Simulasi Alarm Motion Detector berbasis Arduino Uno

Ini adalah tutorial untuk membantu Anda memahami ultrasonik, buzzer dan mempelajari lebih dalam Arduino. Skema ini dibangun untuk mendeteksi gerakan rintangan dan menimbulkan peringatan dengan sensor Ultrasonik.

Alat :

1. Test Board

2. Ultrasonic sensor

3. Arduino cable

4. +5V buzzer

5. Male to male pins

6. Arduino uno board

Hubungkan Sirkuit :

Hubungkan terminal positif Buzzer ke pin Arduino 2 dan terminal negatif ke Gnd. 

Hubungkan pin VCC ultrasonik ke pin +5v dan Gnd ke ground.

Hubungkan pin trigonometri ke pin 10 dan pin echo ke pin 9.

Gambar koneksi dibawah ini.

Koding Arduino :

// Define pins for ultrasonic and buzzer

int const trigPin = 10;

int const echoPin = 9;

int const buzzPin = 2;

void setup()

{

pinMode(trigPin, OUTPUT); // trig pin will have pulses output

pinMode(echoPin, INPUT); // echo pin should be input to get pulse width

pinMode(buzzPin, OUTPUT); // buzz pin is output to control buzzering

}

void loop()

{

// Duration will be the input pulse width and distance will be the distance to the obstacle in centimeters

int duration, distance;

// Output pulse with 1ms width on trigPin

digitalWrite(trigPin, HIGH); 

delay(1);

digitalWrite(trigPin, LOW);

// Measure the pulse input in echo pin

duration = pulseIn(echoPin, HIGH);

// Distance is half the duration devided by 29.1 (from datasheet)

distance = (duration/2) / 29.1;

// if distance less than 0.5 meter and more than 0 (0 or less means over range) 

    if (distance <= 50 && distance >= 0) {

    // Buzz

    digitalWrite(buzzPin, HIGH);

    } else {

    // Don’t buzz

    digitalWrite(buzzPin, LOW);

    }

    // Waiting 60 ms won’t hurt any one

    delay(60);

}

/* This code by a_atef45@yahoo.com */