Monday, March 19, 2018

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Sensor TCRT5000 Menggunakan Arduino

Sensor TCRT5000 adalah sensor reflective atau pantulan yang dibuat dengan sebuah Infrared sebagai pemancarnya dan potodiode/trasnsitor sebagai penerimanya. Sering digunakan sebagai sensor untuk membaca benda dengan memanfaatkan pantulan cahaya dan diterima oleh pododiode. Biasa digunakan pada mouse, robot line follower, dll. Pada tutorial kali ini akan dimanfaatkan untuk membaca 2 warna yang berbeda yaitu hitam dan putih. seperti yang kita ketahu bahwa warna puti bersifat memantulkan cahaya dan warna hitam menyerap cahaya. Berikut ini adalah cara kerjanya.

Pada artikel ini akan diberikan pemrograman interrupt arduino dengan memanfaatkan data keluaran sensor TCRT5000. namun sedikit penjelasan terkait fungsi perinttah interrupt. Perinta interrupt adalah perintah untuk menginterupsi/menyelah proses kerja suatu program dimana akan dikerjakan program yang lebih diutamakan. Pada arduino biasa fungsi interrupt dikerjakan jika terdapat input/masukan pada pin Interrupt/INT (arduino uno pin 2 dan 3). Pada tutorial ini akan ditampilkan data interrupt untuk menghitung nilai dari variable. berikut ini komponen yang dibutuhkan

Bahan

TCRT5000 Sensor

Arduino Uno

Rangkaian

Baca juga : Thermal Printer Menggunakan Arduino

Hubungkan masing-masing komponen sesuai dengan skema diatas, pastikan pin pin D0 sensor terhubung pada D2 atau D3 arduino uno karena harus terhubung pada pin interrupt. Setelah itu, upload program dibawah ini.

#define LED 13 
#define Sensor 2
int data;
void setup() {
  Serial.begin(9600);
  attachInterrupt(digitalPinToInterrupt(Sensor), count, RISING);
  pinMode(LED, OUTPUT);
}

void loop() {
  digitalWrite(LED,!digitalRead(LED));
  delay(1000);
}

void count() {
  data++;
  Serial.print("Nilai : ");
  Serial.println(data);
}

Dari program diatas, jika sensor mengalami perubahan data dari 0 ke 1, maka arduino akan mendahulukan program pada fungsi count(). variable data akan di increment/ ditambah 1 setiap kali tedapat perubahan data sensor. Sebagai program utama pada menu loop, saya berikan program LED kedip-kedip/blink. Berikut haril keluaran data pada serial monitoring.

Yang wajib diketahui dalam menggunakan fungsi intterupt adalah mode yang digunakan dan konfigurasinya, berikut link referensi untuk lengkapnya > Arduino AttachInterrupt

> attachInterrupt(digitalPinToInterrupt(pin), ISR, mode);

pin adalah pin interrupt yang digunakan, disini saya menggunakan pin D2. ISR adalah program yang akan dijalankan, wajib dimasukan dalam fungsi (void), jadi anda hanya memasukan nama fungsinya seperti count diatas. Mode merupakan fungsi dari pembacaan interupsinya, berikut macam-macam dan fungsinya.

LOW, dikerjakan jika pin intterupt berlogika LOW (0)
CHANGE, dikerjakan jika pin intterupt mengalami perubahan logika dari 0 ke 1 atau sebaliknya.
RISING, dikerjakan jika pin intterupt mengalami perubahan logika dari 0 ke 1.
FALLING, dikerjakan jika pin intterupt mengalami perubahan logika dari 1 ke 0.

Pemanfaatan mode disesuaikan dengan inputan yang digunakan, contoh diatas jika sensor tidak menditeksi benda makan berlogika 0 dan jika menditeksi benda menjadi berlogika 1. Sehingga saya menggunakan mode RISING.

Pemanfaatan lain dari fungsi interrupt biasanya digunakan untuk menggukur RPM motor, karena membutuhkan tingkat keberhasilan pembacaan sensor yang tinggi, dan mengurangi terlewatnya pembacaan fungsi interrupt sangat penting.

demikian tutorial saya, semoga bermanfaat. terima kasih

Thermal Printer Menggunakan Arduino

Thermal Printer adalah jenis printer yang menggunakan proses cetak dengan teknologi pemanas untuk mengaktifkan tinta.Printer thermal relatif lebih efisien dan ekonomis di banding printer dot matrik.

Module/Part yang di butuhkan :

Arduino
Modul Thermal Printer Support Arduino
Adaptor 9V 2 A
Kabel Jumper Secukupnya

Library :
Download library Thermal Printer (sumber : github-adafruit)

WIRING DIAGRAM
Berikut Wiring Diagram Thermal Printer Menggunakan arduino

Baca juga : Water Level Sensor Menggunakan Arduino

ALOKASI PIN ARDUINO
Komunikasi Thermal Printer denga Arduino menggunakan komunikasi Serial TTL.untuk Pinout nya sebagai berikut :

Thermal Printer	Arduino
Rx	11
Tx	10
VCC	+5V
GND	Gnd

CONTOH PROGRAM

untuk contoh program download disini

#include "Adafruit_Thermal.h"
#include "adalogo.h"
#include "adaqrcode.h"

#include "SoftwareSerial.h"
#define TX_PIN 11  // Pin 11 Arduino ke RX Printer
#define RX_PIN 10  // Pin 10 Arduino ke TX Printer

SoftwareSerial mySerial(RX_PIN, TX_PIN); 
Adafruit_Thermal printer(&mySerial);  

void setup() {
  
  mySerial.begin(9600);  // Initialize Baudrate SoftwareSerial
  printer.begin();        

  printer.setSize('L');  
  printer.justify('C');
  printer.println(F("Printer Test\n\n\n\n"));

  printer.sleep();      // printer to sleep
  delay(3000L);         // Sleep for 3 seconds
  printer.wake();       
  printer.setDefault(); 
}

void loop() {
}

Thermal Printer banyak di aplikasikan untuk system antrian dan print out tanda terima, misalnya karcis parkir, karcis film, antrian dokter , antrian di bank dan lain-lain.

demikian tutorial dari saya, semoga bermanfaat. terimakasih

Sunday, March 18, 2018

Water Level Sensor Menggunakan Arduino

Pengenalan

Water level sensor merupakan sebuah modul yang berfungsi seperti tombol yang merubah nilai logika keluaranya, namun sensor ini akan berubah nilainya dipengaruhi oleh air. Sehingga kedua kutup konduktor pada sensor tersebut terhubung dengan air yang bersifat sebagai konduktor penghantar listrik.

Dalam berbegai hal module ini sering digunakan sebagai sarana otomatisi, seperti water level, tandon air, sensor hujan, dll. Sehingga sangat bermfaat dalam kehidupan sehari-hari.

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