 | | Re: Pneumatic Quadraped 242
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I got a new web site with plenty of room, so I've uploaded Quad242 movies. The website is (URL) As usual, my creations are listed in chronological order, so Quad242 ((URL) is at the end of the creation list. There are movies for walking forward and (...) (21 years ago, 24-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
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| | Re: Pneumatic Quadraped 242
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Thanks, Kevin, quadraped explanations are very interesting, and you sequencer paper is a "must read" !!! Philo (21 years ago, 24-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
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| | Re: Pneumatic Quadraped 242
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(...) Cool! Would it benefit from turntables between the feet and legs? These turntable 2 x 2: (URL) these turntable 4 x 4: (URL) like it looses alot of traction, perhaps if the foot could remain more still it would be better? (21 years ago, 24-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
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| | Re: Pneumatic Quadraped 242
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(...) Thanks Tobbe! (...) How would turntables help the design? Right now the whole thing is studless except for the feet. To use the studly turntables would require major framework redesign (not that that is a bad thing :^) You are right it is not (...) (21 years ago, 24-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
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| | Re: Pneumatic Quadraped 242
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(...) Thanks Philo! So far the feedback on the sequencer paper has been positive. Now that I've learned enough to write that paper, I'm prepared to make some really complicated pneumatic circuits. The cornerstone of the sequencer design methodology (...) (21 years ago, 24-Nov-03, to lugnet.technic, lugnet.build, lugnet.robotics)
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| | Simulating pneumatic sequencers, was Re: Pneumatic Quadraped 242
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(...) Hi Kevin and all, I wanted to experiment with your sequencers without fussing too much with time consuming building, so I used simulation... I used a free electronics simulator, CircuitMaker Student ((URL) Piston + switch are equivalent to an (...) (21 years ago, 26-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: Simulating pneumatic sequencers, was Re: Pneumatic Quadraped 242
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(...) Philo, Hey! Great stuff! I've been aware of the electrical equivalence, but not mentioned it. Maybe if you put capacitors in series at the inputs of each flop, your test points might have less vertical slope. I'll probably use the simulator to (...) (21 years ago, 26-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: Simulating pneumatic sequencers, was Re: Pneumatic Quadraped 242
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(...) Philo, Have you seen this? (URL) amazingly like your SR flop schematics. Kevin (...) (21 years ago, 26-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: Simulating pneumatic sequencers, was Re: Pneumatic Quadraped 242
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(...) To do that you have to use the simulator in analog mode, I'm not sure it would work on that kind of circuit (and if it did the simulation would be MUCH slower) Philo (21 years ago, 26-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: Simulating pneumatic sequencers, was Re: Pneumatic Quadraped 242
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(...) Philo, I downloaded the tools, and entered the base schematic for Quad242. Quad242 depends on some initial conditions where 4 of the 5 flops have a value of 1. I've read the docs and not found a way to preset the flops. Any ideas? Your choice (...) (21 years ago, 28-Nov-03, to lugnet.technic, lugnet.robotics)
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| | Re: Simulating pneumatic sequencers, was Re: Pneumatic Quadraped 242
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(...) Hi Kevin, Here is a simple circuit that also require some initialisation: (URL) didn't find the digital equivalent of the .IC (initial condition) used in analog simulations, but if you use the probe tool (arrow on the screen capture) and click (...) (21 years ago, 28-Nov-03, to lugnet.technic, lugnet.robotics)
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