IIRC the "scope_clock" directory is the most complete. 

This is a mess but it should contain everything including the 7.3 experiment..

DO NOT ASK SUPPORT FROM DUTCHTRONIX FOR THE EXPERIMENTAL FIRMWARE. 

http://dutchtronix.com/ made the original dutchtronix avr oscilloscope clock. The software is from jdr@dutchtronix.com

THE OSCILLOSCOPE CLOCK , IIRC, WAS DISCONTINUED BY DUTCHTRONIX, BUT ITS PRESENT STATE IS NOT KNOWN, AND SPARKFUN WAS MAKING KITS WITH THE SAME KIND OF FIRMWARE BUT A NEWER PROCESSOR, IN COLLABORATION.

THE O-CLOCK WAS DISCONTINUED BY SPARKFUN.