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Subject: 
Re: CD auto feeder project
Newsgroups: 
lugnet.robotics
Date: 
Tue, 4 May 2004 03:33:50 GMT
Original-From: 
Steve Baker <sjbaker1@*saynotospam*airmail.net>
Viewed: 
819 times
  
David Glynn wrote:

I don't think I'll have a problem with knowing when the drive opens, or
closing it afterwords, nor do I feel knowing where the CD/in/out trays will
be too difficult.What I feel is beyond my grasp (sorry for the phun) is th
finger on the end of the arm that must retrive the top disk from a large
stack of CDs and not drop it as the arm moves from point to point.

You could consider using a suction cup with a Lego pneumatics system providing
the vacuum.

(I vaguely recall a project that made a Lego robot that could climb
a sheer pane of glass using this kind of technique.  I know Rob Stehlik built it - but
every web site I've found that talks about it refers me to a non-existant web page.
Well - someone here will know how it was done.)

That way, you'd only have to lower your arm down on top of the stack until a
touch sensor triggers - then turn on the suction - move it over the CD tray and
release the suction.   Reverse the operation to deposit the finished CD into
the output hopper.

This would be a good approach since it would completely avoid the risk of scratching
the side of the CD with the data on it.

---------------------------- Steve Baker -------------------------
HomeEmail: <sjbaker1@airmail.net>    WorkEmail: <sjbaker@link.com>
HomePage : http://www.sjbaker.org
Projects : http://plib.sf.net    http://tuxaqfh.sf.net
            http://tuxkart.sf.net http://prettypoly.sf.net
-----BEGIN GEEK CODE BLOCK-----
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Message has 3 Replies:
  Re: CD auto feeder project
 
(...) Steve, I took a ride in the "internet way back machine" (google it) and found this: (URL) didn't know it was possible to create a vacume with the Lego pneumatic parts. Thanks I'll deleve a bit more down this path. (20 years ago, 4-May-04, to lugnet.robotics)
  Re: CD auto feeder project
 
(...) Sorry about that. I moved my website about 8 months ago, and tried to let people know, but some links never get fixed. If any of you know a good way to gather emails for the people with broken links on their sites, let me know. New home page: (...) (20 years ago, 5-May-04, to lugnet.robotics)
  Re: CD auto feeder project
 
(...) (David Glynn) (...) (Steve Baker) It's not finished yet, but hope this helps: (URL) massivng@iol.it (20 years ago, 6-May-04, to lugnet.robotics)

Message is in Reply To:
  CD auto feeder project
 
I haven't yet got my RIS, but I've promised it as a gift for myself for my upcoming birthday. But I've already set about creating my first challange; I want to create a simple arm roboot that will act as an auto feeder to a CD drive. It should (...) (20 years ago, 4-May-04, to lugnet.robotics)

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