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After a few nights of work, I had a hovercraft I was proud of. Beautifully crafted from plywood, a 2×4, and Visqueen, I was certain it would provide hours of hovering enjoyment.
Hah.
My test versions worked perfectly. I figured that the physics would scale up, and all would be great. Turns out, propellers don’t scale up. […]

I recently whipped up some drawings for a easy-to-build two person hovercraft. I’m now in the buildling stage, and it’s nearing completion! I should be able to ferry 350 pounds around, using a 24″ propeller and a tractor starter motor for thrust.

I installed a ball valve to make it easier to spray in the AquaNet. My friend Mike either did a crazy fluid computation in his head or accidentally came up with an amazing method for spraying and loading the potato cannon. With the new method, we hit 386 feet!

The potato launcher video is up! Look under “Projects”.

Today I spent some time fixing and editing several articles that had been haphazardly strewn about for the past few months. Also, I finally got around to writing up a few projects the had not been present. Be sure to check out the new links under “Projects”, as well as some of the old ones […]

I finally broke. I had somewhere near 18 computers, and in general they worked, but since they were old I was always swapping dead disks and power supplies. Plus, managing that many computers when I only have a few hours a day got to taking so much time that I could only manage the cluster, […]

I’ve got the code to a point of semi-completion. I’ll write it up soon, but in the mean time take a look at a (somewhat scary) funny video that came out after a messed-up run: Blowup.wmv

I’ve been working on coverting a Razor scooter to an electric model. I got a tractor starter motor to use, and two lead acid 12v 5Ah batteries. A friend and I went out and got pulleys and belt, then drilled and screwed about. A few hours later, we came out with a highly “ghetto” […]

After recently finding the program Fyre, I decided I had to delve into the depths of chaotic images. I read the README, and scripted up a quick hack to see if I was right. And I sort of was! The new program will run on the cluster as well, as this is a very easy […]

I finally got it all built! Videos and all are Here, or click “Plane” under projects on the right side.

I found this great site that gives you CAD software, AND makes the piece for you. Check out http://emachineshop.com. I was able to make the thing below in one evening. There is a catch though… The thing below would be about $100 to have made. However, the more you order, the less the price is.

I put up images and descriptions, check it out HERE.

It actually (sorta) works!
I decided after seeing nBot that I wanted to build a balancing robot! I didn’t have any of that fancy gyro/accelerometer stuff, so I figured out how to use to IR sensors to sens distance from the ground, and thus deduce angle. Turns out someone did something like mine (here), however […]

Update: I just uploaded a new version that lets you tweak values… download it again!
After a rather long wait, I finally got the 3d box working. While it was just for me to learnt the basics, it’s still useful for teaching purposes. Also, rather than a “spinning” box, as I attempted to make, I got […]

This message was sent to me by Mike, the other trebuchet man (who built the latest version, since I was unavailable :() :
After the failure of the counter-weight last week, the connection b/w the throwing arm and the ‘rock box’ has been re-enforced to withstand the stresses of 400 pounds of rocks. This required […]