CC2541+Arduino+12v LED strip

Hi I have been looking around and have been able to find the instruct-able "Arduino - Control WS2812b LED strip via Bluetooth with iPhone or Android - YouTube" but as I am so new at all this and frankly not very good at understanding all the code I have been unable to adjust the code to suit my 12v LED connecting to the CC2541.

Is there anyone that can give me an insight on what part of the code to change so I can use the tutorial for the LED strip I already have and the CC2541?

All the help is very much appreciated.

Thank you in advance