A homebrew project. All PCB image, microcontroller code is uploaded and free for download. It utilize an Atmel microcontroller and LCD panel. Easy for construction.
http://www.geocities.com/cw19kit
Freeware program which generates standard Morse, Q codes, abbreviations, random characters, and text files. Features Quiz routine and ability to save a .wav files.
http://f1orl.club.fr/cwpeng.htm
Schematic index audio RF power, switching and miscellaneous circuits.
http://www.mitedu.freeserve.co.uk/schematics.htm
Cynlib: open source C++ hardware design class library and simulator.
http://www.forteds.com/index.asp?bhcp=1
schematic shows how the popular CD4013 and the CD74HC74 can be used to generate pulses ranging from nanoseconds to seconds.
http://www.imagineeringezine.com/PDF-FILES/oneshots.pdf
DAG_Stat is an Excel spreadsheet that calculates a wide range of statistics (and confidence intervals) for assessing the performance of diagnostic tests and the inter-rater reliability of dichotomous ratings.
http://www.mhri.edu.au/biostats/DAG_Stat
World's largest portable amateur telescope, 41.2" Newtonian reflector with pictures of the telescope and during construction.
http://www.runway.net/pilots/dan/welcome.html
This is a data latch and indicator which also is a data switch and has a bidirectional input/output port which can be read or switched.
http://www.4qdtec.com/dsw.html
Director of the SMU Geophysical Imaging Lab. Member of the Dallas Personal Robotics Group. Site includes detailed descriptions and photos of his autonomous robots including nBot, a two-wheeled balancing robot.
http://www.geology.smu.edu/~dpa-www/dpa.html
Site includes descriptions and photos of a variety of robot-related projects including robot arms, walking machines, and flying vehicles.
http://www.geocities.com/davidvwilliamson/