Doepfer

Hello, Im a new comer to the world of modular synths, and i am really interested in creating 
my own drum machine from doepfer modules - I have looked around and around for help on 
this, but to no joy. There was a post on here from 2 yeas ago, but the guy actually bought 
Drum modules from Analogue solutions.

Im more interested in creating my own drum sounds from scratch and be able to have the 
flexibility to tweak..

So my question is - what would be he most basic modules i could get away with buying to 
make my own electro drum sounds ? Or is that a neverending question?

Thanks.