The prize this week is 20 of our popular LED mounting boards. These LED mounting adapter boards let you solder to a small circuit board instead of soldering directly to LED and resistor leads. This contest will run for one week (Dec 6 – Dec 11, 2008) . Ending time is based on central standard time. To enter, identify the item pictured above and give an example of what can
Robin Massink from the Netherlands has built a cool Magnetic Levitation Light Bulb it uses Wireless Energy Transfer to power the bulb. It is always weird to see something being powered with no wires! "I used this globe (http://www.thinkgeek.com/geektoys/science/98b8/) for the levitating part. It consists of 2 permanent magnets, and 2 electromagnets, coupled with a hall sensor to keep a third magnet (inside the globe) floating. I mounted a
I love the look of the old rotary phones. This hack turns your old phone into a cool iPhone docking station. With 16 Watts of speakers hidden in the device there is sure to be some cool sounds coming from this covert device. "Rotary Dial 1940’s Phone fitted with an iPhone speaker dock. One speaker behind the dial (10w) on the front of the phone and two speakers in
I have seen a few articles about using these Fisher & Paykel Smart Drive washing machine motors as a starting point to make a wind generator. Once modified it looks to be a great inexpensive means to make electricity. Randy’s Workshop has some good documentation on how to modify these motors to be used as a generator. "This Fisher & Paykel Smart Drive Permanent Magnet motor is comprised of
The guys over at Flightography have a great rig for dropping water bombs! What makes it even better is their high quality camera that catches all the action. I can think of lots of fun and sneaky applications for this plane. 🙂
Chris Harrison has done some research on using scratching as an input device. In this video he demonstrates how simply scratching a wall or a desk could have some simple and inexpensive applications. Could you imagine controlling your room lights by scratching anywhere on the wall in the room you want to control? Or a coffee table that has a sensor so that you could use it to control
If you are an audiophile this Moving Magnet Phono Preamplifier Build may be of interest to you, the schematic is provided so that you can simply build your own if you desire. The circuit board looks like it has great separation to keep the audio quality high. "While looking through the local (Jaycar) electronics store catalogue I came across a Magnetic Cartridge Preamp Kit (Cat. No. KC5433). It uses
