Mukund Sivaraman from banu.com held an interesting interview with Richard Hughes, the maker of the ColorHug colorimeter:
The ColorHug is a colorimeter that can be used to calibrate computer displays. It was created by Richard Hughes (hughsie). It is a fully open hardware project, and the design, drivers and firmware are available on the Gitorious code hosting website.
Read the full interview here: https://banu.com/blog/41/interview-of-colorhug-maker-richard-hughes/
Thanks to Mukund for the excerpt!
More information on the ColorHug can be found on Richard's website: http://www.hughski.com/.