Subject:
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Re: Rack-and-pinion steering line tracker
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 7 Jan 2000 23:59:58 GMT
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Original-From:
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The WordMeister <dwilcox@wordsmithdigital.NOMORESPAMcom>
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Viewed:
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1986 times
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I spent a _lot_ of time trying to get a non-sensored R&P steering system to
work, using pulleys, rubber bands (both as drives and springs), and
you-name-it! I finally gave up, but did manage to build one with only _one_
sensor that was very effective.
See http://www.wordsmithdigital.com/mindstorms/ for a scan and my described
history of running my head into the wall. Should get you started in the
right direction--or avoid getting you started in the wrong direction.
Ironically, I've started playing with roboticizing the 8479 as well!
--Doug Wilcox
WordSmith Digital Document Services
403 VFW Drive
Rockland, MA 02370
781-871-6162
fax 781-871-6264
http://www.wordsmithdigital.com
ICQ# 24868783
- Web design (including e-commerce)
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-----Original Message-----
From: Simon Bogaert <Simon.Bogaert@advalvas.be>
To: lego-robotics@crynwr.com <lego-robotics@crynwr.com>
Date: Friday, January 07, 2000 6:52 PM
Subject: Rack-and-pinion steering line tracker
>
>
> I'm trying to get the 8479 Truck following (the edge of) a line. It drives
> around the whole room, except it doesn't follow the line (RIS 1.5 Test
> Pad). Is it possible to build a rack-and-pinion steering controlled by the
> RCX without using a sensor input? I let the steering motor return to the
> center after each steering action when a certain light value (37, the one
> measured at the edge of the line) is reached. The motor steers, but
> sometimes doesn't return to the center, although the edge is being crossed.
>
> I'm using RCX code to program the steeringbecause I just downloaded nqc nd
> I'm still learning.
>
> Has anyone built such a thing without using one or more sensor inputs?
>
> Thanks a lot in advance!
>
> Simon
>
>
>
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Message has 1 Reply:
 | | RE: Rack-and-pinion steering line tracker
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| I too spent quite some time trying to build a steering mechanism from standard Mindstorms parts. After many rebuilds I still wasn't quite satisfied. The final version actually worked pretty well, but was much too bulky (not as bulky as Doug's (...) (27 years ago, 8-Jan-00, to lugnet.robotics)
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