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Sonar Sensor - දුර මනින සංවේදකය

Sonar Sensor කියන්නෙ ඉතින් Arduino එකෙන් Robots හදන්න කැමති අයට නැතුවම බැරි දෙයක්නෙ. ඔන්න එහෙනම් ගෙනාවා ඒ ගැන ලිපියක්.

මුලින්ම වයර් අමුනගන්න පහත ආකාරයට.

මෙන්න Code එක.


const int trigPin = 2;
const int echoPin = 4;
 
void setup() {
// initialize serial communication:
Serial.begin(9600);
}
 
void loop()
{
// establish variables for duration of the ping,
// and the distance result in inches and centimeters:
long duration, inches, cm;
 
// The sensor is triggered by a HIGH pulse of 10 or more microseconds.
// Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
pinMode(trigPin, OUTPUT);
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
 
// Read the signal from the sensor: 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(echoPin, INPUT);
duration = pulseIn(echoPin, 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-PING-v1.3.pdf
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;
}
දැන් Serial Monitor එක දාලා බලන්න සංවේදකයෙන් දුර මනින ආකාරය.

4 comments:

  1. sadeepa mekedi wadakaranawada kiyala balaganne kohomada

    ReplyDelete
    Replies
    1. mouleනැකක් arduino එකට අමුණගෙනම තමයි බලන්න වෙන්නෙ

      Delete
  2. microsecondsToInches(duration);
    Kiyana eka declear krala ne kyanawne

    ReplyDelete
  3. microsecondsToInches(duration);
    Kiyana eka declear krala ne kyanawne

    ReplyDelete