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SERVO Issue: 4.2009
SERVO Issue: 4.2009 
A3950 DC Motor Controller Tips and Tricks
by Jose I Quinones

DC motors are plentiful. My favorite source for heavyweight robotics projects is electric scooters. A motor capable of transporting a 250 pound human can move a lot of robot. However, DC motors require significant current handling at startup, and during increased load conditions and direction reversal.

Computer Control and Data Acquisition - Part 2
by David A. Ward

Part 2: An Introduction to National Instruments USB-6008 Data Acquisition Hardware. Part 1 introduced National Instruments LabVIEW software and had the reader build a very simple VI (virtual instrument). This article will introduce National Instrument’s most affordable computer interfacing hardware — the USB-6008(9) data acquisition units — and show how to use the digital features of the units.

Navigation and Tree Measurement
by Jaakko Jutila

Finland — the land of a thousand lakes and forests — is located in northern Europe. Water covers 10% of the total area of 338,000 square kilometers, and forests cover up to three fourths of the area. The country is the most forested one in Europe. The population totals approx. 5.3 million and in every square kilometer there lives approx. 15.5 inhabitants in average (1). In the US, for example, there are approx. 30.6 inhabitants per square kilometer (2).

Robot Vision for Everyone
by John Blankenship and Samuel Mishal

If you have ever tried to add vision to one of your robotic projects, you probably appreciate why you seldom see articles exploring the subject at the hobbyist level. The ability to experiment with vision — especially in the past — has generally only been accessible to university researchers or the rare hobbyists with advanced tools and capabilities.

Unwinding the AX-12+ Communication Protocol
by Fred Eady

I love to write robotic driver firmware and scratch build PIC microcontroller-based robotic hardware to run it. In this edition of SERVO, we’re not only going to sharpen our driver authoring skills, we’ll also get some flight time on the handle of a soldering iron.


SKU SKU16843
Weight 0.50 lbs
Selling Date 03/29/09
Price: $5.00


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