February 1997 Issue Articles and Columns   Select Year and Month to View Other Issues

ARTICLES

SERIAL COMMUNICATIONS AND PROTOCOL STACKS: WHY ALL THE LAYERS? — Part 1 - Jeff Stefan
Learn the concept of layered protocol stacks and discover interrupt driven serial communications routines to use in your own applications.

BUILD A THREE-AXIS STEPPER MOTOR CONTROLLER - Daniel Eggert
Control up to three stepper motors simultaneously and independently using your serial port.

THE BENDER-2PP TUBE PUSH-PULL AMPLIFIER REBUILD PROJECT — Part 1 - Steve Bender
Give an old transistor a new twist with this unique project.

BUYING USED TEST EQUIPMENT - Gerald Roylance
Although there are good deals out there, purchasing used test equipment can be a gamble ... unless you know what you're doing.

PORTABLE GPS MAPS GO INLAND - Gordon West
Now you can use your marine unit on shore with the help of new cartography cartridges.

AN INEXPENSIVE HOME SECURITY CAMERA SWITCHER - George Cole
Construct this low-cost circuit which allows for selective switching of up to eight cameras, plus gives a numeric readout of which view is being presented.

COLUMNS

AMATEUR ROBOTICS - Karl Lunt
Build the marble maze-runner.

OPEN CHANNEL - Joe Carr
More on data acquisition and sensor resolution.

RESOURCE BIN - Don Lancaster
A few of Don's favorite web sites.

STAMP APPLICATIONS - Scott Edwards
Learn how to connect your Stamp to the global phone system via a modem, plus add a display and other features to the ongoing three-lane race timer project.

SOFTWARE WIZARDRY - Harry Helms
Make a good image with PCs.