Newsgroups: comp.robotics
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From: hollombe@polymath.tti.com (The Polymath)
Subject: Re: Trouble with stepper motor
Message-ID: <1992Aug18.004644.9134@ttinews.tti.com>
Keywords: stepper motor
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Organization: The Cat Factory
References: <1992Aug14.214916.4173@colorado.edu>
Date: Tue, 18 Aug 1992 00:46:44 GMT
Lines: 21

In article <1992Aug14.214916.4173@colorado.edu> mathis@tigger.cs.Colorado.EDU (Don Mathis) writes:
}I've got a 4-phase stepper motor that I'm trying to control, by
}sending it the required sequence of 4-bit patterns (1001, 1010, 0110,
}0101, repeat), and the motor runs for 2-6 seconds (hundreds of steps)
}and then it gets confused and just starts wiggling.
}
}Has anyone else had this problem?  
}
}The motor behaves as it would behave if it had gotten out of
}synchronization with the step commands, but I can't imagine why this
}would suddenly happen after hundreds of successful steps.
}
}Can anyone give me some advice?

Sounds like you're trying to drive it too fast.  Could something be
causing your clock rate to drift?  Try slowing down just a little.

The Polymath (aka: Jerry Hollombe, M.A., CDP, aka: hollombe@polymath.tti.com)
Head Robot Wrangler at Citicorp                   Turn the rascals out!
3100 Ocean Park Blvd.   (310) 450-9111, x2483     No incumbents in '92!
Santa Monica, CA  90405
