Subject:
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Re: A LEGO double-throw switch?
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 23 Aug 2005 02:42:16 GMT
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Viewed:
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1154 times
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In lugnet.robotics, Steve Hassenplug (& others) wrote:
[snip a bunch of good ideas]
Wow, ask a simple question... Currently I'm planning on using one switch that
is normally off, and when the forklift delivers a crate it turns it "on-fwd".
When the crate reaches the far end, it (the actual crate, btw, not the conveyor)
pushes a mechanical linkage (or trips a spring-loaded linkage if need be) that
pushes the single polarity switch back to "off". BUT... this is only likely to
work well over rather short distance, so I was looking for an electrical way of
solving this as well.
Steve, using two polarity switches and "tuning" their relative positioning
you could make a "virtual" polarity switch who's deadzone would be as small as
you like it, I think.
Dang, wouldn't you know it, still more uses for those blasted polarity
switches. Pitsco must *love* me...
--
Brian Davis
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Message has 1 Reply:
 | | Re: A LEGO double-throw switch?
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| (...) Okay Brian - an electrical way...and remember, you didn't say "cheap" electrical way... So - we all marvel at the efficiency of Lego motors, right? You could put a motor at the tail end of the conveyor where the crate will hit it...it can be (...) (19 years ago, 23-Aug-05, to lugnet.robotics)
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Message is in Reply To:
| | Re: A LEGO double-throw switch?
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| (...) No, because it's only wrong half the time. HOWEVER, now that I think about it, you could mechanically connect two polarity switches together at the end with the motor. Then, instead of connecting one wire from each of the polarity switches to (...) (19 years ago, 22-Aug-05, to lugnet.robotics)
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