Working of an IR Sensor

This video explains the working principle of an IR sensor and its applications. You can build your own IR Sensor with the help of circuit diagram shown in this video.

An IR Sensor is an electronic device which senses certain characteristics of its surrounding by either emitting and/or detecting infrared radiations. A PIR Sensor is the one which works by detecting the heat or IR radiations emitted by objects. IR Sensor has an IR LED as a transmitter and a photodiode as a detector. It can be used for many applications depending on the requirements.

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[varunkavil]

The best video on ir sensor module I found, exactly what I was looking for, thank you TechWeek. . .

[shvideo]

Excellent video with a very practical circuit, and great explanation. Great job. Thank you for sharing your knowledge.

[muhammadatif]

Very helpful dear may God give you great respect

[Iamsuccesspro]

In your thumbnail picture you show 100k for it, glad you corrected it in video

[lemanishareddy]

Can do video on working principle & circuit diagram explanation of line follower robot by using IC L293D plzz sir

[ahmadnicolas]

very helpful video. I need some help w/ a project where I need to make an IR sensor from scratch with blank pcb. I need to know whwere I connect my power source

[incxxxx]

For IR LED 100K is much much too big. It should be about 100 Ohms.

[Inquire]

"Thank GOD", and thank you very much for your support and time 😉 What is the MAXIMUM distance you have tested the unit for 🤔 Let me know 😎 I look forward to hearing from you 😎🙏🏾😎

[blameyourself]

@TechWeek. Could you please be so kind as to tell me the identification code on the IR and LED and photodiode? Thanks mate.

[balajisubramanyammk]

Hi does minor change in resistor value makes circuit not to work??

[intannoorliana]

ir sensor is what order instrument? zero, frist or second order instrument?

[abdulrashidsinancu]

I have some doubt how can I contact you

[Iamsuccesspro]

And LEDs ate drawn with arrows pointing out

[vamsikrishna]

bro what about the output pin in sensor u have not shown it in diagram

[frankchang]

Thanks for your sharing. May I know how max far it can detect?

[kimvuivoon]

Hi, How to inverse the range of Ir sensor to about 1-2 meter?

[maryamomar]

I have a project in physics class about this . Could you explain the part with the various voltages again?

[ahmadfarooque]

0:34 as far as i know photo diode is not the same as LDR...

[AmitSharma-pulz]

English to hindi translation sir sabko fayda hoga sir