Today we will discuss about making a TV Remote Jammer. Do you want to get the control of your tv in your home? Want to prevent your wife, kids or mom from changing the channel. Then this tutorial is for you. Most TV Remote works on 32Khz Pulses. A train of pulses with 32Khz frequency is sent by the remote which involves on and off intervals. Using this principle we are going to build this device.
A Remote is used to control our day to day home appliances like TV, AC, Home-Theatre, etc. It works on the principle of IR Rays. They are not visible to our naked eye but can be seen using cameras. A hex code is assigned to the buttons in remote. Whenever we press a button that code is generated and it is converted to IR Pulses. These codes are detected at the receiving end, decoded, then compared by microcontroller and then the corresponding action is performed.
Materials:
- +5v power supply
- IR (Infra Red) LED
- 555 Timer IC
- 220Ω, and10KΩ resistors
- 2N2222 transistor
- 100KΩ preset or pot
- 10nF or 22nF capacitor
Working:
A 555 timer is used to generate square waves. We are generating square waves at 32 KHZ. The IR Led is connected to collector of transistor. Output i.e square waves is given to base. So the transistor is acting like a switch to control the pulse.
We already said that signal from remote involves train of pulses. So we will be generating continuous pulses at 32 Khz frequency. The Tv will be continuously receiving it but it will be not able to decode anything. So when some one presses button on the remote that signal and our signal both will get mixed and the tv will not able to decode any information. It is like adding a noise to the original signal. So finally the remote won't work unless you off this circuit.
Simply hide this device some where like inside a showcase directing towards Tv, Sit back and Relax. Have Fun.
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