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That is a really nice way to drive the pneumatics system from a motor! Excellent!! It opens the door to RCX controlled pneumatic "effectors" rather neatly. You can hide the motor and pump assembly in the "guts" of the beast while placing the (...) (23 years ago, 28-Nov-01, to lugnet.robotics)
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| | Re: Pneumatic pump and switch version 2
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(...) It's easy to make an all LEGO shut off switch. Use a Polarity switch and a small cylinder. Use elastic bands to hold it to offset the air pressure. When the pressure is enough to push the piston up it toggles the switch and cuts the power. (...) (23 years ago, 28-Nov-01, to lugnet.robotics)
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| | Re: Pneumatic pump and switch version 2
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This is a nice compact implementation of the system I used in Quad_I ( (URL) ), except I was using the large pumps. However, there's another, reasonably nifty way, that builds onto the back of the Hempel double-acting small-pump design. Some photos (...) (23 years ago, 29-Nov-01, to lugnet.robotics)
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| | Re: Pneumatic pump and switch version 2
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(...) To have a pressure sensor would be very nice. You could have multiple of the pumps & switches (using a single air tank). Depending on the pressure the RCX can control the time that is needed to recover pressure. And whenever you need some (...) (23 years ago, 3-Dec-01, to lugnet.robotics)
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| | Re: Pneumatic pump and switch version 2
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Edmund Nussbaum wrote:To have a pressure sensor would be very nice. You could (...) Try to get disposable pressure sensors used in hospitals. They just cost about $10, the gain is calibrated at an accuracy of 1 mmHg, the offset is very stable and (...) (23 years ago, 3-Dec-01, to lugnet.robotics)
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