Here are plans to build a very basic robot using a 3 1/2" floppy drive, along with some low cost parts. If you want to build a more powerful robot that can turn, you might want to advance to the Floppy II Robot which uses two 5 1/4" drives.
Trying to get a couple projects together for Fourth of July. Yesterday we had the Make Your Own Fireworks Show, today we'll be highlighting America's dessert, the apple pie. Now here's a really cool article that shows you how to make an apple pie, without apples. Using a chemical process to simulate the taste of apples instead. Sounds kinda gross, but probably not too far off of all this processed, packaged stuff most of us eat all the time anyway.
Pyrouniverse.com is another one of those sites, which to me, seems downright dangerous, but a lot of fun
There is a lot of information here regarding how to buy fireworks, safety, etc (basically info you can find on many other sites), but what makes this site unique are the instructions regarding setting up your own firework show. There are two sets of instructions, the basic firework show (which is not completely finished yet), and the very cool advanced firework show, that uses an electric ignition to ignite all the fireworks.
From their site: "Zelda Classic is a tribute to (what we think is) the greatest video game of all time: Nintendo's The Legend of Zelda. It has been developed into an exact replica of the NES version that we all know and love. Beyond that, Zelda Classic allows the development of new quests that can use either the traditional graphics or enhanced graphics, as well as new enemies, items, and challenges."
The CAVE is an immersive, projection based, virtual reality system. When you see videos of the CAVE in action, you'll want one for yourself. This site has detailed instructions showing you how to build your own.
Here's a site that shows you how to make a beer cooler (holds a pint) using a peltier CPU cooler, some nifty hardware hacks for the power, and power over CAT5 so he can carry his cold beer out in the backyard. The CAT5 cable probably would get in the way in the backyard, but he does have battery backup for ultra portability (considering how power hungry peltier coolers are though, I'm sure the batteries won't last very long).
If you've been wondering what to do with that old Palm III that's been lying around collecting dust for the last few years, the Palm Pilot Robotic Kit site might be your answer. Very well done site with great pics and easy to follow instructions on converting your Palm III into a robot.
This site shows you how to convert a normal RC car into a bluetooth controlled RC car. Instructions aren't very detailed, but if you have some electronics knowledge you shouldn't have much problem. He even includes source code to control the car.
When people want to experience virtual reality using today's technology, one of the first items on most people's list is a head mounted display (HMD). Unfortunately even cheap HMDs run a few hundred dollars, unless of course, you build your own. Definitely don't look as cool as bought HMD's, but much cheaper, and way geekier.