Circuit Cellar Ink 4
July/August 1988

1

Editor's INK

The Market-Driven Myth

2

Reader's INK

Letters to the Editor

5

Circuit Cellar Stepper Motor Scanning Sonar Sensor

A Look at the Logic and Control of Stepper Motors

Download: SEQUENCE.ARC SONAR.ARC

18

Visible INK

Letters to the INK Research Staff

21

The Home Satellite Weather Center -- Part 4

Dial-Up Databases and a 68000 Peripheral Processor

Download: WXRDR10.ARC

29

INK Spot -- Guest Editorial

Bigger is not necessarily better

30

ConnecTime -- Excerpts from the Circuit Cellar BBS

36

Circuit Cellar Neighborhood Strategic Defense Initiative

Building the Bottle Launcher and Gantry

38

Firmware Furnace

Using the IBM PC Joystick Port

Download: JOYSTICK.ARC

49

Stepping Out

A Robot Arm that Demonstrates Microprocessor Control of Stepper Motors

Download: ROBOT.ASM ROBOT.BAS

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