Member Profile: Walter O. Krawec

Walter O. Krawec

Walter O. Krawec

LOCATION:
Upstate New York

OCCUPATION:
Research Assistant and PhD Student, Stevens Institute of Technology

MEMBER STATUS:
Walter has been reading Circuit Cellar since he got his first issue in 1999. Free copies were available at the Trinity College Fire Fighting Robot Contest, which was his first experience with robotics. Circuit Cellar was the first magazine for which he wrote an article (“An HC11 File Manager,” two-part series, issues 129 and 130, 2001).

TECH INTERESTS:
Robotics, among other things. He is particularly interested in developmental and evolutionary robotics (where the robot’s strategies, controllers, and so forth are evolved instead of programmed in directly).

RECENT TECH ACQUISITION:
Walter is enjoying his Raspberry Pi. “What a remarkable product! I think it’s great that I can take my AI software, which I’ve been writing on a PC, copy it to the Raspberry Pi, compile it with GCC, then off it goes with little or no modification!”

CURRENT PROJECTS:
Walter is designing a new programming language and interpreter (for Windows/Mac/Linux, including the Raspberry Pi) that uses a simulated quantum computer to drive a robot. “What better way to learn the basics of quantum computing than by building a robot around one?” The first version of this language is available on his website (walterkrawec.org). He has plans to release an improved version.

THOUGHTS ON EMBEDDED TECH:
Walter said he is amazed with the power of the latest embedded technology, for example the Raspberry Pi. “For less than $40 you have a perfect controller for a robot that can handle incredibly complex programs. Slap on one of those USB battery packs and you have a fully mobile robot,” he said. He used a Pololu Maestro to interface the motors and analog sensors. “It all works and it does everything I need.” However, he added, “If you want to build any of this yourself by hand it can be much harder, especially since most of the cool stuff is surface mount, making it difficult to get started.”

Guido Cargnino Wins the CC Code Challenge (Week 25)

We have a winner of last week’s CC Weekly Code Challenge, sponsored by IAR Systems! We posted a code snippet with an error and challenged the engineering community to find the mistake!

Congratulations to Guido Cargnino of Grugliasco, Turin, Italy  for winning the CC Weekly Code Challenge for Week 25! Guido will receive an Elektor 2012 & 2011 Archive DVD.

Guido’s correct answer was randomly selected from the pool of responses that correctly identified an error in the code. Guido answered:

Line #14: *p and *q must be used.

2013_code_challenge_25_answer

You can see the complete list of weekly winners and code challenges here.

What is the CC Weekly Code Challenge?
Each week, Circuit Cellar’s technical editors purposely insert an error in a snippet of code. It could be a semantic error, a syntax error, a design error, a spelling error, or another bug the editors slip in. You are challenged to find the error.Once the submission deadline passes, Circuit Cellar will randomly select one winner from the group of respondents who submit the correct answer.

Inspired? Want to try this week’s challenge? Get started!

Submission Deadline: The deadline for each week’s challenge is Sunday, 12 PM EST. Refer to the Rules, Terms & Conditions for information about eligibility and prizes.

Client Profile: Digi International, Inc

Contact: Elizabeth Presson
elizabeth.presson@digi.com

Featured Product: The XBee product family (www.digi.com/xbee) is a series of modular products that make adding wireless technology easy and cost-effective. Whether you need a ZigBee module or a fast multipoint solution, 2.4 GHz or long-range 900 MHz—there’s an XBee to meet your specific requirements.

XBee Cloud Kit

Digi International XBee Cloud Kit

Product information: Digi now offers the XBee Wi-Fi Cloud Kit (www.digi.com/xbeewificloudkit) for those who want to try the XBee Wi-Fi (XB2B-WFUT-001) with seamless cloud connectivity. The Cloud Kit brings the Internet of Things (IoT) to the popular XBee platform. Built around Digi’s new XBee Wi-Fi
module, which fully integrates into the Device Cloud by Etherios, the kit is a simple way for anyone with an interest in M2M and the IoT to build a hardware prototype and integrate it into an Internet-based application. This kit is suitable for electronics engineers, software designers, educators, and innovators.

Exclusive Offer: The XBee Wi-Fi Cloud Kit includes an XBee Wi-Fi module; a development board with a variety of sensors and actuators; loose electronic prototyping parts to make circuits of your own; a free subscription to Device Cloud; fully customizable widgets to monitor and control connected devices; an open-source application that enables two-way communication and control with the development board over the Internet; and cables, accessories, and everything needed to connect to the web. The Cloud Kit costs $149.

FDMA Digital PMR Chipset

CMLMicro

CMX7131/CMX7141 FDMA dPMR chipset

Built on CML’s flexible FirmASIC technology, CMX7131/CMX7141 Frequency Division Multiple Access (FDMA) digital private mobile radio (dPMR) processors now include direct connection to the CMX994 direct conversion receiver IC. The chipset enables a single radio platform to deliver multiple dPMR systems.

Several CMX7131/CMX7141 function images support direct connection to the CMX994 DCRx IC. Function images include a comprehensive feature set and encompass much of each system air interface, minimizing the overall host support required. DCRx enables on-chip integration, so a small RF receiver can be produced with minimal external components.

The combination of the CMX7131/CMX7141 and CMX994 enables a high-integration, multi-standard FDMA D/A PMR that is well suited for next-generation FDMA dPMR radio designs. The CMX7131/CMX7141 and function images are available with low-power 3.3-V operation in small VQFN/LQFP packaging.

Contact CML for pricing.

CML Microcircuits, Plc
www.cmlmicro.com

Multi-GNSS Platform Supports Concurrent Positioning

ublox

UBX-48030 core-positioning platform

The u-blox M8 core-positioning platform is based on the UBX-M8030 concurrent multi-Global Navigation Satellite Systems (GNSS) receiver IC, which can track US GPS, European Galileo, Japanese QZSS, Russian GLONASS, and Chinese BeiDou satellites. The platform simultaneously uses multiple satellite systems and forms the basis of u-blox’s upcoming line of positioning modules that can concurrently acquire and track different satellite systems to achieve higher accuracy and reliability.

The u-blox M8 platform features low power consumption in concurrent reception mode via a single-die architecture combined with sophisticated software algorithms. The extended supply voltage supply range and 1.8-/3-V I/O compliance supports a variety of system architectures.

UBX-M8030 chips are available in miniature WL-CSP (2.99-mm × 3.21-mm × 0.36-mm) and QFN (5-mm × 5-mm × 0.59-mm) packages. The chip is also available in automotive-grade quality that complies with the Automotive Electronics Council’s AEC-Q100.The new platform maintains backward compatibility with u-blox 7 modules and QFP chip products.

Contact u-blox for pricing.

u-blox
www.u-blox.com