Creating my own TV remote control

Hey guys, recently I am playing around with the IR sensor used in television. So, I deal with the TV remote control. I would like to ask that how am I able to make my custom remote control ? I need encoder IC ? Or how can I do it instead of using those ready-made remote control ?

Thanks for help ! :slight_smile:

http://www.yourwarrantyisvoid.com/2012/07/10/hardware-remote-control-your-arduino/