Reply to Home made midifighter(or something..)

Hi to all,sorry for my english but I'm italian.
The midifighter is an incredible tool for djs...really, and I want something similar but I'm a fan of DIY and would be too easy to buy the kit.
I would build something similar starting from a cheap numeric keypad,traktor recognized the keypad as a simple keyboard.
I created a simple mapping with cue points, play, pause and sync it works well but I want to use the original midifighter tsi it's possible?