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Picture of 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 a signal 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.



Step 1: What you need...

Picture of 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 board
2. (1) 10k variable resistor
3. (1) 555 Timer
4. (4) resistors. 470ohm, 1k, 560ohm
5. (2) high speed switching diodes 1N4148
6. (1) transistor - BC557
7. (2) Infrared LED's
8. (2) 10nf capacitors
9. (1) 9 volt battery

Build the circuit based on the diagram below.
 
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ewilhelm7 years ago
cool
DanM3720 days ago

Is it a LM 555 timer or a NE 555 ?

AdithyaA22 months ago

when he means "be safe" he means dont get arrested for using the device

AdithyaA22 months ago

whats the freguency of yours?

agishero2 years ago
why do we need 2 leds, why cant just 1 led be fine??
Plz answer soon kipkay.

because two LEDs are more powerful than one

There is a howcast video on YouTube showing how to do this exact thing much better than his video or instructable.

Never thought this would be so cool

more projects visit
http://www.excellentminds.in
hbhb3 years ago
1-these circuit design is something really stupid becuse your Power supply is 9v and diode's turn on in 1v together "two diode" they need 2v so that means voltage applied on output of 555 timer!!!

2-after that the collector current is 1 mA "check whit multimeter or data sheet" and it's not enough for turn on a infrared led it shod be 50 mA at least!!!

3-you shod apply voltage to only one pin of transistor...in these circuit you apply voltage on both bass and emitter!!!

all these are wrong in electronic theories so....

COULD YOU PLEASE ANSWER MY 3 QUESTION AND DO NOT REMOVE THEM AGAIN FROM YOUR SITE???
Spell Check?
Higgs Boson3 years ago
This is awesome. But my sister figured out what I was doing, and would not let me continue to hold the remote up. I am going to try and add more infrared LEDs so that it doesn't need to be aimed as precisely and looks less suspicious.
Kip you forgot the 180ohm resistor in the "What you need" section
when some one say's " i use pcb " that means 180ohm resistor cant be forgotten?!
h b3 years ago
hi
i build these circuit whit pcb and it dosen't work!
when you push a button on tv remote you can see LED's light whit mobile camera on top of the tv remote... it show's that LED work ...but in these circuit not?!
sneitzke384 years ago
What 555 chips could I use I am using the 555CN (from radio shack) and my circuit is not working I have it on breadboard right now and am not sure what isn't working

Thanks.
I have it on a breadboard to with a 555CN and is not working etheir. Did you get your fixed and if you did can you tell me how you did yours?
if you like epoxy then use loctite epoxy works like magic
markee23 years ago
got similar circuit schematic but fewer parts. dont know if this one works or not. Or which one is better..   circuit copied from
http://www.simple-electronics.com/2011/09/tv-remote-jammer.html


TV remote jammer.jpg
PoisonMondo5 years ago
can you use a different pot value cause a 10k $9.00 here
only 10 inr in india
It only costs around 2$ at my store. They sell a LOT of stuff.
http://www.halted.com/commerce/catalog/spcategory.jsp;jsessionid=BD906DB46CE24400663B07230F9C0CA2?category_id=1122&czuid=1270689974389
I go there physically. Its located near my house so i dont have to pay shipping
roy19314 years ago
"We've been jammed sir!"
"Raspberry!..."
SPACEBALLS!!!!
Only one man would dare give me the raspberry! LONESTAR!!!!!!!
shalu384 years ago
can anyone plz specify abt the sign of the capacitor
AgentClank4 years ago
where does the 9v negative connect to? and why is there a GND at the bottom?
mogkb45366 years ago
Where is the Hex file to program the 555 timer?
never mined i was thinking straight sorry
hg341 mogkb45366 years ago
you cant program a 555 timeror can you!!(no really i dont know)
no you can't it's a bi-stable timer I.e it has two states,both unstable. you control the flow into the capacitor with the preset, and that sets the reset, fliping between the two states. you can program a PIC chip (progamable input chip) i.e a geinieC08 chip - an 8 pin chip 4 possible out puts - 0,1,2+4 and one input - 3.
i know it was a joke.....(good info though)
shams mogkb45366 years ago
program it?why do you want to program it??
bkaspersky4 years ago
would these work? http://www.cricklewoodelectronics.com/Cricklewood/product.php?productid=20865&cat=0&page=1
help?
B.F.L.M6 years ago
How do yo adjust the frequency??????
you can adust the frequency by adjusting the preset (variable ressistor)
luudvig5 years ago

how could I get a longer range? the one I've built only works when I bring it close to the tv..

you can use tin foil to make a "reflector". Just place behind the LEDs in a three- wall configureation (or a U) and it should up the range if you point it at the set and remove any obstructing materials can't do too much harm. be careful not to short the LEDs out and g-luck!
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