Check out this homemade TV-b-gone gun from modder Ferry over at .
I took 30 IR LEDs and wired them up. A SMD FET switches them on and off and is wired up with a pinheader connector to the TV-b-gone. Internally, the FET is connected to the output pin of the controller, which is also connected to the transistor driving the normal IR LED.
Understanding the TV-B-Gone Gun
The TV-B-Gone gun is an innovative device that allows users to turn off almost any television with the press of a button. This homemade version by modder Ferry takes the concept to a new level by significantly increasing its range and effectiveness. By wiring up 30 infrared (IR) LEDs, Ferry has created a powerful tool that can emit a strong IR signal capable of reaching TVs from a greater distance compared to the standard TV-B-Gone device.
The use of a Surface-Mount Device Field-Effect Transistor (SMD FET) is crucial in this setup. The SMD FET acts as a switch that controls the flow of electricity to the IR LEDs. When the TV-B-Gone controller sends a signal, the FET switches on, allowing current to pass through the LEDs and emit the IR signal. This setup ensures that the IR LEDs are only active when needed, conserving power and extending the life of the device.
Building Your Own TV-B-Gone Gun
For those interested in creating their own TV-B-Gone gun, the process involves several key steps. First, gather the necessary components: 30 IR LEDs, a SMD FET, a pinheader connector, and a TV-B-Gone kit. The TV-B-Gone kit typically includes a microcontroller pre-programmed with the codes to turn off most TV brands.
1. Wiring the LEDs: Arrange the 30 IR LEDs in a pattern that maximizes their coverage area. Solder the LEDs together, ensuring that they are all oriented correctly to emit IR light in the same direction.
2. Connecting the FET: Solder the SMD FET to the pinheader connector. This connector will link the FET to the TV-B-Gone controller. The FET should be connected to the output pin of the controller, which will trigger the FET to switch on and off.
3. Integrating the Controller: Attach the TV-B-Gone controller to the pinheader connector. Ensure that the controller’s output pin is correctly connected to the FET and the transistor driving the normal IR LED.
4. Testing the Device: Once assembled, test the TV-B-Gone gun by pointing it at a TV and pressing the activation button. The IR LEDs should emit a signal that turns off the TV. Adjust the positioning of the LEDs if necessary to improve the range and effectiveness.
Head on over to Hacked Gadgets Forum for full details of how it was made.
Have a look at our handy guide which explains the difference between LCD and LED TVs.
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