First of all thank you very much for reading my instrcutable.As,we all know that the TV remote is the cause of fights among  us and our siblings(specially the younger ones).So, was my case .I and my younger sister had a quarrel very often over the remote.So, I decided to do something about it.
I searched the website  and found this project by Kipkay .I decided to prank my sister by making the remote jammer.The remote will be with her but what purpose does it serve if it does not work!!!

Keep on reading the instructable to find out how to make it.

                                                    PLEASE IF YOU  LIKE MY PROJECT PLEASE VOTE FOR ME

Here is ready of the thing in action(i coudn't film it when i pranked my sister,the cameras too big and it could make her suspicious!!girls you know!!!!!!!!)-

Step 1: How Does This Really Work ?

The concept is pretty simple and easy.You press a button. When you do that you complete a specific connection. The chip senses that connection and knows what button you pressed. It produces a morse-code-line signal specific to that button.

The transistors amplify the signal and send them to the infrared LED, which translates the signal into infrared light. The sensor in the TV can see the infrared light and "seeing" the signal reacts appropriately.

The frequency of this transmission is between 35kHz to 40kHz(38kHz in most of them).What the jammer does is that it sends out a steady stream of binary code at the same frequency as of the remote.The TV cannot decode as it contains no information.

The information transmitted by the remote does not get pass through as the jammer is on and does not respond at all.
So, the remote is jammed and you can tune in on to one channel and give away the remote.

Step 2:

The parts required are very few,cheap and easy to get.Those of you who want to buy them online I have supplied   links against each components.

COMPONENTS                                                                                    MOUSER          DIGIKEY

1. NE555 timer IC                      X  1                                                        BUY               BUY
2. 1N4148 Diode                       X   2                                                       BUY               BUY
3. 10k Ohm variable resistor     X   1                                                       BUY               BUY
4. 1k Ohm resistor                    X   1   (BROWN BLACK RED)               BUY               BUY
5.  470 Ohm resistor                 X   1  (YELLOW VIOLET BROWN)       BUY               BUY
6.  560 Ohm  resistor                X   1  (GREEN BLUE BROWN)             BUY               BUY
7.  180  Ohm  resistor               X   1  (BROWN GREY BROWN)           BUY               BUY
8.  10nF Ceramic Capacitor     X    2   (103)   
9.Infrared LED                          X    2         
10. Switch                   

For information on resistor value and capacitor code refer to this instructable of mine.

1. Soldering Iron
2. Solder wire      (Want to make a soldering dispenser like mine?. click here)
3. Soldering  paste.
4. Wires
5. General Purpose PCB
6. 9V Battery or Adapter
7.9V battery holder
8.Plastic Box

Step 3: The 555 Timer

The 555 timer is a very common IC.The only reason I laid stress on it is that when a person solders ICs(Intergrated Circuit) the first time he/she may face problems.Here is a brief description of the IC I found on wikipedia-

The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, as an oscillator, and as a    flip-flop element. Derivatives provide up to four timing circuits in one package.

It  has 8 pins.The first pin is located on the left of the grove as seen above in the picture.Also, the functions of each pin is shown.(image courtesy:engineers garage).

This instructable should explain you well all the things  about the IC.

Step 4: Putting Everything Together

Now, all you have to do is to assemble everything on the PCB and solder it.(see the images)
Also, if you don't know how to solder read this great instructable.
After you put everything together look for a small plastic or cardboard box to put it in.
There are a few things which you should keep in mind while soldering the components.

1.The transistor should be soldered as quickly as  possible, because they are heat sensitive.So, after soldering the circuit  I suggest that you must check whether its working or not.( test transistors )

2.The same thing is true for LEDs also as they are very much heat sensitive.Too much heat may cause damage to them and they may not work or will not give peak performance.


If you make the circuit and still it doesn't work then probably there is nothing more frustrating than this.So, here are a few guidlines you can check on if your circuit doesn't work -

1.The main reason is loose connections.Sometimes, the connections are weak and causes the circuit not to work.

2.The second thing is short circuiting.In an attempt to make the circuit small and compact there might be short circuiting so check for them.
3.If you are new to electronics or do not have much experience working with ICs than probably check on the pins of the IC whether they are are connected correctly.
4.Check whether the transistor is positioned correctly.Generally, by mistake we connect the pins of the transistor wrongly.
5.As I told earlier the transistor may not work because of excessive heatning.So,check them if they are working.
6.This thing is not so important but check if the diodes are connected correctly i.e, according to their polarity.
7.If everything is correct and there is nothing wrong try replacing the LEDs.

Step 5: Tips and Tricks

Here are few tips and tricks which you can  use while making the circuit-

1.The transistor should be soldered as quickly as  possible, because they are heat sensitive.So, after soldering the circuit  I suggest that you must check whether its working or not.( test transistors )

2.The same thing is true for LEDs also as they are very much heat sensitive.Too much heat may cause damage to them and they may not work or will not give peak performance.

3.Make the circuit as small and possible, as it will be easier to hide it, but don't make it too  tiny as it may be a problem if the circuit does not work and you will have to identify the problem.

4. For making connections between the pins of the IC and the far off components I use insulated copper wire(from small transformers like the ones in CFLs) as seen in the pictures.With the match stick just burn off the insulation from  one end and pass it through the holes of the PCB.

5. If you don't get the components and can't afford to shop online( I am an example) you can probably find the components in old circuit boards.

6. Not able to find resistors?Try putting them in a parallel series combination,like I did.For example I did not buy the 560 Ohm resistor this is what I did-
Put two 1k ohm resistors in parallel , then two 100 ohm resistors in parallel and lastly put one 10 ohm resistor in series.
confused? see the diagram above
1K and 1K in parallel means 500 ohms.Next, 100 ohm and 100 ohm in parallel means 50 ohm.Total is 550 ohm + 10 ohm resistor.We get 560 ohms in total.And I bet most of you will prefer to buy them instead after reading this!!

7. If you do not get Infrared LEDs ,then try at a electronics repair store where u can probably get old TV remotes salvage them and you have what you need(you can even use the casing to put the circuit  board in).

Step 6: Thanks Again!!!!!

In the end I only want to thank you for reading my instructable.
I hope you get everything and If you have any questions please comment below or PM me.

And dont forget to take it to your friend's house and fool them.
Happy soldering!!!!
And happy April Fools Day(This instructable  is not an April Fool Prank :P )!!
<p>canyou help me to create a 433 mhz jammer?</p>
So if you win shouldn't Kipkay win since it was originally HIS instructable? I'll ask him lol
ya!! I will do that only if I win!! <br>And thats the toughest part i guess!! <br> <br>Thnx fr viewing my ible. hope u liked it <br>Pranjal
Is it necessary to use the timer chip and all of that circuitry? If the tv is getting a constant stream of IR light wouldn't that be enough to confuse and jam the remote? It seems like it would be a lot simpler to just have 2 IR LED's connected to a battery.
Yes it is necessary to use them. <br>Coz if u connect it directly the IR LED does not have the frequency at which it should transmit the pulses.Its like telling someone to run but not telling how fast to run. <br>Thnx for the comment. <br>Pranjal
Ah I see it now. Very nice 'ible! voted for you in the april fools contest. good luck!
Thanx a lot!!
This reminds me of when my son played a trick on me one night when I was watching TV. He had a remote outside that would turn off the TV. I would turn it on and it would go off. Finally I quit watching TV because I thought there was something wrong. After he got out of college he told me about his prank! Hope you had fun! I know he did! <br>sunshiine
Be carefull that your son does not get to know about this or else he will prank you again !! <br>And thanks for the comment <br>Pranjal

About This Instructable




Bio: I like playing football,basketbal ,making circuits and doing science.
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