How to Make IR Sensor

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Introduction: How to Make IR Sensor

Ir sensor used to dectect any movement made in front of the two sensors which is IR led and photodiode.

The range of Ir sensor can be adjusted using variable resistor(preset) . the range depends on Quality and specification of Ir led and Photodiode used.

Ir sensor can be used for making hobby projects like Line follower robot without using a microcontroller, obctable detector robot or obstacle avoider robot.

Ir sensor can also be used for home automation like automatic water dispenser, automatic sliding door,automatic sliding door.

Since it has wide range of applications it can also be used for security purpose for detecting trespassing and you can create your own applications too.

Step 1: Gather the Components and Tools

1 x 8 pin IC base

1 x LM358

1 x photodiode(5mm)

1 x IR led(5mm)

1 x 10k preset (variable resistor)

1 x 10k ohm resistor

few wires and male header pins

soldering iron and solder

wire cutter

Step 2: Placing the Components

Place all the components according to circuit diagram I given above

Please use IC base instead of directly soldering connection to IC because if your soldering iron is hot enough to crosse its maximum penetrating temperature, the internal circuit of IC will get burn and then your IC is useless.

So keep in your mind that whenever you're going to build circuits, use C base to protect IC and using IC base you will use IC for other projects also.

Photodiode also to be placed in reverse bias as photodiode works good in reverse bias junction instead of forward bias . Now if dont know what is reverse bias and forward bias, dont worry about it . Just connect anode of photodiode to 10K ohm resistor.

Connect pin 3 of IC base to the junction where anode of photodiode and resistor connect.

Connect pin 2 of IC base to 3rd pin of variable resistor.

Step 3: Done ! Just Anything As Output

Connect output devices to 1st pin of IC base.

output devices can be any such as relays,Led ,buzzers,motors ,arduino boards,microcontroller,etc.

You can make any desirale product from using Ir sensor such as use for home automation,obstacle detection, or use for line follower , or in security purpose where to detect trespassing .

Thanks for reading my post. If you like it,please up vote my post

Step 4: Video

watch my video for reference for how to make IR sensor. Enjoy!!!

link for my video

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    9 Discussions

    0
    abhijitdutta2005
    abhijitdutta2005

    Question 3 months ago on Introduction

    Hi. Thanks for the circuit. I wired it up in bred board except the output resistor and LED. The circuit works fine but the output Low level remains at 1V ( 900 mV). Why is this? All voltages and ground are fine ( using 5 volts) and get nice pulse on detection going up to 4.5-4.7 volts. But due to this low level output my digital logic driven by this output is not working properly. Can you please help?

    0
    VinayakJaid
    VinayakJaid

    Answer 3 months ago

    For output i used led with resistor so dont use that. directly connect whatever u want to.

    0
    abhijitdutta2005
    abhijitdutta2005

    Reply 3 months ago

    The output was connected to the clock pin of a 74ls74 flip flop. I figured that the FF was faulty. Both clock pins were staying at 1v when powered. The whole lot of 10 74ls74 was bad. I changed to a 74ACT74 and it worked. Thanks much for your response.

    0
    jasveerg
    jasveerg

    Question 2 years ago on Introduction

    i want to make a automatic soap dispenser with IR sensor. i want that once IR sensor detect hand, solenoid valve on for adjustable time (0-10 second) and then off, it turn on again when detect. i don't understand how to make it. i try to make it but soap comes continue. please help

    0
    Rahul guglani
    Rahul guglani

    Answer 4 months ago

    use NE555 ic in monostable mode

    0
    DIY Hacks and How Tos

    Nice project. If you get a chance it would be great if you could take some stills of the assembly process from the video and post those pictures in the steps. Still images are a lot easier for mobile users to view.

    0
    VinayakJaid
    VinayakJaid

    Reply 5 months ago

    thanks for your reply . i will surely implement your suggestions in my next video.

    0
    manasyadav1472
    manasyadav1472

    Question 1 year ago on Step 1

    What kind of wire I have to use in this

    0
    VinayakJaid
    VinayakJaid

    Reply 5 months ago

    any electrical wire less than 2 mm