
 
==Code==
  
  int vcc = 2; //attach pin 2 to vcc
+
  int vcc = 2; //attach pin 2 to vcc
 
  int trig = 3; // attach pin 3 to Trig
 
  int trig = 3; // attach pin 3 to Trig
 
  int echo = 4; //attach pin 4 to Echo
 
  int echo = 4; //attach pin 4 to Echo
  int gnd = 5; //attach pin 5 to GND
+
  int gnd = 5; //attach pin 5 to GND
 
   
 
   
 
  void setup() {  
 
  void setup() {  
+
    pinMode (vcc,OUTPUT);
pinMode (vcc,OUTPUT);
+
    pinMode (gnd,OUTPUT);
pinMode (gnd,OUTPUT);
+
    // initialize serial communication:
// initialize serial communication:
+
    Serial.begin(9600);
Serial.begin(9600);
 
 
  }
 
  }
 
   
 
   
  void loop()
+
  void loop() {
{
+
    digitalWrite(vcc, HIGH);
digitalWrite(vcc, HIGH);
+
    // establish variables for duration of the ping,
// establish variables for duration of the ping,
+
    // and the distance result in inches and centimeters:
// and the distance result in inches and centimeters:
+
    long duration, inches, cm;
long duration, inches, cm;
+
   
 +
    // The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
 +
    // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
 +
    pinMode(trig, OUTPUT);
 +
    digitalWrite(trig, LOW);
 +
    delayMicroseconds(2);
 +
    digitalWrite(trig, HIGH);
 +
    delayMicroseconds(5);
 +
    digitalWrite(trig, LOW); 
 +
   
 +
    // The same pin is used to read the signal from the PING))): a HIGH
 +
    // pulse whose duration is the time (in microseconds) from the sending
 +
    // of the ping to the reception of its echo off of an object.
 +
    pinMode(echo,INPUT);
 +
    duration = pulseIn(echo, HIGH);
 +
     
 +
    // convert the time into a distance
 +
    inches = microsecondsToInches(duration);
 +
    cm    = microsecondsToCentimeters(duration);  
 
   
 
   
// The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
+
    Serial.print(inches);
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
+
    Serial.print("in, ");
pinMode(trig, OUTPUT);
+
    Serial.print(cm);
digitalWrite(trig, LOW);
+
    Serial.print("cm");
delayMicroseconds(2);
+
    Serial.println();  
digitalWrite(trig, HIGH);
+
     
delayMicroseconds(5);
+
    delay(100);
digitalWrite(trig, LOW); 
 
 
// The same pin is used to read the signal from the PING))): a HIGH
 
// pulse whose duration is the time (in microseconds) from the sending
 
// of the ping to the reception of its echo off of an object.
 
pinMode(echo,INPUT);
 
duration = pulseIn(echo, HIGH);
 
 
// convert the time into a distance
 
inches = microsecondsToInches(duration);
 
cm = microsecondsToCentimeters(duration);
 
 
Serial.print(inches);
 
Serial.print("in, ");
 
Serial.print(cm);
 
Serial.print("cm");
 
Serial.println();  
 
 
delay(100);
 
 
  }  
 
  }  
 
   
 
   
 
  long microsecondsToInches(long microseconds)
 
  long microsecondsToInches(long microseconds)
 
  {
 
  {
// According to Parallax's datasheet for the PING))), there are
+
    // According to Parallax's datasheet for the PING))), there are
// 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
+
    // 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
// second). This gives the distance travelled by the ping, outbound
+
    // second). This gives the distance travelled by the ping, outbound
// and return, so we divide by 2 to get the distance of the obstacle.
+
    // and return, so we divide by 2 to get the distance of the obstacle.
// See: http://www.parallax.com/dl/docs/prod/acc/28015-PI...
+
    // See: http://www.parallax.com/dl/docs/prod/acc/28015-PI...
return microseconds / 74 / 2;
+
    return microseconds / 74 / 2;
 
  }
 
  }
 
   
 
   
 
  long microsecondsToCentimeters(long microseconds)
 
  long microsecondsToCentimeters(long microseconds)
 
  {
 
  {
// The speed of sound is 340 m/s or 29 microseconds per centimeter.
+
    // The speed of sound is 340 m/s or 29 microseconds per centimeter.
// The ping travels out and back, so to find the distance of the
+
    // The ping travels out and back, so to find the distance of the
// object we take half of the distance travelled.
+
    // object we take half of the distance travelled.
return microseconds / 29 / 2;
+
    return microseconds / 29 / 2;
  }  
+
  }
 +
 
 +
==Monitor==
 +
 
 +
Hasil monitor akan keluar, seperti,
 +
 
 +
 
 +
1838in, 4691cm
 +
3in, 9cm
 +
4in, 12cm
 +
4in, 12cm
 +
1842in, 4701cm
 +
3in, 8cm
 +
1818in, 4639cm
 +
3in, 8cm
 +
1823in, 4654cm
 +
3in, 9cm
 +
1832in, 4675cm
 +
 
 +
 
  
  

Latest revision as of 15:47, 21 March 2022

Sumber: http://www.instructables.com/id/Easy-ultrasonic-4-pin-sensor-monitoring-hc-sr04/


Diagram

Ultrasound-hc-sr04-01.jpg



Code

int vcc  = 2; //attach pin 2 to vcc
int trig = 3; // attach pin 3 to Trig
int echo = 4; //attach pin 4 to Echo
int gnd  = 5; //attach pin 5 to GND

void setup() { 
    pinMode (vcc,OUTPUT);
    pinMode (gnd,OUTPUT);
    // initialize serial communication:
    Serial.begin(9600);
}

void loop() {
    digitalWrite(vcc, HIGH);
    // establish variables for duration of the ping,
    // and the distance result in inches and centimeters:
    long duration, inches, cm;
    
    // The PING))) is triggered by a HIGH pulse of 2 or more microseconds.
    // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
    pinMode(trig, OUTPUT);
    digitalWrite(trig, LOW);
    delayMicroseconds(2);
    digitalWrite(trig, HIGH);
    delayMicroseconds(5);
    digitalWrite(trig, LOW);  
    
    // The same pin is used to read the signal from the PING))): a HIGH
    // pulse whose duration is the time (in microseconds) from the sending
    // of the ping to the reception of its echo off of an object.
    pinMode(echo,INPUT);
    duration = pulseIn(echo, HIGH); 
     
    // convert the time into a distance
    inches = microsecondsToInches(duration);
    cm     = microsecondsToCentimeters(duration); 

    Serial.print(inches);
    Serial.print("in, ");
    Serial.print(cm);
    Serial.print("cm");
    Serial.println(); 
     
    delay(100);
} 

long microsecondsToInches(long microseconds)
{
    // According to Parallax's datasheet for the PING))), there are
    // 73.746 microseconds per inch (i.e. sound travels at 1130 feet per
    // second). This gives the distance travelled by the ping, outbound
    // and return, so we divide by 2 to get the distance of the obstacle.
    // See: http://www.parallax.com/dl/docs/prod/acc/28015-PI...
    return microseconds / 74 / 2;
}

long microsecondsToCentimeters(long microseconds)
{
    // The speed of sound is 340 m/s or 29 microseconds per centimeter.
    // The ping travels out and back, so to find the distance of the
    // object we take half of the distance travelled.
    return microseconds / 29 / 2;
}

Monitor

Hasil monitor akan keluar, seperti,


1838in, 4691cm
3in, 9cm
4in, 12cm
4in, 12cm
1842in, 4701cm
3in, 8cm
1818in, 4639cm
3in, 8cm
1823in, 4654cm
3in, 9cm
1832in, 4675cm



Referensi