VERY EASY Arduino IR Sensor Tutorial for Beginners | IR Sensor Arduino Tutorial | Infrared Sensor

Summary

This tutorial demonstrates how to use an IR proximity sensor with an Arduino to operate various devices. It covers the sensor's working principle, circuit diagrams, and source code. The sensor detects objects within 2 to 60 cm and its sensitivity is adjustable. The video guides through connecting the sensor to Arduino, calibrating it, and uploading sample code that triggers a buzzer and displays sensor status on the serial monitor. It also suggests modifying the code for different applications and using a relay module for motors or appliances.

Takeaways

• 🔍 The video demonstrates how to use an IR proximity sensor with an Arduino board to operate various devices.
• 💡 The sensor consists of an infrared emitter and a receiver, which can detect objects within a range of 2 to 60 centimeters.
• 🔧 The sensitivity of the sensor can be adjusted using a potentiometer.
• 🔌 The sensor is connected to the Arduino using three jumper wires, linking VCC, ground, and the output pin to the board's corresponding pins.
• 📢 A 5-volt active buzzer is used as an indicator, connected to digital pin 8 and ground.
• 🖥️ The Arduino board is connected to a computer via USB for programming and power.
• 🔧 The sensor's calibration involves placing an object at a specific distance and adjusting the potentiometer until the obstacle LED turns on and off correctly.
• 📝 The provided Arduino code includes setup and loop functions, with the loop function checking the sensor's state and controlling the buzzer accordingly.
• 👀 The code differentiates between a high signal (no object detected) and a low signal (object detected), triggering the buzzer and serial monitor messages.
• 🛠️ Beginners can refer to a previous tutorial for uploading code to the Arduino board, linked in the video description.
• 🔄 The buzzer and serial monitor demonstrate the sensor's functionality in real-time when an object is near or away.
• 🔌 The tutorial suggests using a relay module to control motors or other appliances with the IR sensor for more complex projects.

Q & A

What is the purpose of the infrared emitter in the proximity sensor?

The infrared emitter in the proximity sensor emits IR signals which, when they hit an object, bounce back and are detected by the IR receiver, allowing the sensor to detect objects within a certain range.

How can the sensitivity of the proximity sensor be adjusted?

The sensitivity of the proximity sensor can be adjusted by rotating the potentiometer, which helps in calibrating the sensor to detect objects at the desired distance.

What are the three connections required to connect the proximity sensor to the Arduino board?

The three connections required are: VCC pin of the sensor to the 5V pin of Arduino, the ground pin of the sensor to the ground pin of Arduino, and the OUT pin of the sensor to digital pin 2 of Arduino.

How is the buzzer connected to the Arduino board in the tutorial?

The buzzer is connected to the Arduino board using two male-to-female jumper wires, with the positive pin connected to digital pin 8 of Arduino and the negative pin connected to the ground pin of Arduino.

What is the function of the serial communication in the Arduino code provided in the tutorial?

The serial communication in the Arduino code starts at a baud rate of 9600, which allows the Arduino to communicate with the computer and print messages on the serial monitor.

What does the 'sensor status' variable in the code represent?

The 'sensor status' variable in the code represents the digital input from the IR sensor, which is used to determine whether an object is detected or not.

How does the code differentiate between the presence and absence of an object in front of the sensor?

The code checks the digital state of the sensor; it outputs a low signal when an object is detected and a high signal when no object is present. Based on this, the code turns the buzzer on or off and prints the corresponding message on the serial monitor.

What is the purpose of the delay in the loop function of the Arduino code?

The delay in the loop function of the Arduino code, set to 500 milliseconds, ensures that the code does not loop too quickly, giving the sensor time to stabilize and accurately detect objects.

How can the basic code provided in the tutorial be modified to control other devices like motors?

The basic code can be modified by using a relay module instead of the buzzer, which allows the IR sensor to control motors or other electrical appliances.

What additional tutorial is recommended for those who want to learn about using relays with Arduino?

The tutorial creator recommends watching a detailed tutorial about using relays with Arduino, which will provide insights on how to implement such functionality.

Outlines

00:00

🛠 Arduino Proximity Sensor Tutorial Overview

This paragraph introduces a tutorial on using a proximity sensor with an Arduino board. It explains the basic components of the sensor, including an infrared emitter and receiver, and how they work together to detect objects within a range of 2 to 60 centimeters. The tutorial covers circuit diagrams, source codes, and a guide on how to subscribe to the channel for more content. The sensitivity of the sensor is adjustable via a potentiometer, and the connection process to the Arduino is detailed, including the use of jumper wires and specific pin connections.

05:02

🔍 Calibrating and Testing the Proximity Sensor with Arduino

The second paragraph delves into the calibration process of the proximity sensor, which involves adjusting the potentiometer to set the detection distance and using an obstacle LED for visual feedback. It also covers the uploading of the provided Arduino code, which includes pin declarations, setup functions for serial communication, and the loop function that reads the sensor's state and controls a buzzer accordingly. The code checks for a low signal indicating an object's presence and toggles the buzzer and prints messages on the serial monitor. Additionally, the paragraph suggests modifying the code for controlling other devices like motors through a relay module and refers to a related tutorial for further guidance.

Keywords

💡Proximity Sensor

A proximity sensor is a device that detects the presence of nearby objects without physical contact. In the context of the video, it is an infrared (IR) sensor that emits IR signals and detects them when they bounce back after hitting an object. The sensor's theme revolves around its ability to operate devices based on the detection of objects within a specific range, as demonstrated with the Arduino board.

💡Arduino

Arduino is an open-source electronics platform based on easy-to-use hardware and software. It is used for building various projects that interact with the environment. In the video, the Arduino board is central to connecting and programming the proximity sensor to perform tasks such as triggering a buzzer when an object is detected.

💡Infrared Emitter

An infrared emitter is a component that emits infrared light, which is invisible to the naked eye. In the video, the clear LED acts as an infrared emitter, sending out IR signals that are essential for the proximity sensor to function by detecting objects within a certain distance.

💡IR Receiver

The IR receiver is the component that detects the infrared signals reflected back from an object. In the script, the black-colored IR receiver is responsible for receiving the bounced-back IR signals, which allows the sensor to determine if an object is within its detection range.

💡Sensitivity

Sensitivity in the context of the video refers to the ability of the proximity sensor to detect objects at varying distances or under different conditions. The script mentions adjusting the sensor's sensitivity by rotating a potentiometer, which is crucial for calibrating the sensor to work effectively within the desired range.

💡Circuit Diagrams

Circuit diagrams are visual representations of an electrical circuit, showing the components and their connections. The video promises to include circuit diagrams as part of the tutorial, which would guide viewers on how to correctly connect the proximity sensor to the Arduino board for the project.

💡Source Codes

Source codes are the lines of instructions written in a programming language that control the operation of a device or system. The video mentions required source codes for the project, indicating that viewers will need to use and possibly modify the provided code to make the proximity sensor work with the Arduino.

💡Buzzer

A buzzer is an audible signal device that makes a noise when activated. In the video, a 5-volt active buzzer is connected to the Arduino and is used as an output device to provide an audible alert when the proximity sensor detects an object, demonstrating the sensor's functionality.

💡Calibration

Calibration is the process of adjusting a device or system to ensure it provides accurate and reliable results. The script describes a calibration process for the proximity sensor where an object is placed at a certain distance, and the potentiometer is adjusted until the sensor's LED turns on, indicating accurate detection.

💡Serial Monitor

The serial monitor is a feature in the Arduino software that allows users to view and send data to and from the Arduino board. The video script mentions using the serial monitor to observe messages indicating whether an object has been detected by the sensor, providing a visual confirmation of the sensor's operation.

💡Relay Module

A relay module is an electronic device that allows a low-power control signal to switch a high-power device on or off. The script suggests using a relay module instead of a buzzer to extend the project's capabilities, such as controlling motors or other electrical appliances with the proximity sensor.

Highlights

Tutorial on using a proximity sensor with Arduino to operate various devices.

Introduction to the infrared emitter and receiver of the proximity sensor.

Explanation of the sensor's detection range from 2 to 60 centimeters.

Demonstration of adjusting sensor sensitivity with a potentiometer.

Connection of the proximity sensor to the Arduino board using jumper wires.

Setup of a 5-volt active buzzer and its connection to the Arduino.

Arduino board connection to a computer for programming.

Calibration process of the sensor using an object and the potentiometer.

Download and opening of the provided Arduino IR obstacle sensor code.

Code explanation including pin declarations and setup function.

Description of the loop function and its role in sensor operation.

Condition checking for sensor status and corresponding actions.

Serial monitor output demonstrating sensor state.

Guidance for beginners on uploading code to the Arduino board.

Observation of buzzer activation and deactivation with sensor interaction.

Suggestion to modify the basic code for different applications.

Mention of using a relay module for controlling motors or appliances.

Invitation to subscribe for future tutorial videos.

Transcripts

foreign

proximity sensor with Arduino

I will show you how the sensor is

working and how to operate various

devices with it

this tutorial will include the circuit

diagrams and required Source codes for

the project

so before going to the tutorial I invite

you to subscribe my channel and click

the Bell icon to get the future videos

like this

now let's take a look into the sensor

this clear LED is an infrared emitter

which emits IR signals

when it hits an object it will bounce

back and detects by this black color IR

receiver

it can detect objects within 2 to 60

centimeters

we can adjust the sensitivity of this

sensor by rotating this potentiometer

let's connect this sensor with the

Arduino board

take three male to female jumper wires

and connect them with the sensor

first connect the VCC pin of sensor with

the 5 volt pin of Arduino

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next connect the ground pin of the

sensor with the ground pin of the

Arduino

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finally connect the out pin with digital

pin 2 of Arduino

then take a 5 volt active buzzer and

connect two male to female jumper wires

with the

connect positive pin with digital pin 8

of Arduino

connect the negative pin of the basa

with the ground pin of the Arduino

next plug the Arduino board to the

computer using an USB cable

you will see this power LED is

indicating

the other LED is obstacle detection LED

we can use it to adjust the sensitivity

of the module

to do this calibration put an object in

front of the sensor in required distance

I will put this object in few

centimeters away from the sensor

then I will turn this potentiometer into

the exact place where the object LED

starts to on

then remove the object and observe the

obstacle LED

it should turn off

then place the object again in the same

location

then it should turn on again

now we have calibrated the sensor to use

simna project

now download and open this code named

Arduino IR obstacle sensor

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in first two lines it has declared the

pins which IR sensor and basa have

connected

now let's come into the setup function

from this line it has to start at the

serial communication at the speed of

9600 about rate

from this line it has declared the IR

sensor as a input device for the Arduino

from next line it has declared the

buzzer as a output device for Arduino

now let's come to the loop function

which runs again and again

from this line it treats the digital

input from the IR sensor and saves it in

a variable called sensor status

from this shift condition it checks the

sensor's digital state

these types of ir sensors will output a

low signal when an object is detected

when there is no any object it will

output a high signal

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so if the sensor outputs a low signal it

will check that from this if condition

and execute these two lines

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from this line it will turn on the

buzzer

this line will print and object is

detected message on the serial monitor

if sensor status is 1 it will execute

this else part

this will turn off the buzzer while

printing no objects for detected message

on serial monitor

this line will put a delay of 500

milliseconds before going to the next

cycle

now let's upload the code into the

Arduino bow

if you are a beginner for Arduino

programming and don't know how to upload

codes for the Arduino board please watch

my previous tutorial called Arduino

tutorial for beginners

I will put its Link in the video

description

ok now keep an object in front of the

sensor and observe

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yes you can see that it will turn on the

buzzer when we keep the object near

sensor

and it will turn off when we take it

away

at the same time open the serial Monitor

and observe the text on it

it also shows the relevant state of the

sensor

we can modify this basic code to do

various things

if you want to run Motors or any other

electrical appliances from this IR

sensor you can use a relay module

instead of this buzzer

I have created a very detailed tutorial

about the way of using a relays with

arduino's

please watch it and get an idea about it

I will put its Link in the video

description

this is the way of using an IR proximity

sensor with Arduino

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don't forget to subscribe my channel to

see my future videos like this

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