4CJ Abate | HTML Task ManagerEmbedded Systems Abound |
10CJ Abate | HTML New Product News
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14 | Member Profile: Mark Csele |
15David Tweed | HTML Test Your EQ - Answers for Issue 264 |
16Mark Pedley | eCompassBuild and Calibrate a Tilt-Compensating Electronic CompassA modern smartphone contains a built-in electronic compass (eCompass). How does the tilt compensation work, and how is the eCompass calibrated for the magnetic interference from the circuit board? This article describes how you can use the high-performance consumer accelerometers and magnetometers developed for the smartphone market to add a tilt-compensated eCompass to your own microcontroller project for less than $5. |
Questions & Answers24Nan Price | The Man Behind the dsNavCon DesignAn Interview with Guido OttavianiGuido Ottaviani worked as an analog and digital developer for several years for an Italian communications company. Today, he is a technical manager for a large Italian editorial group. In his spare time, Guido designs autonomous robots, shares his experiences with other self-professed "electronics addicts," and evangelizes robot design. In June, Guido and I discussed his fascination with robotics, his favorite microcontrollers, and some of his innovative projects, such as the dsNavCon system. |
32Scott Weber | MCU-Based Light ControlLonger Serial Communication on Differential WiresYou don't have to purchase expensive off-the-shelf home control equipment. For instance, you can use a microcontroller and a few other components to build a custom system to control lights on a predetermined schedule. This design is intended to replace a wall switch.Download: 265-Weber.zip |
40Shlomo Engelberg | Examining an I/O PortThe Internal Structure of an I/O Pin with a Pull-Up ResistorUnderstanding the internal workings of your microcontroller is essential. This article details how a simple experiment enables you to clearly "see" the structure of pins with internal pull-up resistors. The experiment also enables you to see the effect of each of the PMOS transistors that comprise the pull-up resistor. |
Embedded in Thin Slices44Bob Japenga | Concurrency in Embedded SystemsPart 2: Atomicity and TOCTTOUThe first part of this article series introduced the topic of concurrency in embedded systems. This article discusses two common problems associated with embedded system designs containing concurrency: using nonatomic operation in concurrent threads and time of check to time of use (TOCTTOU). |
The Consummate Engineer48George Novacek | Project DevelopmentPart 2: Development Process, Milestones, and Design ReviewsA competent electronics engineer must conceptualize and then follow a proper project development plan. To do so, the engineer must understand the essential topics of development milestones, design reviews, and configuration control. |
Above the Ground Plane52Ed Nisley | MOSFET Channel ResistanceTester HardwareMeasuring MOSFET characteristics helps verify that the datasheet values will apply in an actual circuit. This Arduino-based tester applies known currents and voltages, and it sends the results to a PC for data logging and analysis. This article details the hardware design and verifies the overall calibration.Download: 265-Nisley.zip |
The Darker Side58Robert Lacoste | System-Level RF DesignDesigning a radio frequency system -- even using precharacterized modules or components -- can be a daunting task without the proper methodology and tools. This article illustrates how system-level simulation tools can ease the process.Download: 265-Lacoste.zip |
From the Bench68Jeff Bachiochi | Charging with PV CellsEnergy harvesting is becoming more and more ubiquitous, but batteries -- including rechargeable batteries -- still play an important role in our day-to-day lives. This article discusses using photovoltaic (PV) cells, which are electrical devices that convert light's energy into electricity, as a means of keeping batteries charged. |
76 | Crossword Puzzle |
79 | Crossword Puzzle - Answers for Issue 264 |
80Steve Ciarcia | HTML Priority InterruptWhat Were They Thinking? |
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