2Mary Wilson | HTML Editor's LetterShape the Future |
10CJ Abate | HTML New Product News
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17David Tweed | HTML Test Your EQ - Answers for Issue 274 |
11 | Reader I/OLetters to the Editor |
22James Lyman | DIY Surface-Mount Circuit BoardsTips and Tricks for Building SMD PrototypesMaking the transition from building circuits with traditional components to using surface-mount devices (SMDs) may seem daunting. This article provides advice and workarounds to help get your SMD prototype up and running. |
28George Adamidis | Build a Signal Frequency CounterYou can build an LCD frequency counter for your workbench. This design is based on an 8-bit microcontroller, but its creative modifications enable you to use the device as a 28-bit counter.Download: 275-Adamidis.zip |
34Chris Coulston | "Smart" Electronic AccessoriesDesign an RGB LED PendantYou can use USB-to-USART bridge technology and RGB LED transceivers to connect small pendant-style devices. Each pendant's compact design includes 5-mm LEDs, a tiny IC, and a lithium polymer battery.Download: 275-Coulston.zip |
The Consummate Engineer42George Novacek | Testing and TestabilityPart 2: PCB TestingMost modern electronic devices contain a PCB holding their components. To ensure efficient final product assembly, the boards must be tested during their manufacturing process. This article details some common PCB testing methods. |
Questions & Answers46Mary Wilson | Engineering a Way to Clean Solar MirrorsAn Interview with Scott PotterDesigner and technology executive Scott Potter won first prize in the 2012 RL78 Green Energy Challenge, presented by Renesas Electronics in partnership with Circuit Cellar and Elektor magazines. The global contest called on participants to develop green energy designs utilizing Renesas's RL78 microcontrollers. Scott won with his solar-powered electrostatic cleaning robot, which removes dust and debris from the tracking mirrors of large-scale concentrating solar power plants. |
The Darker Side50Robert Lacoste | UML State MachinesYou can use Unified Modeling Language (UML), which is a standardized software specification language, to represent state machines. This article provides an understanding of state machines -- both basic and enhanced -- and how you can implement them in your software.Download: 275-Lacoste.zip |
Embedded in Thin Slices58Bob Japenga | Concurrency in Embedded SystemsPart 7: Software Signals ExplainedWhat are software signals and how can you use them to effectively communicate between a software system's concurrent operations? This article explains how and when to use signals. It also explores using signals vs. message queues or FIFOs and the difference between standard and real-time signals. |
From the Archives62Dhananjay Gadre Anurag Chugh Parag Shah Sneha Lele | Network of KeypadsThis integrated voting system includes several keypads that feature an ATmega8, a MAX485, a few LEDs, and push buttons. The keypads communicate over the RS-485 bus. A Java application runs on a PC that generates a bar graph similar to the one seen on TV game shows. |
From the Bench70Jeff Bachiochi | Real-Time Fuel Consumption MonitorData Collection and an On-Board DisplayYou can design a system that gathers real-time data about your vehicle's fuel economy. This design utilizes a microcontroller chip and features an on-board diagnostics display.Download: 275-Bachiochi.zip |
76 | Crossword Puzzle |
79 | Crossword Puzzle - Answers for Issue 274 |
80Brian Douglas | Tech the FutureThe Growing Importance of Control Theory for DIYers |
FTP Directory for INK 275 | |
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