Counting winding turns is made easy with this project that uses a hall effect device. “Magnets on a spinning thing near a hall effect latching switch chip make pulses that a counter counts to count the turns the spinning thing spun. Operation: A latching hall effect switch turns ON when it sees one pole of a magnet. Pull the magnet away and it stays ON. When it sees the other
Volunteer Lab Rat has an interesting project allowing you to build a 3D Scanner out of some common parts. “The following blueprint shows an exploded view of the vital components of the rotating table. I use an R/C servo to rotate the table. It would be easier to construct a table using a steppermotor, but I had an R/C servo on the shelf. The servo cannot rotate a full 360
Old hard drives can be fun, here is another reason not to simply chuck them in the garbage! “Fun with an old hard drive. Took the platters out of many hard drives and put them into one drive. Spin it up to speed and give it a nudge, then watch the fun.”
It is refreshing to see large companies such as Olympus thinking outside the box and making a product that no one else has thought about! “Olympus has announced a prototype of three dimensional camera made from Japanese evergreen wood at Photokina 2006.The camera is made by three dimensional compression of the wood using latest technology. Japanese cypress wood was compressed for the model. The hardness of the compressed wood exceeds
Julian put together a plan for a RFID zapper, the information below was translated but reads not bad. Project Page. UPDATE: Julian was kind enough to send in a hand translated version. The text below has been changed accordingly. (Thanks Julian) “This drawing represents schematically the circuit board of a disposable camera with built-in flash. Also, the necessary design changes are illustrated. Essentially, the “on-switch†(On-Schalter) must remain closed permanently,
The Hackers Bench has put together an interesting way to hack a cheap remote door bell into a remote control relay. “I was looking for a cheap remote control that would turn on my driveway floodlights from the car. Yea, an IR motion detector would work, and I even tried that for a while. The problem is that we have coyotes, javalina, and other nocturnal creatures that wander around here
This looks like one of the best effects I have seen for not much effort. Have a look at the Big Scream TV site for even more ideas. “We’ll show you how to make a ghostly head float in the air. This is an excerpt from our X-Treme Haunted House Make-Over DVD. This is a first-ever, revolutionary theme-park quality effect for your Halloween Home! … ”
