June 2006

Lego Crossbow

Is there anything that can’t be made out of LEGO? After seeing this I am thinking the answer is NO. “One day I was making a simple little elastic gun to shoot Lego blocks and I thought to myself, ‘it would be cooler if it had some kind of trigger.’ The next thing I knew, I was involved in a competition with my own self” Via: TechEBlog

Wireless computer shrunk to smaller than a credit card

If space is at a premium and your budget is small, this computer is tiny and cheap! “The CM-X270 is a small Computer-on-Module board designed to serve as a building block in embedded applications. The CM-X270W has all the components required to run operating systems such as Linux and Windows CE. Ready packages for these operating systems are available from CompuLab. The small size and low power consumption of the

Nixie Propeller Clock

You have seen propeller clocks before, but what about a Nixie Propeller Clock? I didn’t think so! Check out the link for code and a schematic. “I stuffed the board with the PIC, the crystal oscillator, two logic chips, 10 HV transistors, the nixie, the HV inverter from a disposable camera flash circuit, the 7805 5V regulator, a 0.6 Farad memory cap, diodes, and the pushbuttons for setting the time.

Aerial Video Cam

Got a RC chopper, why not take a camera into the sky for some aerial pictures? “Here’s a 3.4 I picked today. I sliced off the battery compartment and installed a servo plug so the camera can be powered by my plane/helicopters receiver. Works great. The 3 wires you see are from a servo extender, I’m not using the yellow (signal) wire…just the black and orange power ones. While it’d

Availabot

It would be fun to program this to fall over when it is time for a coffee break. “Availabot is a physical representation of presence in Instant Messenger applications. Availabot plugs into your computer by USB, stands to attention when your chat buddy comes online, and falls down when they go away. It’s a presence-aware, peripheral-vision USB toy… and because the puppets are made in small numbers on a rapid-prototyping

Line following Roomba

  If you have a Roomba, why not buy a broom and put the Roomba to better use. “The other day I was marveling at the efficient operation of my roomba when it occurred to me that it would be really nice if roomba would get me a beer. While gestating the idea my first thought was to have roomba follow a line to the fridge and back. And a

Door Chime Privacy Sentry

If you need to set a quite door bell period this is a cool (high tech) solution. Code and a detailed circuit explanation can be found at Richard Cappels site. “To set the timer, you just push the button momentarily, and when its released, the amber LED will come on and the doorbell circuit is disabled (the door bell button doesn’t work) for a 10 hour period. At the end