...I used an Arduino and my PC to clone an infrared remote control. I used this to automatically turn on an electric heater every morning so my bedroom is nice and toasty when I wake up!
Download the Arduino Infrared Cloner Arduino Sketches and Powershell script from below.
Much of the Arduino code was borrowed from Adafruit.com’s IR Decoder examples. Be sure to check them out if you do a lot of electronics projects!