Electronics
Basics
How-To: Build BEAM Vibrobots
http://www.streettech.com/modules.php?op=modload&name=News&file=article&sid=1618&mode=flat&order=0&thold=1
Lecture 1 - Background and Power Supply
http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=57&page=7
FM Transmitter
http://africatravels.pbwiki.com/RadioTransmitterCircuits
Useful bits
1381 voltage detector
http://members.aon.at/sunbeam/1381.htm
http://www.solarbotics.com/products/1381/
pn2222 transistor
insert url
(how is this useful?, see at http://cachefly.oreilly.com/make/television/08/MiniRobots.pdf )
http://www.solarbotics.com/products/tr2222/
DS2405 Addressable 1-wire Switch
http://rjconway.homeip.net/wordpress/wp-content/uploads/2008/05/ds2405.pdf
for controlling larger power:
Power Solid State Relay
http://rjconway.homeip.net/wordpress/wp-content/uploads/2008/05/ssr-sc842110.pdf
battery meter:
http://profmason.com/?p=689
Addressable Dual Digital Potentiometer - DS1803
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2779/ln/en
Using an Analog Voltage to Control a Digital Potentiometer
http://pdfserv.maxim-ic.com/en/an/AN4051.pdf
See Also
On Collecting Solar Power and Storing the Power in a battery efficiently
