A simple project to get to know the 18F242. A flashing LED with the frequency controlled by a variable resistor. Turn left to increase the flashing frequence, turn right to reduce.
http://members.home.nl/b.vandam/lonely/pagina18.html
A homebrew take on Ambient's digital Orb that changes color according to the weather or stock markets.
http://devices.natetrue.com/wlcolor/wlcolor.html
How tp assemble a bike light, with 10W halogen, and 3.5Ah 7.2V lithium ion battery pack.
http://www.ladyada.net/make/bikelite/index.html
http://www.cyberreefguru.com/diy/mh_new/mh_new.html
http://www.cyberreefguru.com/diy/mh/mh.html
Like the real thing.
http://www.uoguelph.ca/~antoon/gadgets/wing.htm
http://www.web-ee.com/Electronic-Projects/projects/xmas/index.shtml
For Helicopter or Aircraft.
http://www.uoguelph.ca/~antoon/gadgets/tail.htm