IR Remote Control Jammer





Introduction: IR Remote Control Jammer

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Get your own IR Jammer Kit here.

Look at the IR Jammer project page here.

The IR Jammer is a fun project that provides a bit of safe, non-destructive fun. The Infrared Remote Control Jammer allows you to render all IR remote controls inoperative! The microcontroller in this design allows for all 6 of the main IR frequencies to be targeted making this unit universal. It works by corrupting the data that is being sent by your normal remote controls.

A single press of the button sends out stream of IR pulses from the two narrow beam and two wide beam IR LEDs for 30 seconds. Each press of the button will add 30 seconds to the running timer. For remote operation you can simply connect a button to the On Sw. pads, shorting this input will turn on the IR output until the contact is opened. This would allow the device to be mounted into an old remote, brim of a hat, etc.

The compact design is the size of a 9 volt battery allowing it to be strapped directly to its power source if desired.

Step 1: IR Jammer Overview

The heart of the IR Jammer is a PIC 12F675 microcontroller. This microcontroller has been programmed to reproduce the 6 popular IR frequencies, 30kHz, 33kHz, 36kHz, 38kHz, 40kHz and 56kHz. When the button is pressed two transistors are used to pump infrared data out of the 4 IR LEDs. Using two wide beam and two narrow beam IR LEDs allows good distance and a ease of use. The Green LED is used to indicate power up by blinking 3 times and also to indicate when the jammer is running by a quick flash ever few seconds. When building the kit you can select the power selection resistors to adjust the balance between range and power consumption.

Step 2: IR Jammer Code

After the jammer flashes the green LED to indicate power on the unit goes to sleep and wakes up on a pin change interrupt, this allows it to last a very long time in standby. The PCB mounted push button will wake it up and allow it to operate for 30 seconds for each press and the On Sw. remote switch connection will run the jammer until the switch is turned off. There are 6 assembly language routines that are used for each of the IR jamming frequencies that the device replicates.

You can get the free source code here if you want, or download the HEX file here to burn directly to a microcontroller.

Step 3: IR Jammer Schematic

If you would like to make your own board design have a look at the schematic here or purchase a bare IR Jammer board if you want to build your own using your own components.



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    hi send the schematic of the jammerwith soldering.

    may i get 2-3 uses of it

    So why does it jam? Is it blocking the signal or just bombard the detector with multiple codes ?

    1 reply

    It bombards the detector, not really with codes but with constant
    generated carriers at certain frequencies. Much like old ECM equipment
    worked on airplanes, but with IR instead of RF. Simple? I am making my
    own today (not based on the one shown here), and i used frequencies shown above and some of them works
    against some of devices i have in living room, just need a good led and i
    can jam them! Some frequencies works better and some other are worse. I tried all of above and 56kHz works best against my hifi set. However some other frequencies also works, but range is decreased a lot and to have a good results you have to put jammer 10cm from target (hifi set).

    well it was issued to me in millitary for if we got lost but that was back in 03-04 so i dont think it will be bad to show this but its not working. I think it got fried some how or i left it on to long, eithor way it doesnt work any more ..heres a pic , and its also encoded in some kind of plastic and its called a PHOENIX TRANSMITTER-VISIBLE says for like tapping to vehichles and such or getting rescues attention but it does have differnt patterns. 9v like the above model.So what do you think by the pictures? ow and first pics ive now added to i'bles!

    4 replies

    Thats an IR "illuminator" by the description so that SAR can "see you" from the air without alerting any unfriendly forces who dont have the right equipment. With an IR camera. the illuminator would look light a bright flashing beacon and very easy to spot but remain invisible to the naked eye

    I'm pretty sure most if not all cameras can pick up IR light.

    True. That's a great way to test if tv remotes are working, by the way. Apparently, from what I've heard, some new high quality cameras come with infrared filters, but I've never come across any such cameras.

    well well you say that ALL cameras pick it up? and only high quality infrared filters block it? I prove you wrong here my friend. My iPhone 4 cannot see infrared light out of the back camera but can in the front camera! i have no idea why but im sure it does not have an infrared filter.

    Sure could.

    so thats what in the world that thing is , i got one of those years ago but never really knew what it was for. heh so how can i test myne out to see if its the same thing? looks like it with the leds and to turn myne on you touch metal to meatl and differnt touches couses different patterns.

    5 replies

    Cool. Got a picture?

    good news....the batteries i were using were dead,stuck em to my tounge and noothin,so found a good on and 3 9vs battt. later got it to work, and the programing is with short or long for up 20 secs, and if you short it for longer than 20 secs it displays a constant red light.. Now i tested to see if there were any anonamalys with a am radio but couldnt pick any thing up until it seemed only when the red light was on the antenna? YOU would be my hero if you could explain some simple and crude uses for this purticicular devise and even if it is any thing near what yours is? thank you.

    use a cheap webcam or digital camera to look at it while it is on. if it is working, there will be a redish or purpleish light coming out of it. it may even flood the ccd with so much infrared that the entire screen turns white. note- some cameras have an ir filter that will filter out most if not all of the light, so if it doesn't work, test the camera on a known working ir source- like a remote.

    i believe you have one of these

    yea i got one of those ir remote helecopters for indore use only and i think the signals being jammed..last night it was fine but now i cant get it to work for nothing..and thats pretty impressive you found the nsn number.. whish i could get my old tool box. ):

    jees i should read this more carefully says its a beacon and can penatrate duct tape and many layers of close.. wish it still worked, Wonder why it doesnt any more.And this design is completly water proof.