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Posted by Joe Pfeiffer on April 2, 2008, 10:19 pm
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writes:
> This ought to be good for some laughs from a few of you, but I am serious in
asking the question:
>
> Is there a way to wire up standard stepper (4, 5, or 6 wire) motors so
> they can be driven forward/backward like a "normal" DC motor without a
> stepper-specific driver?
In a word, no. They require the coils to be energized in sequence.
I don't really know, though, whether a brushless DC motor controller
chip could be used to control a stepper...
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Posted by on April 3, 2008, 11:46 am
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On Apr 2, 5:02=A0pm, "pogo"
> This ought to be good for some laughs from a few of you, but I am serious =
in asking the question:
>
> Is there a way to wire up standard stepper (4, 5, or 6 wire) motors so the=
y can be driven forward/backward like a "normal" DC
> motor without a stepper-specific driver
Ok here's an idea... rotary switch attached to the output shaft
of the motor... time the switch to turn on the correct coil depending
on shaft rotation...
all the stepper motor is : stationary magnet(s) on rotor,
electromagnets
around stator.. wires come out of case for each coil, no timing done
in
case (need external driver circuit)
a standard DC motor is the same deal, except with stationary
electromagnets
and rotating permanent magnets..... it als has a switch inside it to
time the ON/OFF sequence of the coils... on one side of the switch
is
the brushes, the other contact is the commutator on the rotor.
so put a rotary switch on it... I dunno if you'll be able to run at
anything
besides a constant speed... and it might be hard to find a (number of
stepper
coils) contact rotary switch... IE a 4 position rotary switch for 4
coil stepper
Rich
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Posted by John Nagle on April 3, 2008, 12:32 pm
Please log in for more thread options aiiadict@gmail.com wrote:
> On Apr 2, 5:02 pm, "pogo"
>> This ought to be good for some laughs from a few of you, but I am serious in
asking the question:
>>
>> Is there a way to wire up standard stepper (4, 5, or 6 wire) motors so they
can be driven forward/backward like a "normal" DC
>> motor without a stepper-specific driver
>
> Ok here's an idea... rotary switch attached to the output shaft
> of the motor... time the switch to turn on the correct coil depending
> on shaft rotation...
Now that's using the wrong tool for the job. That might
have been worth trying in, say, 1965. But now, there are these
things called ICs...
There are little kits that have a stepper motor driver IC
like a UCN5804, a timer to drive it, and a speed control knob.
John Nagle
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Posted by on April 5, 2008, 2:11 pm
Please log in for more thread options On Thu, 3 Apr 2008, John Nagle wrote:
> Date: Thu, 03 Apr 2008 09:32:12 -0700
> Newsgroups: comp.robotics.misc
> Subject: Re: wire up standard steppers as regular motors ?
>
> There are little kits that have a stepper motor driver IC
> like a UCN5804, a timer to drive it, and a speed control knob.
>
> John Nagle
>
John,
Can you provide a link to one of those little kits????????
Cheers,
Rob.
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Posted by on April 5, 2008, 5:56 pm
Please log in for more thread options > =A0 =A0 =A0Now that's using the wrong tool for the job. =A0That might
> have been worth trying in, say, 1965.
I was replying to this question:
>Is there a way to wire up standard stepper (4, 5, or 6 wire) motors
>so they can be driven forward/backward like a "normal" DC motor
>without a stepper-specific driver
so, it might be "wrong tool for the job" but it is a reply to someone
who asked "how to do the job without the right tool"....
Rich
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