Elektor Electronics Hobby Project Magazine April 2013 Vol 4 No 52 BRAND NEW

Description: Elektor Electronics Magazine April 2013, Vol 4, No. 52 The Complete Source for Electronics: Projects, Technology & Embedded Condition: NEW / FACTORY SEALED Published Retail Price: $9.00 Inside the Cover: COMMUNITY 8 - Elektor World Good marks & certified too Now eat this Starting out with Elektor Inside the minds of our engineers PROJECTS 10 - Pattern Lock This access control system requires a personal pattern or signature to be 'drawn' on a surface instead of banging numbers into a keypad. The article also has a solid background on capacitive touch circuitry. 22 - 500 ppm LCR Meter (2) This top notch project deserves a matching presentation. In this second installment of the article we continue with descriptions of the keypad extension for standalone use, the instrument's functions, and control software. 32 - Elektor Linux Board Extension This extension board was developed to further propel our Embedded Linux series of articles and the matching GNUblin board. It has a display, buttons, a real time clock and 16 GPIOs. Linux devotees, switch on your solder irons. 38 - Arduino on Course (5) Using a webcam and a few parts found in the junkbox we build a one-eyed guard to watch over our cookie jar. The circuit and Arduino software faithfully evidence any attempt to steal cookies by taking a snapshot of the culprit. 44 - Universal Driver for Power LEDs Power LEDs are now affordable, and this project uses a specialist IC Type TS19377 to simplify the design of a compact and efficient power LED driver. 48 - Thermo Book Designed to fit into the back of a book cover, this circuit indicates temperature and relative humidity at fixed intervals. The temp/RH readout can also be toggled manually (literally) by clapping your hands. The sensor used is a Sensirion SHT15. 52 - DIP Accelerometer Module This top notch project deserves a matching presentation. In this second installment of the article we continue with descriptions of the keypad extension for standalone use, the instrument's functions, and control software Accelerometer ICs typically come in packages not suitable to home soldering. Here we solve the problem by presenting a carrier board for the popular MMA7455. 54 - Gadgeteer Introducing Microsoft Gadgeteer, a rapid protoyping system comprising a mainboard, extension modules, and software to match. 60 - Handlebar Heating Not satisfied with the crude systems on the market the author set out to design a sophisticated handlebar heater circuit with intelligent control. The result is suitable for motorbikes and scooters. INDUSTRY 66 - News & New Products New electronics products, components and technologies. LABS 62 - Frontline Breaking News What's brewing, growing and being researched at Elektor Labs 64 - XTAL Killer Leave room for the humble quartz crystal on your board 64 - What's cooking? Encouraging news for all builders of the 500 ppm LCR Meter project. 65 - LDO replacement THT The pitfalls of designing a through-hole 'equivalent' of a low-drop regulator board originally cast in SMD TECH THE FUTURE 72 - Virtual Memory Developments in implementing bi-directional payment systems, allowing virtual and traditional currencies to flow freely back and forth. Series Editor: Tessel Renzenbrink. MAGAZINE 76 - Retronics: The Curse of the Collector Ah, the thrill of recognition. This month Reginald Neale showcases a fairly random selection of items from his electronics vintage collection. Series Editor: Jan Buiting 78 - Hexadoku Elektor's monthly puzzle with an electronics touch. 79 - Gerard's Columns: Mind Altering A column or two from our columnist Gerard Fonte 82 - Next Month in Elektor A sneak preview of articles on the Elektor publication schedule. Track Page Views WithAuctiva's FREE Counter

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