Beer Brewing for Beginners Article Hacked Gadgets - DIY Tech Blog » Blog Archive » Understanding St “A stepper motor is a brushless, synchronous electric motor that can divide a full rotation into a large number of steps. When commutated electronically, the motor’s position can be controlled precisely, without any feedback mechanism” (citation from Wikipedia) Any DIY Maker should understand the workings of stepper motors, Ask any Robot maker, just about any motion control a robot makes is done with stepper motors. Here are a few links that will educate you on what stepper motors are, how to understand their operation and how to control them. PMinMO.com has a wiki that provides a good basic introduction to stepper motors, related control mechanisms, and software associated with them. PMinMO.com A slightly more technical description on the stepper motor itself can be found on the Gecko Drive site Gecko Drive PDF document
Hacked Gadgets - DIY Tech Blog » Blog Archive » Articulated Hand Looking for a cool science fair project? Forget the exploding volcano, check out this Articulated Hand project! “My niece Sydney needed help for a 7th grade Science Fair project. Materials: You can get everything you need at Lowe’s or Home Depot. 1 – 3/4″ hardwood dowel 1- 4″ x 1″ Pine plank (I’m calling it ’1×4′ here) 5 – bags of #216-1/2 small screw eyes (eyelets) 1 – roll of braided nylon string (one color for ligaments. Tools: Various hand tools (you already have them if you are a maker! We used a small drill press, 4″ side grinder, jig saw (my Dad taught me this was called a “Saber saw”) and a chop saw with a trim blade. Thanks Robert.
MAKE: Blog: Toolbox: Ten tools you won't want to live witho In the Make: Online Toolbox, we try to focus on tools that fly under the radar of more conventional tool coverage: in-depth tool-making projects, strange or specialty tools unique to a trade or craft that can be useful elsewhere, tools and techniques you may not know about, but once you do, and incorporate them into your workflow, you’ll wonder how you ever lived without them. And, in the spirit of the times, we pay close attention to tools that you can get on the cheap, make yourself, refurbish, etc. For this week’s column, I put the call out to the Maker Media staff, maker friends, and my cohort at Dorkbot DC and HacDC. I wanted to know what tools makers couldn’t live without, tools they might have gone years before discovering, but once the tool was in the box, they couldn’t bear the thought of not having it around. I got a very respectable response, with many passionate declarations for a lot of beloved tools. Thanks to everyone who sent me suggestions. Leatherman Tool Hemostats R.
Tau Ceti's planets nearest around single, Sun-like star 19 December 2012Last updated at 00:32 ET By Jason Palmer Science and technology reporter, BBC News An artist's impression shows the five-planet system; from there, our Sun appears in the constellation Bootes Our nearest single Sun-like star hosts five planets - one of which is in the "habitable zone" where liquid water can exist, astronomers say. Tau Ceti's planetary quintet - reported in an online paper that will appear in Astronomy and Astrophysics - was found in existing planet-hunting data. The study's refined methods of sifting through data should help find even more far-flung worlds. The star now joins Alpha Centauri B as a nearby star known to host planets. Tau Ceti lies 12 light-years distant; Alpha Centauri B, just four. In the gravitational dance of a planet around a star, the planet does most of the moving. "It's a star on which we have a lot of data - an order of magnitude more data than we have for pretty much any other star," Prof Jones told BBC News.
Magnesium Rich Foods – List Of Food Sources Of Magnesium Magnesium is one of the minerals essential for good health. The fourth most abundant mineral found in the body, it serves a number of important metabolic functions. Majority of magnesium present in the body is found in bones, teeth, and red blood cells. List Of Food Sources Of Magnesium Artichoke Barley Beet greens Black beans Brazil nuts Broadbeans Broccoli Brown rice Buckwheat flour Bulgur Cowpeas Halibut Kidney beans Lima beans Milk Navy beans Oat bran Okra Oysters Peanuts Plantain Pumpkin seeds Rockfish Scallop Soy milk Soybeans Spinach Squash seeds Sweet potato Tofu White beans Whole grain cereal Whole wheat bread Whole-grain cornmeal Yogurt Health Benefits of Magnesium Treats Asthma Having magnesium-rich foods in the diet provides great relief for asthmatic patients, as it helps one to normalize the pattern of breathing. Helps Maintain Bone Health Having food with good amount or even traces of magnesium, on a daily basis, helps maintain bone health. Treats Back Pain Heart Attack