Circuit Cellar Ink 199
February 2007

Table of Contents

4 CJ Abate	HTML Task Manager What's Your Thing?
8 John Gorsky	New Product News WL01 Wireless LAN module from Beck IPC GmbH PearlBlue Class 1 intelligent Bluetooth module from emxys 9000 Sonar Ranging Module from SensComp, Inc. MRF24J40 2.4-GHz IEEE 802.15.4 (ZigBee) transceiver from Microchip Technology, Inc. HYDRA Propeller-powered Game Console from Parallax, Inc. DSO-8502 PC-based oscilloscope from Link Instruments, Inc. LTC4263 Power Sourcing Equipment (PSE) controller from Linear Technology Corp. TFDU7100 IrDA transceiver from Vishay Intertechnology
14 John Caruana Doug Irvine Matthew Quenet Chris Cheng	Modular Wireless Tracking System Children, vehicles, and animals all have something in common: they are always on the move. With this modular wireless tracking system, you can keep tabs on the moving objects of your choice. The system features a GPS module, a digital compass, and an LCD. Download: Caruana-199.zip
24 Craig Ross Ricardo Goto	RFID Security System Craig and Ricardo designed an RFID-based proximity security system for use with identification cards. The system communicates with an administrator PC via a serial communications link and HyperTerminal. Download: Ross-199.zip
32 Chris Hiszpanski	DSP-Based Vehicle Monitoring Chris's iTrack DSP-based vehicle-monitoring system features remote cellular control.You can use your cell phone to locate your vehicle and control everything from its headlights to its door locks. Download: Hispanski-199.zip
40 Peter Csaszar	Nixie Tube Propeller Clock Peter built his Nixie Tube Propeller Clock (NTPC) around a Microchip PIC16F84A microcontroller. The firmware was developed in assembly language with the MPLAB development suite. Download: Csaszar-199.zip
46 Ko Ihara Kashif Javed	Build a Reflow Oven Controller If you're having trouble soldering small chips, try reflow soldering. Ko and Kashif explain how to design a reflow soldering oven that won't burn a hole in your wallet. Download: Ihara-199.zip
54 Alex Deyneko	Wireless Firmware Updates Alex shows you how to perform a remote firmware update. You can use this technique for virtually all of your mobile and robotics applications. Now you don't have to disassemble your devices and their physical connections to CPU boards. Download: Deyneko-199.zip
Above the Ground Plane 62 Ed Nisley	Battery Capacity Discharge You can't do much to improve battery design. You can, however, do your best to understand their chemistry, how they work, and how they behave under various loads. Ed focuses on the discharge portion of the battery cycle. Download: Nisley-199.zip
Applied PCs 68 Fred Eady	Embedded Capacitive Touch Applications Get ready to build a capacitive touch application. Fred covers the basics and then describes useful capacitive touch sensing techniques for CapSense-enabled PSoC devices. Download: Eady-199.zip
From the Bench 74 Jeff Bachiochi	Electric Movement and Control Electric power or gas? As the debate over the use and abuse of energy resources rages on, Jeff weighs in with some useful information about electric vehicles. How do they operate, and how can you apply your engineering skills to get a working design on the road? Read on to learn how he mapped the energy consumption for an electric bicycle.
Silicon Update 80 Tom Cantrell	Traveling Man Tom recently traveled to the Embedded Systems Conference in Boston and the ARM Developers' Conference in Santa Clara. This month, he introduces many of the new embedded technologies that may soon figure prominently in your designs.
93	Crossword Puzzle
94	Advertiser's Index / March Preview
96 Steve Ciarcia	HTML Priority Interrupt A Home Control Event Worth Remembering

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