COMSOL Multiphysics 5.0 with App Builder and COMSOL Server to Run Simulation Apps

ComsolAcousticSimulationModelWeb

COMSOL provides simulation software for product design and research to technical enterprises, research labs, and universities throughout the world. Its flagship product, COMSOL Multiphysics, is a software environment for modeling and simulating any physics-based system and for building applications. A … Continue reading

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WiLink 8 Range of Wi-Fi and Bluetooth Modules

WiLink8TexasInstruments

Texas Instruments has announced the WiLink 8 combo connectivity modules to support Wi-Fi in the 2.4- and 5-GHz bands. The new highly integrated module family offers high throughput and extended industrial temperature range with integrated Wi-Fi and Bluetooth. The modules complement … Continue reading

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New PMR Common Platform Processor

CML - 7241_7341Image

CML Microcircuits recently released a PMR common platform processor to support digital/analog FDMA PMR/LMR and two-slot TDMA digital systems. As engineers have moved two-way radio from analog to digital, a variety of digital FDMA and TDMA PMR/LMR systems have emerged along … Continue reading

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Quad Output Programmable Universal PMIC

Exar-EX039_xr77129

Exar Corp. recently announced the XR77129, a quad output programmable universal PMIC with an input operating voltage range of 6 to 40 V. Its patented control architecture is well suited for 40-V inputs using a 17-bit wide PID voltage mode VIN … Continue reading

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New EZ App Lynx Library for Creating Smart Bluetooth Sensors

EZ App Lynx Post_final

CCS C-Aware IDE now includes the EZ App Lynx library (#include <EZApp.c>). Quickly create a Bluetooth wireless sensor, or controller, that may be viewed or managed on a paired mobile device using the EZ App Lynx Android app. The free … Continue reading

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Microcontroller-Based Wireless Pedometer & Pace Tacker Project

ChuangModule2

Anyone can easily order a pedometer or GPS sports watch on the Internet. But engineers like challenges, right? With the right parts and a little knowhow, you can engineer your own microcontroller-based wireless Bluetooth pedometer and pace tracker. In the … Continue reading

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Microcontroller-Based Control Display Component

Photo 1: Fully functional CDC prototype

Jerry Brown, a California-based aerospace engineer, designed and built (both the hardware and software) an MCU-based computer display component (CDC) for a traffic-monitoring system. The system with the CDC is intended for monitoring and recording the accumulative count, direction of travel, speed, and … Continue reading

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5th International PECCS Conference

Peccs_2015_1

The fifth edition of the PECCS conference (5th International Conference on Pervasive and Embedded Computing and Communication Systems) organized by INSTICC (Institute for Systems and Technologies of Information, Control and Communication) will take place from the February 11-13, 2015 in … Continue reading

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Microcontroller-Based Air Quality Mapper

The webpage displaying CO2 measurements acquired in a session

Raul Alvarez Torrico’s Air Quality Mapper is a portable device designed to track levels of CO2 and CO gasses for constructing “Smog Maps” to determine the healthiest routes. Featuring a Renesas RDKRL78G13 development board, the Mapper receives location data from … Continue reading

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2014 Year-End Notes

Steve Ciarcia

In every December issue, we like to take a look at where we’ve been and where we’re going. Since this is the final issue of the year, let’s review a few important notes about 2014 and the 2015 editorial schedule. CIARCIA … Continue reading

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Electronica in Images

PB110766

Joao Martins, editor in chief of Circuit Cellar‘s sister publication, audioXpress, attended the 2014 Electronica show in Munich from November 11 to 14, 2014. Here we provide some of the photos he took from the floor. 

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Budgeting Power in Data Centers

Figure 1: The plot demonstrates billion of instructions per second (BIPS) versus server power consumption as measured on an Oracle enterprise server including two SPARC T3 processors.

In my May 2014 Circuit Cellar article, “Data Centers in the Smart Grid” (Issue 286), I discussed the growing data center energy challenge and a novel potential solution that modulates data center power consumption based on the requests from the … Continue reading

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Embedded Chip = Subdermal Chip?

Circuit technology  human palm.

Forget stashing your cash under your mattress. Now you can stash it under your skin. Sort of. The Telegraph reported Tuesday that Martijn Wismeijer, a Dutch innovator, recently implanted a 12-mm xNTi NFC chip in his body to store Bitcoin. The … Continue reading

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WIZnet Distinctive Excellence IoT Projects

WZ1327 - Iot Gateway

The Circuit Cellar team felt strongly that there were considerably more first-rate projects entered in WIZnet Connect the Magic 2014 Design Challenge than could be satisfied with the available prizes. Thus, it designated a special category called “Distinctive Excellence” for … Continue reading

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Twin-T Oscillator Configuration

The front panel of the oscillator/volume unit (VU) meter contains all the necessary controls. (Source: L. Cicchinelli)

Since retiring in 2013, electrical engineer Larry Cicchinelli has provided technical support at an educational radio station. For audio circuit debugging and testing, he uses a DIY battery-powered oscillator/volume unit (VU) meter. Details follow. Originally, I was only going to build … Continue reading

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