Level:- Intermediate
You Require:-
1. IC 555
2. Capacitor 470µF
3. Resistors 22kΩ, 4.7kΩ, 100Ω
4. Potentiometer 10k
5. IR LEDS X 2
6. A 9V battery
Do you have a sibling who always snatches the TV remote from you not letting watch your favorite shows? Want to take revenge on him/her ? If yes then read more to know how. The circuit below shows you how to make a device which can temporarily stops your remote control from working when its activated.
Before going into the circuit diagram. first let me explain you how a TV remote works. Most of the remotes use a infrared signal to communicate with the device. When you press a button in the remote, a microprocessor(Just assume as the brain of remote for now) generates a
series of binary pulses, which the infrared receiver located inside TV or DVD player or other appliance attempts to decode into
a particular function. so ultimately the remote sends zeros and ones in a specific order at a rate of 38kHz to 40kHz depending on the model to the receiver.
Now to confuse the remote control receiver we use our device which continuously sends zeros and ones at same frequency of which the remote works. Since we are really not sending any information to the device, so it does nothing. And since the receiver is busy listening to our blank signal it would not respond to the original remote control.
Here is the circuit diagram
The heart of the circuit consists of a 555 Timer IC which is responsible for producing the desired frequency we require. The circuit is designed in such a way that the frequency can be adjusted between 30kHz to 50kHz using the potentiometer VR1. This is made to ensure that the device works with all devices as different devices work with different frequencies. You will have to set the frequency exactly for a particular device using trail and error method.Simply switch ON the device and just make sure that the two infrared LEDs point towards the target appliance. Since the circuit requires 9Volts, you can simply use a standard 9V battery to power it up.
Well since the device shouldn't be visible to your enemy's eyes, you may have to solder the components onto a universal PCB of small size.
Click here to view some YouTube videos on How to Solder.
After the device is ready, place it some where nearby you target appliance (TV, DVD player, etc) under a chair or sofa or where ever its not visible and i'm stressing on this point again, The LEDs should point towards the target appliances receiver and the frequency should exactly match the appliances frequency.
You Require:-
1. IC 555
2. Capacitor 470µF
3. Resistors 22kΩ, 4.7kΩ, 100Ω
4. Potentiometer 10k
5. IR LEDS X 2
6. A 9V battery
Do you have a sibling who always snatches the TV remote from you not letting watch your favorite shows? Want to take revenge on him/her ? If yes then read more to know how. The circuit below shows you how to make a device which can temporarily stops your remote control from working when its activated.
Before going into the circuit diagram. first let me explain you how a TV remote works. Most of the remotes use a infrared signal to communicate with the device. When you press a button in the remote, a microprocessor(Just assume as the brain of remote for now) generates a
series of binary pulses, which the infrared receiver located inside TV or DVD player or other appliance attempts to decode into
a particular function. so ultimately the remote sends zeros and ones in a specific order at a rate of 38kHz to 40kHz depending on the model to the receiver.
Now to confuse the remote control receiver we use our device which continuously sends zeros and ones at same frequency of which the remote works. Since we are really not sending any information to the device, so it does nothing. And since the receiver is busy listening to our blank signal it would not respond to the original remote control.
Here is the circuit diagram
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| Click On Image To Enlarge |
Well since the device shouldn't be visible to your enemy's eyes, you may have to solder the components onto a universal PCB of small size.
Click here to view some YouTube videos on How to Solder.
After the device is ready, place it some where nearby you target appliance (TV, DVD player, etc) under a chair or sofa or where ever its not visible and i'm stressing on this point again, The LEDs should point towards the target appliances receiver and the frequency should exactly match the appliances frequency.
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