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Not quite that simple, but you could arrange a touch sensor to be actuated by a small cylinder. Use a number of rubber bands to hold the cylinder "in" or ""down" to equal the force corresponding to the pressure you want in the tank. Put air from the (...) (23 years ago, 9-Feb-01, to lugnet.technic, lugnet.robotics)
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(...) I've just put a brief description and some photos of my new "pneumatic and electric hand controller with integrated on demand compressor" doohickey on my website. It uses the switch on the small black 9V battery box as part of the pressure (...) (23 years ago, 9-Feb-01, to lugnet.technic, lugnet.robotics)
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(...) Brilliant... I see that you've switched to the new motors for the compressor? Are they better afterall? Kind regards John Jensen (23 years ago, 9-Feb-01, to lugnet.technic)
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(...) double acting compressor using a single cylinder & 2 of the old pneumatic bricks, but your design is probably more compact! ROSCO (23 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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good gracious! That's amazing...that's what I was kinda thinking about playing with... fantastic job! -- "...and all that road going, all the people dreaming in the immensity of it...and tonight the stars'll be out, and don't you know God is Pooh (...) (23 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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"Jennifer Clark" <jen@vulture.dmem.strath.ac.uk> wrote in message news:G8IGv1.92K@lugnet.com... (...) if (...) on (...) of (...) I can testify first hand on what an ingenious device this is! Huw (23 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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(...) While I think they are comparable in terms of maximum achievable air pressure, the airflow rate is actually worse than the "old" compressor which used an old 9V motor geared down five times driving a single pump. In other words, the model will (...) (23 years ago, 10-Feb-01, to lugnet.technic)
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(...) That's a pretty cool idea, and it would probably shave off a stud or two of width from a compressor built in a similar configuration to mine. The only thing I have wondered about with the cylinders (and this applies to them in normal use as (...) (23 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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(...) Thanks Huw! It has been improved since you saw it by adding a second compressor pump making the airflow rate far more respectable... I was never really happy with the speed of pneumatic operations when only using the one pump. Jennifer Clark (23 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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(...) Yeah, I'd thought about that, but my application was gonna include an air tank, which would alleviate the problem a bit. Without a tank, there'd probably be a noticable effect, depending on how long your lines are. I've found the Lego ones are (...) (23 years ago, 10-Feb-01, to lugnet.technic, lugnet.robotics)
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WOW!! That is an amazing piece of work. Have you figured out if there is a way to do it with a Technic 9V battery box, such as the one included in the Technic Space Shuttle? One thing I have noticed with some motors is that they will turn - or at (...) (23 years ago, 11-Feb-01, to lugnet.technic, lugnet.robotics)
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(...) I'm sure it is possible, as the switch on it is also spring loaded and has a "motor on but switch not locked in place" setting. You'll still have to do some lego modification by soldering at least one other cable directly to the battery (...) (23 years ago, 12-Feb-01, to lugnet.technic, lugnet.robotics)
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Jennifer Clark <jen@vulture.dmem.strath.ac.uk> wrote in message news:3A87CF43.4C05B6...h.ac.uk... (...) the (...) a (...) some (...) battery (...) One possibility may be to use a Mindstorms touch sensor to switch it on/off. This would remove the (...) (23 years ago, 12-Feb-01, to lugnet.technic, lugnet.robotics)
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