Arduino – HC-SR04 Devresi

  • Merhaba, arduino devre elemanlarını tanımaya ve onların bağlantı şekillerini öğrenmeye devam ediyoruz.


Görselde gösterildiği gibi bir devre kuracak olursanız devrenin tamamlanmış olduğunu göreceksiniz.


Test Kodu –>

// Include Libraries
#include "Arduino.h"
#include "NewPing.h"

// Pin Definitions
#define HCSR04_PIN_TRIG 3
#define HCSR04_PIN_ECHO 2

// Global variables and defines

// object initialization
NewPing hcsr04(HCSR04_PIN_TRIG,HCSR04_PIN_ECHO);

// define vars for testing menu
const int timeout = 10000; //define timeout of 10 sec
char menuOption = 0;
long time0;

// Setup the essentials for your circuit to work. It runs first every time your circuit is powered with electricity.
void setup() 
 // Setup Serial which is useful for debugging
 // Use the Serial Monitor to view printed messages
 while (!Serial) ; // wait for serial port to connect. Needed for native USB
 menuOption = menu();

// Main logic of your circuit. It defines the interaction between the components you selected. After setup, it runs over and over again, in an eternal loop.
void loop() 
 if(menuOption == '1') {
 // Ultrasonic Sensor - HC-SR04 - Test Code
 // Read distance measurment from UltraSonic sensor 
 int hcsr04Dist = hcsr04.ping_cm();
 Serial.print(F("Distance: ")); Serial.print(hcsr04Dist); Serial.println(F("[cm]"));

 if (millis() - time0 > timeout)
 menuOption = menu();

// Menu function for selecting the components to be tested
// Follow serial monitor for instrcutions
char menu()

Serial.println(F("\nWhich component would you like to test?"));
 Serial.println(F("(1) Ultrasonic Sensor - HC-SR04"));
 Serial.println(F("(menu) send anything else or press on board reset button\n"));
 while (!Serial.available());

// Read data from serial monitor if received
 while (Serial.available()) 
 char c =;
 if (isAlphaNumeric(c)) 
 if(c == '1') 
 Serial.println(F("Now Testing Ultrasonic Sensor - HC-SR04"));
 Serial.println(F("illegal input!"));
 return 0;
 time0 = millis();
 return c;
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