SERVO Magazine - April 2011

Stepper Motor Control Experiments With VEX


Features

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CPLDs — Part 2: Graphical Programming of a CPLD
by David A. Ward
We’ll get right into some CPLD programming and look at breadboarding and testing, as well. Page 52

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Give Your Robot the Bootloader
by Fred Eady
Bootloading provides a very useful layer of control. Once the base bootloader code is loaded into your robot’s program Flash, you can read, write, and erase it without having to use a hardware programmer. Page 58

Projects

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VEX Stepper Motor Control Experiments

by Daniel Ramirez

This time, build a simpler version of the SunBot with beefier stepper motors that are powerful enough to directly drive the solar panel’s azimuth and elevation axes. Page 43

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Build Your Own Big Walker

by Daniel Albert

Part 3. This segment focuses on the design and implementation of the bot’s multi-processor distributed processing system. Page 63

Columns

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Robytes
by Jeff Eckert
Robytes
Stimulating Robot Tidbits Page 08

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GeerHead
by David Geer
GeerHead
DARwIn-OP Robot Page 10

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Ask Mr. Roboto
by Dennis Clark
Ask Mr. Roboto
Your Problems Solved Here Page 14

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The NXT Big Thing
by Greg Intermaggio
The NXT Big Thing #9
Rad Radar! Page 70

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Then and Now
by Tom Carroll
Then and Now
What Does It Take to Build a Robot? Page 76

Combat Zone

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BUILD REPORT: Apollyon 2
in Combat Zone: Features
Concept to Creation. Page 24

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So You Want to Fight Robots?
in Combat Zone: Features
Turning Your Destructive Instincts into a Socially Acceptable Hobby Page 26

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EVENT REPORT: 2011 Chattanooga Robot Battles
in Combat Zone: Events
The 2011 Chattanooga Robot Battles event was held on Saturday, January 22nd at the Chattacon Sci-Fi convention in Chattanooga, TN. Page 29

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VIDEO REVIEW: Bots High
in Combat Zone: Features
Joey Daoud, a BotsIQ veteran and film school graduate, has produced a documentary about the sport. SERVO was given the opportunity to do a pre-release screening. We enlisted a journalist of similar age and background to review this interesting video. Page 31