Subject:
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Re: Pneumatic Digger (with Pneumatic Solenoid Valves)
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Newsgroups:
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lugnet.technic
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Date:
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Wed, 9 Feb 2000 11:14:35 GMT
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Viewed:
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1210 times
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Smile... yeah, the motor-driven rotation leaves a bit to be desired; the
pneumatic digger arm is much cooler. I was shooting for a quick "proof of
concept" to test out the performance of the solenoid valves and see if I wanted
to buy any. (They are in such short supply that the 'roommate discount' won't
get me too far...) :-)
I like the fact that we had to think a bit creatively to get the four arm
actions and three pneumatic rams to be controlled with just two solenoids. They
ended up being a lot more versatile than I had first realized. Needless to say,
I bought a few, and I can't wait to try and have the RCX control some of the
old classic pneumatic designs, as well as whatever new creations I can come up
with. (Hmmm… maybe it's time for an RCX-controlled pneumatic stair-bot…)
In any case, the solenoids are definitely worth a look.
Take care,
- Jeff Barrett
In lugnet.technic, Kevin Maynes writes:
> In lugnet.technic, Daniel Delcollo writes:
> > My roomate recently completed a project creating a pneumatic Digger using my
> > RCX Compatable Pneumatic valves and his RCX. The results can be seen at:
> >
> > http://www.jps.net/henrik/danweb/solenoid/solenoid4.html
> >
> > and of course check out my ongoing RCX Compatable Pneumatic Valve Sale at:
> >
> > http://www.jps.net/henrik/danweb/solenoid/solenoid3.html
> >
> > thanks.
>
> Luuuuvv It!
> That is so cool. The action of the pneumatics has a nice feel to it, with the
> attack/decay rate through the stroke. The RCX-controlled electric rotation,
> however, leaves a bit to be desired (yes, I fully admit to nitpicking in this
> case). It might have a neater, more "real" feel if the RCX were programmed to
> accelerate & decelerate the motor when rotating. Easy to say, not so much so • to
> do, but there you are.
> As for solenoids, you mention on the solenoid3 page that you need a source for
> more - have you tried www.clippard.com ? Hardly surplus (read cheap), but it
> might be a more stable source for the long term.
>
> My two cents
> K.M.
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Message is in Reply To:
 | | Re: Pneumatic Digger (with Pneumatic Solenoid Valves)
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| (...) Luuuuvv It! That is so cool. The action of the pneumatics has a nice feel to it, with the attack/decay rate through the stroke. The RCX-controlled electric rotation, however, leaves a bit to be desired (yes, I fully admit to nitpicking in this (...) (25 years ago, 9-Feb-00, to lugnet.technic)
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