BoatBanter.com - View Single Post - Hank

Mr. Luddite

On 3/5/2014 10:26 AM, wrote:
On Wed, 05 Mar 2014 06:30:49 -0500, "Mr. Luddite"
wrote:

On 3/4/2014 10:59 PM, wrote:
On Tue, 04 Mar 2014 19:33:02 -0500, Wayne.B
wrote:

On Tue, 04 Mar 2014 19:27:07 -0500, wrote:

My millionaire Dutch neighbor has a quad rotor that looks like
something the NSA should have.

===

Someone was flying one of those at the Punta Gorda Jazz Fest last
week. Do you know where to get one and how much they cost?

Not a clue but I think he bought it in Germany. I know he still
tinkers with it a lot. This guy designs medical equipment and he was
working on the camera gimbal the last I heard, changing from a stepper
to a closed loop servo so it would pan smoother.

I don't see the advantage of a servo motor over a stepper in this
application.

A servo moves smoother than a stepper since there are no "steps".

I understand but the big advantage of a servo motor over a stepper is
high torque and at higher speeds. This application doesn't require
either. A geared, 200 pole stepper would be just as smooth, IMO, a lot
cheaper, plus a stepper can also be closed loop. Just my opinion having
used both for various purposes in remote actuators and motion devices
over the years.