which batteries are best, many NiMH batteries tested
http://www.imaging-resource.com/ACCS/BATTS/BATTS.HTM
Offers access to professional telescopes worldwide for observations made by school children and teachers.
http://www.schoolsobservatory.org.uk/
Here is a small robot that will run from sunlight. Just powered by a solar cell. Here are the circuit diagrams, assembly instructions, and the parts list.
http://www.xs4all.nl/~sbolt/e-fotovoor.html
A collection of people interested in the Microchip PIC processor.
http://www.piclist.com/techref/piclist/index.htm
The three foot ribbon cable loop assembled, propped up by a child's rocking chair - it is not self supporting. This is a very "hot" design - excellent "Q" and excellent sensitivity.
http://www.mindspring.com/~loop_antenna/ribbonloop.htm
A collection of articles and papers on aspects of signal processing relating to acoustics, noise and vibration. Includes practical stories, problem-solving techniques, tutorials, reference materials.
http://www.prosig.com/signal-processing/
Lists robotics related activities at EPFL in Switzerland.
http://diwww.epfl.ch/lami/robots/
some simple laser effects
http://www.west.net/~science/laser.htm
Construction article for builing this receiver accessory to filter out crud. Schematic diagram and parts list are included.
http://www.mines.uidaho.edu/~glowbugs/soj.htm
2.4 GHz antenna diagrams.
http://www.qsl.net/vk3jed/