Dobrica Pavlinušić's random unstructured stuff

OV7670: Revision 1

* http://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/f2012/krs228_dmw255/krs228_dmw255/BlackHack.html
* http://embeddedprogrammer.blogspot.com/2012/07/hacking-ov7670-camera-module-sccb-cheat.html