Subject:
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Re: Pneumatic XOR Loops
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 9 Aug 2005 20:14:29 GMT
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Viewed:
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3093 times
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In lugnet.technic, Mark Bellis wrote:
> I've looked at the concept of multiple XOR gates being driven by a main loop and
> it will work, provided that you get the enabling sequence correct. The loop
> must not be allowed to advance till the XOR function has moved. Therefore the
> air supply to the cylinders of the next step in the loop has to be gated by a
> switch driven by the XOR cylinder.
Agreed. The lefmost switch of five for Pistons A serves this purpose:
http://www.brickshelf.com/gallery/kclague/SSClagorpion1/walk_cycle.jpg
>
> Another proviso is using extra isolating switches, driven by the XOR cylinder,
> on the enabling lines so that there is only ever one way to make the lines leak,
> wherever the functions driven by them are load-bearing or sprung in any way.
> They aren't on the P+P robot but on a walker they probably would be.
Hmmmm... can we have an example, timing diagram and schematic on this? I don't
understand.
>
> See also my P+P robot diagram:
> http://www.brickshelf.com/gallery/mbellis/Technic/Pneumatics/PnP-Robot/pnp_robot_circuit.jpg
>
> and my earlier post (not wishing to make this one too long!):
> http://news.lugnet.com/technic/?n=14429
>
> Mark
Thanks for all the dialog. I love it!
Kevin
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Message is in Reply To:
 | | Pneumatic XOR Loops
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| I've looked at the concept of multiple XOR gates being driven by a main loop and it will work, provided that you get the enabling sequence correct. The loop must not be allowed to advance till the XOR function has moved. Therefore the air supply to (...) (19 years ago, 9-Aug-05, to lugnet.technic)
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