LloydGod has created a bot that senses light and walks away from the shadows. “This is a little project from last winter. I hope to make some better shaped legs one of these days for improved walking. When the light on the 2 photo diodes is balanced the rear legs movement is equal on each side. When 1 photo diode is brighter than the other the rear legs will
Scientists have constructed a “micro microwave,” a long, narrow device measuring 4 mm long by 7 micrometers wide (the width of a red blood cell). Considered to be the smallest microwave ever, the technology will likely be used for medical “lab-on-a-chip” devices. Micro microwave:: The gold traces on the glass circle are microwave transmission lines. The 1.25 cm wide polymer block over the transmission line in the center houses a
The Wii Remote has an infrared camera in the front that is normally watching for the infrared LEDs that are mounted in the sensor bar. This camera is actually quite sensitive and can be used for some cool things! Jcl5m has come up with a method that uses reflected IR light from small reflectors to provide the Minority Report style interaction. Via: Hack a Wii
Carlos demonstrates how to build a simple IR detector. Looks like it could be done for a dollar or two. “An IR signal is “seen” by a reverse biased IR diode which produced an electrical signal according to the light intensity. This signal is then amplified trough a transistor and used to power an ordinary LED. This means that the LED will light up when the IR diodes receives some
Here is a creative way to carve your pumpkin next year! Have a look at this Instructable for more details. “Pumpkin carving with the Tesla CD Turbine, Steampunk Edition. New design of the little turbine made from CD’s gets put to the test. Will the barely held on, magnetically-coupled, spinning Skilsaw blade, cut through the tough and messy flesh of the poor, tearful Pumpkin??” Thanks Rick
Congratulation to the last contest winner. I have got lots of good feedback for this flashlight, hope the winner enjoys it. 🙂 This contest will run for this weekend only (November 10- 11, 2007) . Ending time is based on central standard time. To enter, identify the item pictured above and give an example of what can be done with it. Please do not give the answer in the comments.
This LEGO NXT robot is sure to be a hit at your next outdoor fireworks show. Just line it up and let it go. “This autonomous NXT robot will light multiple fireworks in a sequence – while the family sits back and watch the display!! It uses a MINDSTORMS NXT, two light sensors (one for navigation and other to detect a lighted fuse) and an Ultrasonic detector (to adjust
