Circuit Cellar Ink 60
July 1995

Table of Contents

2 Ken Davidson	Editor's INK Habitech95
6	Reader's INK Letters to the Editor
8 Harv Weiner	New Product News
14 Mike Bailey	The Use of Color in Scientific Visualization Getting color right is no easy task! After reviewing a little physiology, Mike looks at how we define colors in computers. Final tips ensure information does not get construed by color choice.
24 Herschell Murry Mark Schneider	Virtual Reality Position Tracking Until recently, magnetic trackers existed solely in the workstation domain. But, with the popular advent of VR, trackers have joined the PC world. Here, Herschell and Mark introduce us to tracker technology.
30 James Goel	Digital Video Resizing and Compression Powerful processors and imaging techniques have made computer video possible. Here James introduces Genesis's resizing chips. They reduce, bypass, or zoom using FIR filters with up to 65 taps.
36 Chuck McManis	A PIC-based Motor Speed Controller To avoid the prohibitive cost of a packaged solution, Chuck takes the challenge to build his own DC motor speed control. His solution uses a PIC chip in a MOSFET H-bridge implementation. Download: SERVO.ZIP
Home Automation & Building Control 48 Harv Weiner	Innovations in Home Automation & Building Control
Home Automation & Building Control 51 Walter Banks Ashok Patel Sherif Abdel-Kader	, A Home Control System Based on Fuzzy Logic After reminding us of the basics of fuzzy logic, Walter and his associates concentrate on the needs of environmental control. They specifically look at some of the implementation quirks that come with writing fuzzy logic code for a home-control system.
Home Automation & Building Control 59 Grayson Evans	CAL: Part of the Solution Need a better feel for what's required in programming a CEBus application? If so, check out Grayson's article on CAL, the Common Application Language. As a key member of the CEBus committee, Grayson brings us an inside corner on the highest level of CEBus specification.
Home Automation & Building Control 69 Mitch Drummond	The Display-8 Add a Human Interface to Your Home Automation System While many home control systems operate passively in the background, users often like some hands-on interaction with the system. Display-8 offers that interaction in a small, unobtrusive package. Download: DISPLAY.ZIP
74 Ed Nisley	Firmware Furnace Journey to the Protected Land: The Mystery of Scan Code Set 3 Just a little chat -- with your keyboard that is. Building on the principles covered in last month's column, Ed shows us how to coax the PC into talking to the keyboard. Download: FF60.ZIP
82 Jeff Bachiochi	From the Bench Sacrifice for the Good of the Circuit: Strengthening the Weak Link Nothing beats a fuse for stopping overcurrent -- once. However, Jeff puts much more stock in resettable fuses. After explaining when a fuse is not a fuse, he runs us through the hoops of how to use these devices in various applications.
86 Tom Cantrell	Silicon Update MIPS for the Masses It was only a matter of time before traditional workstation-style RISC processors started making the move toward the embedded arena. Tom checks out the latest MIPS offering.
92 John Dybowski	Embedded Techniques Circuit Protection John picks up where Jeff leaves off with other popular forms of circuit protection. He combines various active and passive solutions -- from the wire that melts to something managing power overload actively.
81	Advertiser's Index
100 Ken Davidson	ConnecTime -- Excerpts from the Circuit Cellar BBS
112 Steve Ciarcia	Steve's Own INK Your Computerized Future

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