We have featured DIY Induction Heaters here before. There is something about heating a big chunk of metal with no contact that is so appealing. Uzzors2k has a great write-up about his experiments with his Induction Heater, it is filled with trial and error which we can all learn from. "To test my new driver I had a large work coil and tank capacitor already built for a previous
Using a hall effect device a magnet is allowed to hover in mid air. A microcontroller monitors the hall effect feedback to determine how close the magnet is and adjusts the strength of the electromagnet to attract the magnet or allow it to drop. This calculation and adjustment is performed so quickly that the magnet appears to remain at a constant height. Project Page Thanks for the tip Chris.
Greg Pyes has done a great job of hiding a huge Subwoofer in a Floor Cavity. He took pictures along the way so that you too can have your thumping bass and no big speakers in sight.
David from Volunteer Lab Rats is playing with his new ADXL202 Accelerometer. He documented the results so that we can be a few steps closer to getting it to work when we rig one up. "The board is supplied with +5v and ground. There are two output pins on the board. They each output the square shaped signal seen on the picture below. The duty cycle of the signal
MechRC is a cool new robot that is very technical but unlike other applications of technology where the product becomes more complex this device is simplified by it. Unlike most programming where you need to enter complex commands to be executed with this robot you simply show it what you would like! Our friends over at Trossen Robotics are the first in the United States to offer the robot,
Cisco is running a cool contest with some wicked prizes. The top prizes are two $10,000 giveaways! All you need to do is record a 3 minute video about either your digital heaven or hell. You have until November 26th to enter so you will have to act fast. Here are two of my favorite videos: Ken’s Retro Crib Fully Automated and Wired House! "Submit a video (up to
Steve from Finkbuilt has put together a cool DIY FOG Screen, unlike the commercial models that cost tens of thousands he built his on a DIY hobbyist budget. The video shows a perfect application which is a scary Halloween evil eye. "The effect uses rear-projection video, shined onto a screen of water vapor created by ultrasonic atomization, that is sandwiched between 2 laminar airflows, which keep the sheet of
