October 1998 Issue Articles and Columns   Select Year and Month to View Other Issues

ARTICLES

SECURITY ELECTRONICS SYSTEMS AND CIRCUITS — PART 9 - Ray Marston
Take a look at a miscellaneous collection of security circuits in this next to the last installment.

FAMILY RADIO SERVICE RADIOS — FACTS AND MUCH FICTION - Gordon West
Find out what’s hype and what’s not about FRS.

THE COMPUTER CONTROLLED WORLD - Ryan Sheldon
Pictures for Windows: Control up to eight graphic LCD displays form Visual Basic 5 for Windows (part 2).

EMERGENCY TODDLER FINDER - Kenton Chun
With holiday shopping just around the corner, this handy device may be a relief to have with you when you’re out with your child.

SPI AND THE PRINTER PORT - Karl Lunt
Add up to eight devices to a single printer port, using little more than a ribbon cable and some C software.

BUILD THIS STEPPER MOTOR CONTROLLER - David Williams (PDF File 298kb)
If you’re interested in robotics, motion control, or just want to learn about stepper motors, then you should try building this versatile stepper motor controller.

A SONAR SENSOR FOR AMATEUR ROBOTIC PLATFORM - Lawrence Foltzer
Incorporate this “sensitive” device into your own homebrew projects.

COLUMNS

AMATEUR ROBOTICS NOTEBOOK - Robert Nansel
Making progress “the hard way” on Breadbot with the help of BS2, SIMMStick, VROC, and solder smoke.

OPEN CHANNEL - Joe Carr
Some more tools for radioscience observers.

RESOURCE BIN - Don Lancaster
New secrets of military surplus (part 1).