Doblo factory - OpenScad modules for building lego-compatible structures

A set of OpenScad modules to produce "Playmobile-like" Duplo and Lego-compatible structures. Also can be used to produce DUPLO/LEGO-compatible bricks and to create mashups (see other things I made).
See also:
* http://www.thingiverse.com/thing:2714 (example of a mashup)
* http://www.thingiverse.com/thing:31284 (castle kit)
* http://www.thingiverse.com/thing:33001 (thesis project board)

Credits: This work is based on
1) The parametric lego duplo by Domonoky ( http://www.thing