Arduino ja ultraheliandur

Lisan ühendamise skeemi ja kauguse mõõtmise koodi.

Originaali leiab http://arduinobasics.blogspot.com.ee/2012/11/arduinobasics-hc-sr04-ultrasonic-sensor.html

Ühendamise skeem

Kauguse mõõtmise kood: LED pin 13 on koodist välja märgitud!

 HC-SR04 Ping distance sensor:
 VCC to arduino 5v 
 GND to arduino GND
 Echo to Arduino pin 7 
 Trig to Arduino pin 6
 This sketch originates from Virtualmix: http://goo.gl/kJ8Gl
 Has been modified by Winkle ink here: http://winkleink.blogspot.com.au/
 And modified further by ScottC here: http://arduinobasics.blogspot.com.au/
 on 10 Nov 2012.

#define echoPin 7 // Echo Pin
#define trigPin 6 // Trigger Pin
//#define LEDPin 13 // Onboard LED

int maximumRange = 200; // Maximum range needed
int minimumRange = 0; // Minimum range needed
long duration, distance; // Duration used to calculate distance

void setup() {
 Serial.begin (9600);
 pinMode(trigPin, OUTPUT);
 pinMode(echoPin, INPUT);
 //pinMode(LEDPin, OUTPUT); // Use LED indicator (if required)

void loop() {
/* The following trigPin/echoPin cycle is used to determine the
 distance of the nearest object by bouncing soundwaves off of it. */ 
 digitalWrite(trigPin, LOW); 

 digitalWrite(trigPin, HIGH);
 digitalWrite(trigPin, LOW);
 duration = pulseIn(echoPin, HIGH);
 //Calculate the distance (in cm) based on the speed of sound.
 distance = duration/58.2;
 if (distance >= maximumRange || distance <= minimumRange){
 /* Send a negative number to computer and Turn LED ON 
 to indicate "out of range" */
 //digitalWrite(LEDPin, HIGH); 
 else {
 /* Send the distance to the computer using Serial protocol, and
 turn LED OFF to indicate successful reading. */
 //digitalWrite(LEDPin, LOW); 

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