Making Copyleft Hardware

The spirit of the Free Software revolution has also reached
the more traditional world of hardware, but many challenges
remain.
This presentation will review the objectives and constraints
of copyleft hardware, examine their practical implications on
design, tools, and the general workflow, and illustrate how
this works in real life with examples from the Qi-Hardware
project (Ben NanoNote, Ben-WPAN, Milkymist One, and others).