Re: [CAD_CAM_EDM_DRO] Servos and Controller boards

hmmm. Once I do a hack to make a servo go around and around, I will loose
the benefit of servos: the ability to have exact movement, and if the
movement is resisted against for a moment, it will keep trying to move to
the next position?

thanks for the help!-lee

----- Original Message -----
From: "Greg Nuspel" <nuspel@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, April 10, 2004 7:34 AM
Subject: Re: [CAD_CAM_EDM_DRO] Servos and Controller boards


> I take it you are hacking RC servos. For the lead screw servo you will
need
> to drive the potentiometer usually connected to the servo output gear by
the
> position of the item you are driving. If you don't want proportional
control
> you can disconnect the potentiometer from the drive train and you will end
> up with a forward reverse control on the lead screw without position feed
> back.
>
> If I misunderstood the question please disregard the ramblings.
>
> Greg
>
> ----- Original Message -----
> From: "Trend" <fredit@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, April 10, 2004 1:55 AM
> Subject: [CAD_CAM_EDM_DRO] Servos and Controller boards
>
>
> > Hello again.
> > I am looking to build a new project. This project will need 2 servos.
> One
> > that will need to drive a ballscrew or acme (hacked servo), and the
other
> > servo would only need to rotate 90degrees (so a non hacked servo).
> >
> > Firstly, where would you'll recommend to get nice servos from (I would
> like
> > 100oz+ torque)
> >
> > And secondly, where should I look to get a controller board?
> > I found:
> >
>
http://www.jameco.com/cgi-bin/ncommerce3/ProductDisplay?prmenbr=91&prrfnbr=4152&cgrfnbr=501&ctgys=
> >
> > but, does anyone have any experience with this? can this work hacked
> ones?..
> > And i wonder how you control the voltage to the servos on this.
> >
> > any help would be awsome!
> >
> > thanks-Lee
> >
> >
> >
> >
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> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
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