a Tv-B-Gone made using an Arduino UNO.
All you need for this project is a perfboard a LED, an infrared LED emitter and a pushbutton. Connect the infrared LED on the pin 3 of your Arduino board and your LED to the pin 13. Connect, then the pushbutton on the pin 1. After creating your circuit, upload the pde file with the relative library and your Tv-B-Gone will be ready!