====== HY-SFR05 ultrazvukový detektor ======

<imgcaption image1|>{{.hy-sfr05-pinout.jpg?direct|pinout}}Pinout</imgcaption>
<imgcaption imageľ|>{{.hy-srf05-sonar-annotated.jpg?direct|Schéma zapojenia}}Schéma zapojenia</imgcaption>

==== Dodatočné info ====
[[http://forum.arduino.cc/index.php?topic=180612.0|preprogramovanie firmare]]

==== Návod ====
[[http://www.f15ijp.com/2012/09/arduino-ultrasonic-sensor-hc-sr04-or-hy-srf05/|návod aj s nasledujúcim programom]]

<imgcaption image3|>{{.hr-srf05-connect.jpg?direct&800|BreadBoard Connection}}BreadBoard Connection</imgcaption>
<file ultrasound.c>
/*
Tested with HY-SRF05, HC-SR04
Assuming a room temp of 20 degrees centigrade
The circuit:
	* VVC connection of the sensor attached to +5V
	* GND connection of the sensor attached to ground
	* TRIG connection of the sensor attached to digital pin 2
        * ECHO connection of the sensor attached to digital pin 3
*/
 
const int TRIG_PIN = 2;
const int ECHO_PIN = 3;
 
void setup() {
  // initialize serial communication:
  Serial.begin(9600);
 
  pinMode(TRIG_PIN,OUTPUT);
  pinMode(ECHO_PIN,INPUT);
}
 
void loop()
{
   long duration, distanceCm, distanceIn;
 
  // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  duration = pulseIn(ECHO_PIN,HIGH);
 
  // convert the time into a distance
  distanceCm = duration / 29.1 / 2 ;
  distanceIn = duration / 74 / 2;
 
  if (distanceCm <= 0){
    Serial.println("Out of range");
  }
  else {
    Serial.print(distanceIn);
    Serial.print("in, ");
    Serial.print(distanceCm);
    Serial.print("cm");
    Serial.println();
  }
  delay(1000);
}
</file>