Alat Ukur Jarak Ultrasonic dengan HC-SR04 Arduino

 

Coding:

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);  // GANTI 0x3F Ke 0x27 kalau LCD tidak muncul

const int trigPin = 12;

const int echoPin = 11;

// defines variables

long duration;

int distance;

void setup() 

{

lcd.init();

lcd.setCursor(0,0);

lcd.print("ARNOLD SMNJUNTAK");

lcd.setCursor(0,1);

lcd.print("  PINTU SHARE");

delay (5000);

pinMode(trigPin, OUTPUT); // trigPin sebagai Output

pinMode(echoPin, INPUT); // echoPin sebagai Input

Serial.begin(9600); // serial communication

}

void loop() 

{

lcd.clear();

digitalWrite(trigPin, LOW);

delayMicroseconds(2);

// Sets the trigPin on HIGH state for 10 micro seconds

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW);

// Reads the echoPin, returns the sound wave travel time in microseconds

duration = pulseIn(echoPin, HIGH);

// Calculating the distance

distance= duration*0.034/2;

// Prints the distance on the Serial Monitor

Serial.print("Jarak: ");

Serial.println(distance);

  lcd.setCursor(0,0);

  lcd.print("Jarak: ");

  lcd.print(distance);

  lcd.print(" cm");

  lcd.setCursor(0,1);

  lcd.print("By: Pintu Share");

  delay (500);

}