I just updated the article on my DMXSpot project.This picture shows the fist good version of the PCB for building simple LED projects with DMX control. It
contains only the parts needed to receive a DMX signal including the isolation parts known from the DMXShield and 3 MosFets that can drive some amperes of load. That should be enough to control a huge amount of LEDs or some power LEDs.
The schema and the PCB eagle files are available in the download from the article.