IR Remote Sensor

Infra-Red Receiver (IR receiver):

An IR receiver is a device that receives infrared light and gives an output depending on the signal received.

It decodes and tells the type of signal received. It is present in all the devices that are controlled using IR remotes.

This is basically a mini project to learn about infrared light. It is an IR remote tester which can be used to test an IR remote whether it is working or not.

IR remotes are basically TV or music player remotes.

The circuit makes use of an IR receiver which gives a repeated high and low output when it receives infrared light.

TV remotes have an IR LED in front of them which is used to transmit signals so if the LED is working and the receiver is receiving, that means the remote is working.

Since infrared light has a higher wavelength than our eyes can see, so we are not able to see it however it can be seen clearly using a camera.

The circuit is so modified that if you press a button on the remote, an LED will glow indicating that the remote is working.

• IR receiver (TSOP)
• bc557 transistor
• 10uf capacitor
• 1K resistor
• 220 ohm resistor
• LED

Connect everything according to the layout given above. Refer to the image above for pin identification of the components.

Connect a 9V battery to the power rails and switch it on. Now bring an IR remote near it and press any button. The LED would glow indicating that the remote is working.

Use a 6V battery instead of a 9V as TSOP can handle voltages upto 6V only. Giving it a higher voltage can damage it however it still works with it.

Also use a 470 ohm instead of 220 ohm connected to the LED for better results.

To look in detail about the circuit connections and working, refer the below attached youtube video link:

https://youtu.be/ZWyPl7_8quY

Thanks for using your time reading my Instructable.

Happy learning!