Interface single and Dual IR Infrared sensor with Arduino and LCD

Interface single and Dual IR Infrared sensor with Arduino and LCD

Introduction- Multiple Sensor Interface to Arduino


In this another tutorial on sensors  for beginners, we are going to interface single and multiple Infrared IR sensors with Arduino Uno development board, working simultaneously and have the status displayed either on an ( 4X16 LCD ) LCD module (jhd162a) or an LED. We are going to cover three chapters in single tutorial in simple step by step fashion. The purpose of this tutorial is to serve the basics for beginners with Sensor interface on Arduino for being able to use these concepts and to develop various other sensor based applications (robotics, Automation Projects etc.). We will use the same Object Detection Proximity IR Sensor Module that we made in our precedent tutorial. In our previous Proximity Sensor tutorials we have learned how to interface IR sensor with various other microcontrollers such as PIC18F4550 and 18F2550; However, today we are going to learn how to interface the same infrared sensor with the famous Arduino Uno board.

To begin easy, first we are going to interface a Single IR sensor for sensing the distance and read the value of the sensor using an Arduino board and have status displayed on a LED. On the next level we are going to do same with two IR sensors working simultaneously. At last we will interface (add) an LCD (Liquid Crystal Display) and have the status of both the Infrared sensors displayed on a 4X16 LCD Display unit. The Concepts for Reading the IR sensor is still same as explained in previous lessons, the only difference is the Arduino board.

 

Requirements

- Arduino Uno
- Infrared IR sensor Module
- JHD162a 4X16 LCD
- Resistors
- LEDS

Single and Dual Infrared sensor interface with (LCD) Liquid crystal display on Arduino Uno R3 development board

Arduino Uno Interface board interface with LCD

 

Infrared IR Sensor Module

IR Object detection sensor moduleWe will use the IR Infrared Sensor Circuit module that we made in our previous project, which is an inexpensive (Low Cost)  sensor circuit module. You can find the schematic and PCB design in my previous post. There are three pins in the Schematic - Two pins for providing the input voltage and GND, and the third pin from the IR module is the IR control pin. This Control Pin from the IR sensor Module will be interfaced to the Arduino for reading the value from sensor. We will use two identical copies of the sensor for our tutorial.

 

Single Infrared IR Sensor Interface with Arduino + LED interface

As mentioned before we are going to start easy,hence here we going to interface just one infrared sensor circuit with Arduino, the source code is pretty much self-explanatory. Like every microcontroller, we need to define pins either as input or output. We have configured Pin 13 as output, and pin 9 as input for taking input from sensor. The Result of sensor will reflect on the LED connected on pin13 which is configured as output. The source code can be tweaked easily to display the result on serial monitor too.

We are going to leave pin 0 to Pin 7 on Arduino Uno untouched for using it with LCD operation in future. Make the Circuit ready according to the schematics below to proceed further. Arduino will draw power from USB hence there is no need to interface external power supply as long as the board is connected with USB cable.

Arduino and Single Infrared (IR sensor) with one LED

 

Schematic (Single Sensor Interface)

USE and GND and +5V pins on the arduino to power the IR sensors. Make the necessary wiring according to the schematic given below.

Single IR Sensor Interface schematic on eagle PCB for Arduino Uno

NOTE: The operation is quiet similar to that of interfacing a simple switch to Arduino or any microcontroller, But here you don’t need to ground the input pin (pull-down) with a resister. In Arduino pin13 by default is interfaced with an On board led for displaying status. We can use that one on board led or you can interface an Extra led on Pin 13 to have the Status displayed.

Arduino on board LED and pin 13 as output on Arduino

Source Code: Dual IR Sensor - LED

Copy this sketch below and launch your Arduino IDE and create a new project. Paste, compile and Run the source code. You can also download the Sketch at the end of this source code. After the sketch is compiled and uploaded, any object within a short distance must make the on board led or the LED connected on Pin13 to light up.

Source code: Single IR Interface

/*
 * File: Single_IR_Sensor_Interface.ino
* Author: ron
 * December 08, 2013, 2:21 AM
 */
int irsensor1 = 6;
int led1 = 13;

void setup()
   {
       pinMode(irsensor1 , INPUT);
       pinMode(led1, OUTPUT);
    }

void loop()
{

    int readsen = digitalRead( irsensor1 );
       if( readsen == HIGH )
     {
       digitalWrite(led1, HIGH);
     }
else
     {
       digitalWrite(led1, !HIGH);
      }
delay(1);
}

/* THE END */

Download source code: Single IR Sensor Arduino(.uno)

 

Now we are going to interface two IR infrared sensors with the same Arduino board and have result displayed on LES's. With some additional operators on the source code its quiet easy to get the status of both the sensors. Here also we are going to have the status of the sensor displayed on LED’s.  We will need two additional pins for input and output operation for the additional sensor. Hence totally we need two Pins for Input from sensors and two output pins for having the status displayed.

PIN 13, Pin12 - Output
PIN 6, PIN 7 - Inputs

 

Schematic (Dual Sensor Interface- LED)

Make the circuit connection according the schematic given below and proceed forward.

Dual or two Infrared IR sensor interface with Arduino and two LED

NOTE: The operation is quiet similar to that of interfacing a simple switch to Arduino or any microcontroller, But here you don’t need to ground the input pin (pull-down) with a resister.

Source Code: Dual IR Sensor - LED

/*
 * File: Dual_IR_Sensor_Arduino.ino
* Author: ron
 * December 08, 2013, 2:21 AM
 */
int irsensor1 = 5;
int irsensor2= 6;

int led1 = 13;
int led2 = 12;

void setup()
{
       pinMode(irsensor1 , INPUT); pinMode(irsensor2 , INPUT);
       pinMode(led1, OUTPUT); pinMode(led2, OUTPUT);
}

void loop()
{
       int readsen = digitalRead( irsensor1 );
       int readsen1 = digitalRead( irsensor2 );

if(readsen == HIGH && readsen1 == HIGH )
{
       digitalWrite(led1, HIGH);
       digitalWrite(led2, HIGH);
}
else if(readsen == !HIGH && readsen1 == HIGH )
{
       digitalWrite(led1, !HIGH);
       digitalWrite(led2, HIGH);
}
else if(readsen == HIGH && readsen1 == !HIGH )
{
       digitalWrite(led1, HIGH);
       digitalWrite(led2, !HIGH);
}
else
{
       digitalWrite(led1, LOW);
       digitalWrite(led2, LOW);
}

delay(1);
}


/* THE END */

Download source code: Dual IR Sensor interface(.uno)

 

At this stage now we are going to get rid of LED’s and have the status of the sensor displayed on a jhd162a 4X16 Liquid Crystal Display (LCD ) module. Arduino provides absolutely great set of LCD libraries which supports various types of character and Graphical LCD’s, which can save a lot of coding and pain to interface an LCD. For LCD we will use pin 0 to pin 7 on the Arduino and configure the source code accordingly.

Interface the LCD to the Arduino board according to the schematics given below and proceed forward.

Single and Dual Infrared IR Sensor interface to LCD with ArduinoLCD interface with Dual IR sensor on Arduino Uno platform

Object detection sensor interface with Arduino and liquid Crystal display

 

Schematic (Dual Sensor Interface- LCD )

Schematic and circuit diagram for Dual infrared object detection interface with Arduino, Eagle PCB

Circuit and Schematics for Dual IR sensor and LCD with Arduino Uno

Source Code: Dual IR Sensor - LCD Interface

Create a new project and compile the sketch below. After the code is successfully uploaded, the Arduino should able to display the status of the sensors on the LCD module with the back light glowing. Both the sensors should be able to work simultaneously if everything is right. You can download the sketch at the end of the source code.  

/*
 * File: Dual_IR_Sensor_LCD_Arduino.ino
* Author: ron
 * December 08, 2013, 2:21 AM
 */

#include <Wire.h>
#include <LiquidCrystal.h>
#define sensor1 x = 9
#define sensor2 y = 8
#define colx 8

int sensor1,sensor2;
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);

void setup()
{
       pinMode(sensor1, INPUT);
       pinMode(sensor2, INPUT);
       lcd.begin(16,2);
       lcd.setCursor(0,0);
       lcd.print("Sensor1:");
       lcd.setCursor(0,1);
       lcd.print("Sensor2:");
}
void set1()
{ lcd.setCursor(colx,0); lcd.print("OK!!"); lcd.setCursor(colx,1); lcd.print("OK!!"); }
void set2()
{ lcd.setCursor(colx,0); lcd.print("OK!!"); lcd.setCursor(colx,1); lcd.print("NA "); }
void set3()
{ lcd.setCursor(colx,0); lcd.print("NA "); lcd.setCursor(colx,1); lcd.print("OK!!"); }
void defaul()
{ lcd.setCursor(colx,0); lcd.print("NA "); lcd.setCursor(colx,1); lcd.print("NA "); }

void loop()
{
       int senread1 = digitalRead(sensor1);
       int senread2 = digitalRead(sensor2);

if(senread1 == HIGH && senread2 == HIGH )
{        set1();        }
else if(senread1 == !HIGH && senread2 == HIGH )
{        set2();        }
else if(senread1 == HIGH && senread2 == !HIGH )
{        set3();        }
else
{
defaul();
}

delay(1);
}

/* THE END */

Download source code: Dual IR Sensor LCD interface(.uno)

 

Source code, project and tutorial for IR sensor interface to Arduino on LCD

LCD Interface to IR sensor with Arduino Uno

 

Project Files

- Single IR Sensor Source code
- Dual IR Sensor Source code
- Dual IR Sensor and LCD interface

Comments

1

Thank you Google for clearing my doubts immediately

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