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Date: Fri, 06 Jun 2014 09:30:12 +0200
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] Seized gear motor ~ steering questions and advice
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Reply-To: geda-user AT delorie DOT com

Il 06/06/2014 08:08, Rob Butts ha scritto:
> I'll try and take it apart tomorrow. In the meantime this is the link to
> the motor:
> 
> http://www.ebay.com/itm/30RPM-High-Torque-Gear-Box-Electric-Motor-12V-DC-37MM-/291106511233?pt=LH_DefaultDomain_0&hash=item43c74cd981
> 
> Maybe you can tell what kind of a motor it is.
> 
> Also, I've found information on a Nema 23 stepping motor which seems
> like what I should be using. It is a 1.8° 200 steps/revolution. It is a
> six wire connection uni-polar or a four wire connection bipolar with
> pinouts: A, A COM, A-, B, B COM, B- but I'm having a hard time finding
> information on how to drive this motor.
> 
>  
For this kind of stuff you should start studying stepper drivers, like
L6474 from STMicroelectronics for instance.

-- 
Hofstadter's Law:
"It always takes longer than you expect, even when you take into account
Hofstadter's Law."