Nuts and Volts ~ Vol.30, Issue 9, September 2009
Date: 28 April 2011, 04:47
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Projects & Features Columns SEPTEMBER 2009 www.nutsvolts.com 12 TechKnowledgey 2009 Events, Advances, and News Topics covered include the world’s smallest reed switch, lasers that create new forms of metal, a new all-in-one PC, plus other stuff you’ll find fascinating. 16 Smiley’s Workshop An AVR C Programming Series Some ALP sensors. 24 Getting Started With PICs The Latest in Programming Microcontrollers Programming the PICDEM 2 Plus Development Board. 30 Q & A Reader Questions Answered Here Solar panel voltage regulator, op-amps and diodes, current sensing motor control, plus more. 62 Near Space Approaching the Final Frontier An environmental test chamber for near space. 68 The Spin Zone Adventures in Propeller Programming LCDs & Things ... oh my! 76 The Design Cycle Advanced Techniques for Design Engineers USB-to-Ethernet using Microchip’s free stacks — Part 2. 82 Personal Robotics Understanding, Designing & Constructing Robots The Dungeon Keeper. Page 39 Page 62 Departments 08 DEVELOPING PERSPECTIVES 10 READER FEEDBACK 34 NEW PRODUCTS 35 SHOWCASE 67 ELECTRO-NET 88 NV WEBSTORE 92 CLASSIFIEDS 94 TECH FORUM 97 AD INDEX 36 Magnetic Pendulum This fun device will get you into the swing with the principle of magnetism at work. ¦By Tony Gasparovic 39 Bicycle Gear Position Indicator With this unit, you can keep your eyes on the road instead of your gear chains. ¦By Dan Gravatt 42 The ReFUSEable Box You won’t want to refuse using this programmable relay for troubleshooting. ¦By Ron Newton 47 Properly Selecting Electronic Components This time, investigate basic solid-state theory, diodes, rectifiers, transistor amplifiers, and characterize them. ¦ By Vaughn D. Martin 56 Experiments with Alternative Energy Learn the fundamentals of renewable energy through this educational series. This month: External Conditions that Affect Solar Panels. ¦By John Gavlik
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