Audin is courseware for a university Auditory Instrumentation course. It was developed at WSU in 2004, under a contract from "Fund for Improvement of Secondary Education", a branch of the federal Dept of Ed. ... The best part is the interactive breadboard, which gives you a good introduction to basic electronics. Start at Lesson 201 to reach it. More description here.
	A set of perception experiments, in Windows EXE form. Described fully here.
	Proportion helper, in Python. Described fully here.
	CSV-to-HTML-table converter, in Python. Described fully here.
	Morse sender with random text generator, in Python. Described fully here.