Cover - 238.qxp 4/12/2010 7:06 PM Page 1 CIRCUIT CELLAR DIY Home Automation, p. 26 • Build a Network Service Monitor, p. 36 • Custom MCU-Based Machine Control, p. 60 THE MAGAZINE FOR COMPUTER A P P L I C AT I O N S #238 May 2010 MEASUREMENT & SENSORS Inertial Measurement Unit Design Infrared Tech & Next-Generation Sensing Applications An OAE Probe Amp/Intercom System C Language Tutorial: Phase 2 $5.95 U.S. ($6.95 Canada) www.circuitcellar.com C2.qxp 12/4/2009 2:11 PM Page 1 SSH Encrypted SERIAL TO ETHERNET SOLUTIONS Instantly network-enable any serial device Works out of the box no programming is required Device P/N: SB70LC-100CR Kit P/N: NNDK-SB70LC-KIT $47 Qty. 1000 Customize to suit any application with low-cost development kit SB70LC 256-bit encryption protects data from unauthorized monitoring 2-port serial-to-Ethernet server Features: 10/100 Ethernet TCP/UDP/SSH/SSL modes DHCP/Static IP Support Data rates up to 921.6kbps Web-based configuration Device P/N: SB700-EX-100CR Kit P/N: NNDK-SB700EX-KIT SB700EX 2-port serial-to-Ethernet server with RS-232 & RS-485/422 support $129 Qty. 1000 Need a custom solution? NetBurner Serial to Ethernet Development Kits are available to customize any aspect of operation including web pages, data filtering, or custom network applications. All kits include platform hardware, ANSI C/C++ compiler, TCP/IP stack, web server, email protocols, RTOS, flash file system, Eclipse IDE, debugger, cables and power supply. The NetBurner Security Suite option includes SSH v1 & v2 support. Device P/N: CB34-EX-100IR Kit P/N: NNDK-CB34EX-KIT $149 Qty. 1000 CB34EX industrial temperature grade 2-port serial-to-Ethernet server with RS-232 & RS-485/422 support and terminal block connector Information and Sales |
[email protected] Web | www.netburner.com Telephone | 1-800-695-6828 9.qxp 8/7/2008 11:04 AM Page 1 2_3.qxp 2/9/2010 9:50 AM Page 1 2_3.qxp 2/9/2010 9:51 AM Page 2 Task_Masthead_238.qxp 4/14/2010 8:15 AM Page 4 T ASK MANAGER The Future Is Now May 2010 – Issue 238 E 4 very issue of Circuit Cellar is special. But this issue strikes me as particularly extraordinary. Why? Here we present articles about some of the most innovative, talked-about, 21st-century technologies. These are concepts that your EE forefathers couldn’t have imagined—and even if a few of them did dream of something similar to such technologies, they likely treated the ideas as more fiction than fact. Which technologies am I talking about? An inertial measurement unit (think: unmanned aircraft), a home automation system for an energy-efficient home (think: home control), portable monitoring devices (think: realtime server maintenance), and custom machine control circuits (think: programmed system operation) are examples. If you take nothing else from this issue (which is doubtful), remember this: the future is now. Technology is so advanced that you can make most far-out ideas a reality. The key is being able to quickly gather quality information about cutting-edge technology so you can start working on the designs that were things of fiction only a few years ago. We’re here to help. Start with TJ Bordelon’s article titled “The FreeSpace IMU“ (p. 14). You learn not only about inertial measurement units, but also about a quaternion-based