Infrared remote control tester


This circuit can be used to test any kinds of infrared remote controllers! It is simple and cheap and the circuit needs only 3V power to operate so 2×1.5V batteries can use to power the circuit, you can replace The LED using a 3V buzzer to produce a “beep” sound instead of light. but you may need to remove R2.


1.R1(resistor – 470K

2.R2 – 47 ohms(can be removed if a buzzer used)

3.SW1 is optional (not neccessary)

4.Q1 – any kind of cheap infrared photo transistor

5.BC327 PNP transistor

6.D1 – LED (any type of low current and color)

7.B1 – 3V battery


About Ztronn

hellooo i'm lsid ,i am a DIY (do it yourself) stuff loving kinda guy, i mean i love to build things and posting it on my blogs for the world to see. i love reading about technology and innovation. i love the nature,mysteries of space and of course God. no aliens. kindly let me know what you think about my simple innovations in the comments.
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2 Responses to Infrared remote control tester

  1. - Admin says:

    thank you for the info mr.mike, i will check it out

  2. Hey, I get a 504 Gateway Timeout error when I browse this website. This sometimes indicates the webhost did not get a timely response. I figured yuo may want to know. Best wishes Mike

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