Subject:
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Re: Roboarm from Dave Baum's super book
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Newsgroups:
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lugnet.technic, lugnet.robotics
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Date:
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Thu, 30 Dec 1999 21:40:07 GMT
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Viewed:
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1080 times
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In article <FnKJw5.1xC@lugnet.com>, "Tim Wilkins" <Tim.Wilkins@zurich.com>
wrote:
> I wonder if someone can help me on a little problem with Roboarm.
> I have built it, programmed it and it runs OK except the the arm does not go
> down far enough to pick up.
> I have measured the shortfall in distance and it is exactly the height of the
> base.
> It is probably my bad building......has anyone else had this trouble ?
The arm itself should be just about level in the "down" position. If its
level but the grabbers don't reach the table, then there's probably
something wrong in the grabber assembly (or how the arm is attached to the
base). If it isn't level, then the touch sensor may not be detecting its
position correctly.
You may want to take a look at Figure 19-15 and make sure that you have a
grey half-peg and a black 1x2 brick attached to the 1x10 beam. If the
brick is missing, the arm probably won't raise high enough. If the
half-peg is missing, it won't lower properly.
I hope this helps.
Dave Baum
--
reply to: dbaum at enteract dot com
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Message has 1 Reply:
 | | Re: Roboarm from Dave Baum's super book
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| (...) the (...) Brilliant...it was the little half-peg. I was never very good at the "spot the difference between the two pictures" game. Thanks for writing a great book....it is so much better than the O'Reilly one. It hit Europe last week ! Maybe (...) (25 years ago, 30-Dec-99, to lugnet.technic, lugnet.robotics)
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Message is in Reply To:
| | Roboarm from Dave Baum's super book
|
| I wonder if someone can help me on a little problem with Roboarm. I have built it, programmed it and it runs OK except the the arm does not go down far enough to pick up. I have measured the shortfall in distance and it is exactly the height of the (...) (25 years ago, 30-Dec-99, to lugnet.technic, lugnet.robotics)
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