Hardwire RGB LED Strip to pi

Hey, after discovering that connecting to my Bluetooth controller didn’t work (still thanks for all the help)
I wanted to just connect my 3 led stripes to my raspberry pi 3 with a simple cable(one 12volt in, r,g,b to the pi) is there any premade gpio code I can use ?
I have no idea how to do this from the software perspective…

Found these links for RPI with LED strip, the second link has some python code you can use with OH.

There are several more if you do a quick google search.

Also a link for the Exec binding if you plan to use a python script.