I want to sync from LTC (SMPTE from tape) to MTC on my daw.
I'll grant that you might know what that means. I haven't a clue. Looks to me like you threw some Scrabble tiles in a blender without the top on.
I stumbled upon this
Next time, pay attention to where you are going.
However I don't know what needs to be done to use this code
Well, you need an Arduino... Maybe some other stuff, too.
should I just upload the code?
No. Not until you've paid the royalties.
Why didn't you just try that?