Turn LED On/Off using Light Blocking Sensor

Turn LED On/Off using Light Blocking Sensor using arduino!

Hardware Required

Introduction

In this project, we will know about the basic functionality of Light Blocking Sensor and also turn the LED On/Off using the sensor.

HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download: https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

Light Blocking Module

This sensor is widely used in motor speed detection, pulse count, the position limit, etc. The DO output interface can be directly connected to a micro-controller IO port, if there is a block detection sensor, such as the speed of the motor encoder can detect. DO modules can be connected to the relay, limit switch, and other functions, it can also with the active buzzer module, compose alarm.

Using imported groove optical coupling sensor, width 5mm.
It has the output state light, if output high level, the lights are off. If output low level, it stays on.
If it covered, it will output a high level; otherwise low level.
Good signal & waveform, with the strong driving ability for more than 15mA.
The working voltage of 3.3V to 5V
Output: digital switch output (0 and 1)
Equipped with a fixed bolt hole, easily install.
Use the LM393 wide voltage comparer

Arduino Uno

CIRCUIT CONNECTION

Attach LED and Light Blocking Sensor on the Breadboard.
Connect the negative terminal of LED with GND of Arduino Uno.
Connect the positive terminal of LED with Digital Pin 13 of Arduino Uno.
Connect VCC of Light Blocking Sensor with Pin 5V of Arduino Uno.
Connect GND of Light Blocking Sensor with GND of Arduino Uno.
Connect Pin Signal of Light Blocking Sensor with Digital Pin 3 of Arduino Uno.

CODE

https://drive.google.com/open?id=1jHCAusgsNebXamoNax8uym-j_2AjPxTZ

int Led=13;//define the led’s(also use buzzer) port

int sensor =3; //define the port of light blocking module

int val;//define digital variable val

/* The setup() function is called when a sketch starts. It is used to initialize variables, pin modes, start using libraries, etc. This function will only run once, after each power up or reset of the Arduino board. */

void setup()

{

pinMode(Led,OUTPUT);//define digital variable val

pinMode(sensor ,INPUT);//define light blocking module as a output port

}

/* The loop() function executes the program repeatedly until Specified. */

void loop()

{ val=digitalRead(sensor);//read the value of the digital interface 3 assigned to val

if(val==HIGH)//when the light blocking sensor have signal, LED blink

{

digitalWrite(Led,HIGH);

}

else

{

digitalWrite(Led,LOW);

}

WORKING

Welcome to the Arduino Based Project which consists of Light blocking Sensor Module. The basic functionality of this sensor is described here. It is transmission type photosensor that integrates optical receiving and transmitting elements in a single package. Since the method involves light blocking commonly named photo interrupter. A long life infrared photodiodes are applied for output while a single phototransistor and photo IC are integrated on the other side for light detection. A Photoelectric Sensor consists of an Emitter for emitting light and a Receiver for receiving light. When emitted light is interrupted or reflected by the sensing object, it changes the amount of light that arrives at the Receiver. The Receiver detects this change and converts it to an electrical output.

Here, we are controlling an LED which turns on when Light Blocking Sensor is interrupted with some external component.