I DID IT!
My first SMD-soldering job, with simple tools and after looking at some tutorials about soldering.
It came out pretty nice in my opinion, but damn, that atmega is a *** to solder...
Anyway, if people without SMD-soldering experience want to try this, here is a big tip: GET SOME FLUX! I'm serious, it's like magic.
Some pics, sorry for the bad lighting, I don't understand cameras
I tested the controller with the code from Bpiphany, the man himself, and everything works.
Now I'll try to make it work with PS/2 and different layers: QWERTY layer, COLEMAK layer and DVORAK layer.
Wish me luck