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> Faster better cheaper like NASA's recent probe to Mars?? just kidding.
ummm close, faster, better cheaper to mars, but more the the one that
made it, not the one that crashed.
> I guess I thought it would need two rcx's to control the mutiple pneumatic
> switches you have. Or does the grab cylinder trigger the lift cylinder
> automaticly? Is it like a pneumatic circuit?
>
> This would make sense, but how
> does it let go of the tower once it has been lifted up? More info, please.
yes it is a "circuit" its actually quite simple. I'll post lots of
info if only you and others promise not to use the ideas in there
robots. not that i have a problem with "copying" but its more a matter
of seeing what people can come up with on there own/
what happens is thus:
when i run motor b forward, it moves the pneumatic switch forward and
this is what closes the gripper. when the gripper is fully closed a
"tie rod" that is attached to one side of the gripper pushes a second
pneumatic switch closed, this then powers the cylinders to raise the
stack. when i reverse motor B, the gripper opens, the tie rod resets
the second switch and the gripper lowers.
quite simple really.
Eric has a great page that describes this here:
http://homepages.svc.fcj.hvu.nl/brok/legomind/insights/other/pneutime.html
> By
> the way, I am really intrigued with pneumatics, and just bought some recently,
> and I am thinking af how to integrate them into robotics. Do you have any
> really good switch designs?
Linc Smith has a nice motor switch design here:
http://www.members.home.net/ourcreations/linc/linc02.html
my bot use's the concept but i blew off the micromotor..... just to slow
and flimsy.
> Most I have seen are either hideously complicated
> and huge. I am looking for a cyclic design that would allow the switch to be
> flipped back and forth while running the motor in only one direction. Keep on
> building...
this i really have not come across.
i found this:
http://home.columbus.rr.com/jmatthew/john/lego/moc/pswitch/instructions/pnswitch.html
but i was too lazy to figure out if it was a continuous run motor.
Rob: do you have the number to Sprectum handy? could you post it for
the group please?
Chris
Lego Walker now @
www.members.home.net/cmagno/technics/index.htm
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Message is in Reply To:
 | | Re: did everyone have fun at mel's
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| (...) Well, maybe it was a shot. No, just kidding. Make sure youre robot works next time, and wow me. (...) Faster better cheaper like NASA's recent probe to Mars?? just kidding. I guess I thought it would need two rcx's to control the mutiple (...) (24 years ago, 19-Oct-00, to lugnet.org.ca.rtltoronto)
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