By Mark Frauenfelder
Arthur C. Clarke famously wrote in 1961, "Any sufficiently complicated expertise is indistinguishable from magic." within the subsequent factor of MAKE (Vol. 23) we will convey you the expertise enough to make issues that appear like magic. during this specified instruments factor, dedicated to machines that do pleasant and mind-blowing issues, we are going to make it easier to make the next: a magic suitcase that includes an lively soothsayer, an electromagnetic equipment that shoots aluminum jewelry, a shrewdpermanent wood apparatus mechanism invented via Renaissance gadgetmaster Leonardo Da Vinci, a miniature digital Whack-a-Mole arcade online game, a tiny yet strong audio amplifier, and a creepy mechanical field that is purely goal is to show itself off. All this and masses, even more in MAKE Vol. 23. MAKE is still a pace-setter within the tech DIY flow because of its uncanny intuition to interact the interest, power, and keenness of the turning out to be neighborhood of Makers -- DIY lovers, hobbyist engineers/designers, and others who prefer to tweak, disassemble, recreate, and invent cool new makes use of for know-how in notable tasks they adopt of their backyards, basements, and garages.
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In this competition, teams compete to shoot white targets off shelves. It’s like a shooting gallery for airsoft guns, but instead of people shooting the guns, it’s robots. indd 49 6/21/10 2:57:07 PM A B C D Making the Photonic Fence I had the honor of teaming up with a few ridiculously smart people, such as Jeremy Bruestle, Phil 50 Fig. A: ILLUMINATE: LEDs (red) light a backdrop. Fig. B: SCAN AND TRACK: The camera sees bugs, software tracks them, and a laser spotlights them. Fig. C: IDENTIFY: Software compares wing-beat frequencies to pick out the female mosquitoes.
Dozens of out-of-use mines pockmark the mountains in Mineral County. Copper ores often look metallic, or show vibrant greens and blues. Iron ore can look like chunks of rust. If I had relied only on internet information to find these locations, I would have ended up on the tops of mountains for no reason. I found precise coordinates that were precisely a mile off. Some mines had no record at all, merely piles of leftover rocks at the collapsed entrances. Once again I needed local advice, as well as paper maps, to find them.
What follows is a description of how we did it. Where Is It? How do you (or a computer vision system) spot a 2mm black insect from distances up to 100 feet away, in the dark? Under such conditions, direct illumination is out of the question. A better solution is to project light on a retroreflector and look for Illustrations courtesy Intellectual Ventures facial recognition software adapted to identify small white targets instead of faces, and implemented a MAKE Controller to control servos for making the gun pan and tilt.