Sean Breheny wrote:
> In school, we used equipment from:
>=20
> http://www.quanser.com/choice.asp
>=20
> Quanser Consulting for Control Systems labs. We had a movable stage
> similar to what you describe. It used a brushed motor, encoder, and a
> rack and pinion mechanism.

Thanks. I have written to them and will see what they say.

-- Dave Tweed
--=20
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