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TV Remote Jammer!by Kipkay on October 22, 2007

Table of Contents

intro:   TV Remote Jammer! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

step 1:   What you need... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

step 2:   Install the circuit... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

step 3:   Test it out! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

step 4:   How Does it Work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Related Instructables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Advertisements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

http://www.instructables.com/id/TV-Remote-Jammer!/

intro:  TV Remote Jammer!I've had a few scuffles in my house over the TV remote so I decided to do something about it. I built a circuit that will block my TV and any device I choose from getting asignal from the normal remote control. I turn an ordinary remote into a jammer and the remote still works normally! Watch the video to see it work.

Video

step 1: What you need...I chose to use a Sony remote control (SR-P30) because it has plenty of room inside to add my circuit and a 9 volt battery while keeping the remote fully functional.

The circuit parts:

1. Small circuit board2. (1) 10k variable resistor3. (1) 555 Timer4. (4) resistors. 470ohm, 1k, 560ohm5. (2) high speed switching diodes 1N41486. (1) transistor - BC5577. (2) Infrared LED's8. (2) 10nf capacitors9. (1) 9 volt battery

Build the circuit based on the diagram below.

http://www.instructables.com/id/TV-Remote-Jammer!/

step 2: Install the circuit...I hot glued the circuit inside the remote control. I also had to remove 2 posts to make room for the 9 volt battery. Tape down the LED's near the existing LED. I used theexisting switch on the remote and wired my 9 volt battery to it.

Image Notes1. I tapped into this switch for my power2. The 2 new IR LED's taped down3. Jammer circuit with 9 volt battery

step 3: Test it out!You may have to tinker with the 10k pot to get the frequency right for the device you are targeting. Adjust the pot while the remote is 'on' and test it with the originalremote until the jammer confuses the device. Now, just pull out the remote whenever you need to take control of your device and no one will have any idea what's goingon. You can bring this to a friends house and drive them nuts! Have fun, be safe!

http://www.instructables.com/id/TV-Remote-Jammer!/

Image Notes1. 10k variable resistor needs to be adjusted to obtain the correct frequency.2. Power switch wiring that goes to the remote switch

step 4: How Does it Work?This is a pretty simple concept. When you press a button on a remote crontrol for a TV, stereo or other IR device, it creates a series of pulses which the receiver in thetarget device; in this example, a TV, decodes into the corresponding function. This frequency is around 35-40kHz. To confuse the receiver, this jammer sends out asteady stream of binary code (1's an 0's) at the same frequency, but contains no information to decode. The receiver basically sits there and does not respond at all andthe real information cannot get through to it as long as the jammer is on. Voila! You've 'jammed' your TV remote!

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http://www.instructables.com/id/TV-Remote-Jammer!/

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Comments50 comments Add Comment view all 188 comments

 ewilhelm says:  Apr 1, 2008. 9:37 AM  REPLYThis project was featured in Popular Mechanics Top 5 April Fools' Day Pranks!

 Paladinsfo says:  Mar 28, 2009. 1:27 PM  REPLYYou can get any of the parts you need through mouser electronics or Digi-key.

 B.F.L.M says:  May 24, 2009. 2:30 PM  REPLYor Radio Shack

 chickenlinux says:  Jul 22, 2009. 6:08 AM  REPLYWhen I go into Radio Shack, they have almost NO parts :( That might just be where I live though...

 Meta1203 says:  Feb 20, 2009. 9:53 AM  REPLYWhere can you get the curcit boards? And, to those who need parts, try mouserhttp://www.mouser.com. It has over 1.6 million parts.

 chickenlinux says:  May 26, 2009. 6:07 PM  REPLYhttp://digikey.com is also excellent, but it's more for companies and stuff.

 Redgerr says:  Jul 22, 2009. 5:15 AM  REPLYamazon allways has some parts ;)

 joey9360 says:  Jun 18, 2009. 9:16 AM  REPLYwill it work on infra-red cameras?

 B.F.L.M says:  Jun 3, 2009. 4:15 PM  REPLYHow do yo adjust the frequency??????

 scarabeetle101 says:  May 31, 2009. 10:09 AM  REPLYIf I just hook a couple of infra-red LEDs to a battery will that work?

 ledzeppie says:  Oct 22, 2007. 10:24 PM  REPLYnice vid....ive always been worried about making one of these because i hear that they can in fact screw up some tvs. ive heard of people that had to buynew tvs because they made one....id rather just take the batts out of the remote or unplug the tv and blackmail em with em.. sometimes when my sis has thecable box remote ill jump and get the tv remote and put it on mute or just turn off the tv completely.... works 60 percent of the time

 Kipkay says:  Oct 23, 2007. 5:52 AM  REPLYOh crap, here we go again! Can't I do a single Instructable without someone claiming it is harmful, illegal, immoral or dangerous?? Next time I will do oneon how to watch paint dry. But then again you could hurt your eyes doing that. Geez!

 shouldawoulda says:  Apr 27, 2009. 5:12 PM  REPLYYhep! those are the type I am trying to remove from nieghbor hood right now,need something safe yet annoying ,know what I mean?

 B.F.L.M says:  May 24, 2009. 2:27 PM  REPLYHow do you type in superscript and subscript?do you use html?<s>hmmm</s>

http://www.instructables.com/id/TV-Remote-Jammer!/

 badrang4 says:  Oct 23, 2007. 12:25 PM  REPLYI hear ya budy

 gdawg says:  Oct 23, 2007. 11:32 AM  REPLYOMG. I heard these things violate FCC rule 332.23.a64 part d, subsection F, paragraph 9. This is so illegal, I can't believe you do these things.According to my research on the internets, this is very un-american, as only communists make these, and kittens die from exposure to the cancerrays.

In seriousness: how does this jammer work? Is it basically so 'bright' that the receiver doesn't distinguish the IR signal from the real remote? Sorry, Ishould go to your website; but at the same time I think an instructable should have more instructions on it, rather than a link to the instructions. This isa cool device nonetheless.

 James (pseudo-geek) says:  Oct 31, 2007. 6:30 PM  REPLYno. the sun ( and light bulbs) puts out enough infrared light to do that.....if it where a problem. the receiver is designed to block out ambient light,and pick up only a certain frequency and signal.

 JamesRPatrick says:  Oct 25, 2007. 7:36 PM  REPLYIt's FCC rule 332.23.a64 part d, subsection F, paragraph 8. Duh.

 Kipkay says:  Oct 25, 2007. 7:52 PM  REPLYClose. It's FCC rule 332.23.a64 part d, subsection F, paragraph 8a, article 5, section 6b.

 JamesRPatrick says:  Oct 26, 2007. 1:56 PM  REPLYHold on, let me check again...Damn, you're right.

 duct tape says:  Nov 9, 2007. 8:38 PM  REPLYlol

 VIRON says:  Oct 23, 2007. 10:09 PM  REPLYFCC does not have a rule about it...Perhaps until someone hooks up a remote jammer to a million IRLEDsand turns off all the TV's in the metropolitan area during the big game.

 kingannoy says:  Oct 27, 2007. 1:11 PM  REPLYNow thát would be a fun project!

 Kipkay says:  Oct 23, 2007. 1:43 PM  REPLYThanks for the input. I've added another step, How Does it Work. Let me know if I explained it well enough. Thanks!

 gdawg says:  Oct 23, 2007. 8:16 PM  REPLYAh, this is definitely well enough. Thanks!

 kill-a-watt says:  Oct 22, 2007. 11:48 PM  REPLYI can't see regular, steady pulses of near IR light doing any damage to a TV, even if he's using three whole LEDs

 salec says:  Oct 26, 2007. 1:18 AM  REPLYOnly remote (pun not intended) possibility I see is if steady (or perhaps "dirty", discontinued by being on the edge of useful range or performing flakybecause of cold solder points) stream was misinterpreted by TV as some unlisted service command which tweaks some important setting. To many"ifs" in there, though.

Besides, even if it was possible, TV repair service would be able to restore it and no material damage would ensue.

 mtxe says:  Oct 23, 2007. 9:50 AM  REPLYI agree if this damaged a TV I'd be very surprised.

Also if this was harmful wouldn't having more than one IR device in your living room be just as harmful to your TV.

http://www.instructables.com/id/TV-Remote-Jammer!/

 sahmeepee says:  Oct 26, 2007. 12:41 AM  REPLYOnly if you cross the streams. That would be bad.

 mtxe says:  Oct 26, 2007. 7:55 AM  REPLYYes a total protonic reversal.

 james.mcglashan says:  May 3, 2009. 3:44 AM  REPLYcan u please make a printed curcit board scmatic as well as the normal scmatic u already have that i can print out and then put the componets on the boardand then solder and please do this for all ur projects please that would be nice and easy and betta for the utube clips lol u can make more betta projects andmore people can make it with ease so they can just print it off on the board and then use it this will also get me used to making printed curcits for the futcherso i can make all of my instructable idears i have in my head much easer and with the printing ability to make betta boards that i need and i am sure i am notthe only person that has the idear of the printed curcit boards but needs more practice...

if u cant can u please do as many as u can so more people can make this and use less solder...

 saintlavin says:  Apr 17, 2009. 4:53 AM  REPLYcan you make a video on how to essamble it? i am very bad in reading schematics

 pyroten says:  Mar 27, 2009. 12:44 AM  REPLYi don't understand the potentiometer. I bought a 10k horizontal trimpot but i'm not sure which of the pins are joined like in the diagram. does the wiperconnect to one of the terminals and does it matter if the terminals are swapped?

 pyroten says:  Mar 27, 2009. 3:10 AM  REPLYoh yea., and i'm only getting 1.2 volts output to the leds which is then shared. so they get about 0.6 vlts each. This is with the variable res. all the waydown to 0 resistance. These are the leds i'm using:

http://jaycar.com.au/productView.asp?ID=ZD1945&CATID=33&form=CAT&SUBCATID=245

This is it:

5MM EMITTING DIODELooks like a 5mm LED & has a blue transparent lens.Specifications:- Forward Current (If): 50mA max - Peak forward current (Ip):1.2A- Forward Voltage (VF): 1.2V @ 20mA - Reverse Voltage (VR): 5V max- Power Dissipation (Pd): 100mW max - Viewing Angle: 30°- Peak SpectralWavelength(IR): 940nm @ 20mA * Spectral Bandwidth (DI): 50nm@20mA- Material: GaAs

can someone please help? : D

 joost53 says:  Oct 14, 2008. 2:17 PM  REPLYit doen,t work for me...

the leds burn but the remote still works, what could it be?

 DemonDomen says:  Mar 24, 2009. 11:32 AM  REPLYMaybe you have the wrong frequency. That's what the potentiometer is for.

 thundaboy1047 says:  May 29, 2008. 2:50 PM  REPLYI dont know where to get these parts....I live on the east coast of the USA. And yes i have radioshacks, but none of them have circuit board parts

 junits15 says:  Mar 20, 2009. 6:48 PM  REPLYGoogle for electronic parts store, click around, who knows what you will find! :D

 randomstufdude says:  Mar 8, 2009. 7:15 PM  REPLYi live on the west coast and every on i have been to has had them. the have labeled compartment drawers they should have them. if not you can alsolook online radioshack.com

 corl45 says:  Jun 8, 2008. 6:36 PM  REPLYif you are OK with buying stuff online try this site: http://allelectronics.com/, ived used it with great results, but if you buy, buy stuff for multiple projectsbecause shipping is a big $7:00

http://www.instructables.com/id/TV-Remote-Jammer!/

 cormac3050 says:  Jun 28, 2008. 6:32 PM  REPLYHow much would afore mentioned shipping be to dublin (ireland)??

 corl45 says:  Jun 28, 2008. 8:28 PM  REPLYi have no idea.. sorry you could see if you can find out.

 thundaboy1047 says:  Jun 9, 2008. 12:38 PM  REPLYThe links not working and allel electronics is not on google so maybe they havea new website?

 corl45 says:  Jun 9, 2008. 5:41 PM  REPLYbought some stuff on thursday and it came saturday, but i live more in the west coast (Utah) , so idk how long it will be for you.

 corl45 says:  Jun 9, 2008. 5:40 PM  REPLYits: all electronics http://www.allelectronics.com/ sometimes there site goes down, but i just visited it.

 Shadow Ops says:  Mar 20, 2009. 1:28 PM  REPLYHa! Does your cheek hurt?!

 mogkb4536 says:  Oct 30, 2008. 10:43 AM  REPLYWhere is the Hex file to program the 555 timer?

 shams says:  Feb 8, 2009. 8:31 AM  REPLYprogram it?why do you want to program it??

 mogkb4536 says:  Oct 30, 2008. 10:57 AM  REPLYnever mined i was thinking straight sorry

 Rs master says:  Mar 1, 2009. 3:57 PM  REPLY

you cant program a 555 timeror can you!!(no really i dont know)

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