Subject:
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pneumatic switch control
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 22 Apr 1999 19:41:54 GMT
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Original-From:
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Joel Shafer <JOEL@saynotospamCONNECT.NET>
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Viewed:
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1134 times
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> Now I need to find a way to control two or more pneumatic switches with a
> single motor, in both directions!
I've been thinking about this a lot...
What about using a differential to separate motor direction output.
Turning one direction could control one switch and turning the other could
control the other switch. The switches could be controlled in a cyclic
motion so that turning the motor in a single direction could cycle through
all switch positions. A touch sensor could be used to indicate extreme
switch positions. In this scenario since you wouldn't be operating both
air switches at the same time, the touch sensors could be piggybacked onto
the same input port.
What do you think? sounds like another Rube Goldberg contraption :)
Joel Shafer joel@connect.net
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 3 Replies:
 | | Re: pneumatic switch control
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| (...) Rather than that, how about triggering one switch automatically at the end of travel of the other? For instance, you won't dump your bucket on the front end loader until it is a max height. Have the motor control the lift are with a sensor (...) (26 years ago, 22-Apr-99, to lugnet.robotics)
| | | Re: pneumatic switch control
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| I just got my RIS as well as some pneumatic parts yesterday. The timing couldn't be worse as I'm in the middle of finals and can't spare much time for non-studying activities. However, your suggestion inspired me to take a study break and open up my (...) (26 years ago, 23-Apr-99, to lugnet.robotics)
| | | Re: pneumatic switch control
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| At 05:13 AM 4/23/99 -0400, you wrote: <snip> (...) Awesome. It was easy to think of, but I'm not sure that I could have built it as well as you. I particularly like the cam mechanism that you developed, and the use of just one touch sensor. Very (...) (26 years ago, 23-Apr-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Tow Truck & pneumatics
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| (...) Cool, let us know if you get it. It would be interesting to know what nifty parts it has. I had a tough time deciding between the front end loader and the tow truck. Both appeared to have the pneumatics and extra parts that I wanted to use (...) (26 years ago, 22-Apr-99, to lugnet.robotics)
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