What's better than RFID tags? Your own fingerprints, of course. No batteries needed, no electronic eavesdropping devices, and no storage problems. They're always convenient and, well, they're always at your fingertips. The only problem with using fingerprint biometric controls is finding a suitable fingerprint reader. And, no, we're not talking about that archaic monstrosity used at the local cop shop, either. We're talking about an small, inexpensive fingerprint reader that just needs a swipe of your precious digit for unleashing a torrent of programming power.
So you’re ready to settle down on the couch in front of a good movie. Wait, there’s still work to be done: Turn off the lights, make popcorn, maybe even mix some drinks in the blender. No, don’t get up—just use a home-built receiver box that lets you turn any household appliance on and off with your TV remote. For example, plug a lamp into an outlet on the box (we’ve dubbed it the Zapper), program one of the remote’s little-used buttons to control it, and the next time you want to watch Halloween VI, you’ll barely have to lift a finger to set the mood.
Want to add some extreme zip into your next model airplane project? Try converting a glider into a rocket-powered NASA research aircraft. In this case, the glider is an Aero-Graphics Messerschmitt Me-163B "Komet" kit. Originally designed for the hard-to-find Jetex-50 rocket propulsion system, our "Pocket Rocket Komet" is powered by a single A3-4T Estes model rocket engine.
As we mentioned in our earlier post on the Esquire E-Ink cover, we have uncovered some additional details regarding the operation of this interesting E-Ink evaluation board set. There are two eight-stage shift-and-store bus registers (HEF4094BT) that drive each of the two E-Ink panels. The PIC12F629 controls the state of the HEF4094BT outputs: positive voltage, negative voltage, high impedance off, and shift register stage.
Al Gore and company have helped us to see that our planet is in peril. Lend a hand, make a toast, and help illuminate ways for saving Earth -- all at the same time! It's easy to do your part: recycle, refill, and recharge.
Not since the November 3, 1948 Chicago Tribune erroneously blared “Dewey Defeats Truman” has a publication’s cover caused such a visceral stir among its readership. Attempting to make a solid technological statement, the October 2008 cover of Esquire magazine featured two embedded 2 ¼- x 5-inch E-Ink panels.
Olimex Ltd., a Bulgarian electronic design and PCB fabrication company, has just raised the bar on powerful microcontroller development platforms, to the joy of DIYers around the world. Two new PCBs, cryptically named LPC-2478STK and PIC-LCD3310, are ready to rock your next embedded project.
If you've ever bent the pin on a microcontroller while trying to insert it into a DIP programming socket, you're not alone. Aligning those crazy pins again and again, while intermittently prying them out of the programming socket and then inserting your freshly burned chip into a target circuit, can lead to a long and sleepless night. Luckily, there is a cure for the bent pin nightmare. And this prescription costs less than $35.