Re: What is the simplest way to control a motor's speed

Hi Doug,

From my experience which is rather limited, you have a couple of
options:

Stepper - use a step/direction controller and a PC to vary speed
DC Motor - use a Pulse Width Modulation Speed controller (PWM)
AC Motor - Use a TRIAC Speed controller (do a search for Router Speed
Controller). They can be bought prebuilt for $35 Canadian through
Busy Bee Tools http://www.busybeetools.com

Steve Manzer

--- In CAD_CAM_EDM_DRO@y..., Bill Vance <ccq@x> wrote:
> You could try a rheostat control, such as is, (or at least used to
be), used to
> control the speed of model trains, etc.
>
> Bill
>
>
> On Wed Aug 28 21:12:43 2002, wdnick, <wdnick@y...> wrote:
>
> >I have a couple of boxes of stepper motors mostly salvaged from
old
> >printers and copiers. I also have a few small 5-24V DC motors
laying
> >around. Eventually, I'm going to build myself a small CNC
machine,
> >but until I have time and resources my current project seems
fairly
> >simple. I need to control a motors speed over a range of 0 to
near
> >100% with a potentiometer. I don't care anything about reversing
it,
> >what it's position is, or if it is a stepper or dc or RC servo. I
> >would prefer the cheapest and simplest way out. I have found tons
of
> >stuff on the net, but everything seems to be oriented around a
> >microcontroller or PC control and all I want is a simple speed
> >control. Can someone give me a suggestion on where to look for a
> >prebuilt solution or a decent kit?
> >
> >Thanks,
> >Doug Nicholson
>
>
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