I´m trying to use t a 32 x 32 led module with Arduino mega to display text but the modules i bought from China have an N pin instead of the D pin, is there a library for this type of module?
Please read the how to use this forum sticky post, it will show you how to ask a question.
In particular you need to post a link to what you have bought. Even then all we can do is to try and find the data sheet of what you have got to see how it needs wiring up.
We only know what you have told us and so for you have told us very little.