 | | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Please do. Thanks, Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Please do. Thanks, Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) I agree. (...) Sorry, I made -no- statement about your Qaud242. Build it however you like. You expanded the scope of my comment from general legged walker design to something specific, where it wasn't intended to go. I was talking strictly (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: NQC's future
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(...) I am happy to help out as best I can. Unfortunately, there is little chance that I will do as good a job as Dave Baum has done over the years. But I'll try my best. (...) Yes. When I can find the time. I'm also trying to find the time to do a (...) (22 years ago, 2-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) I've never been lost, I always know where I'm at if I'm awake. Right here. May not know where other things are in relation but, hey, the sun rises in the E. and sets in the W. everywhere; and I know how to read stars. :) (...) I'm often lost, (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) I guess we're talking different things here. You were telling me to use all three motor/sensors. I claim I only need two for my Quad242. I have to see WWW to know what you are talking about I guess, or else you lost me. Static balance requires (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been donebefore/etc?
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(...) Doug Carlson has working examples: (URL) (...) I understand it. (...) Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Well I was restricting the discussion to modifying my Quad242. I think you are talking about something else. I think you were proposing using all three inputs and outputs to run the motors and control switches. I was proposing using less of (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | RE: an idea, can someone tell me if this is possible/been donebefore/etc?
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<SNIP> (...) Look up Tri-Star Wheel. Instead of driving wheels, drive gears that move legs (or pneumatic pumps). Remember that a Tri-Star Wheel uses a differential. When the input shaft is turned, it spins the body of the differential which turns (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Bad assumption but it would work, the RCX is too limited on I/O to be doing that sort of stuff except in the case of simple rollers/walker. Since legs have symmetry it's silly not to take advantage of it here, you've got to use it to keep the (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Nope, it's actually pretty easy. Sel-Syn. It's been used on naval ships to control guns since sometime in the mid-1800's. -- -- Open Forge, LLC 24/365 Onsite Support for PCs, Networks, & Game Consoles 512-695-4126 (Austin, Tx.) (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) A man after my own heart ;) It seems to be the way nature works too, start simple only add complexity when a energy capture issue arises and forces an adaptive response. Most adaptions are neutral, despite the dribble they teach all the way up (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: Broken Mindstorms motors
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(...) Call "LEGO Shop at Home" and get four replacement motors. I just called them about a broken motor and a broken "pneumatic double acting cylinder". I called them pistons, but when she finally found them in 8455, she made sure I knew they were (...) (22 years ago, 2-Dec-03, to lugnet.robotics.rcx)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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That's "scene analysis", not "seen analysis". I knew I had a typo like that, but could not find it. ----- Original Message ----- From: "Gordon Elliott" <gelliott@csisc.cc> To: <lego-robotics@crynwr.com> Sent: Tuesday, December 02, 2003 2:21 PM (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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Earlier, Jim Choate said: (...) I think it is important to understand both simplicity and complexity here. For example a fluidic (e.g. pneumatic) cylinders have the potential for redistribution between cylinders of load force. This is equivalent to (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) When driving I'm sometimes not where I want to be but am rarely lost. When lost I have no problem asking directions :^) When it comes time to make complicated robots out of LEGO I'm often lost and don't like to ask directions! I know this post (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) What if we assume that each output drives a motor, through a differential which drives a pneumatic switch and a compressor. The compressor does not care which rotational direction it is driven, but the switch does. When we are mostly up to (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) I gotta see the movie to really appreciate what you'd like to see. (...) The foot on the obstacle is not in the air but on the ground. If you mean that one foot is on the obstacle and the other can't reach the ground, I see your point. I was (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) One of my design goals when making robots is to not use the RCX unless it is needed. I program computers and debug hardware all day at work, so I can write NQC programs in my sleep. For me it is much more of a challenge (and therefore more (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: Search algorithms
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(...) A* works just fine under legOS. I haven't tried it in NQC, where I'd expect to have some minor issues with the list management. - Alex (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: NQC's future
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In lugnet.robotics.rcx.nqc, John Hansen wrote: John, thanks for taking on the maintenance and improvement of NQC. (...) I'd definitely like to see this one implemented, when you can find the time. :-) Mark (22 years ago, 2-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | NQC's future
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I'm very interested in hearing from NQC users what their needs/wishes are for future enhancements. Here's my current list of updates/enhancements that I am working on. 1. Built-in and documented Spybot API. 2. Fast firmware download via USB tower (...) (22 years ago, 2-Dec-03, to lugnet.robotics.rcx.nqc, lugnet.robotics.spybotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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On "complexity", I would point out that the computational power of the neural pathways of the house fly thoroughly exceeds the computational throughput of our most massive supercomputer clusters at the moment. True "adaptation" would require (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Just checked, yep. Not counting this one I sent three responses to -your- request for input on your project. -ALL- of them went to the list. Me thinks he protest too much. -- -- Open Forge, LLC 24/365 Onsite Support for PCs, Networks, & Game (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Nothing, you asked a question and I explained the situation. (...) I have no interest in your mental state. (...) I've actually sent you nothing I didn't CC to the group as far as I'm aware. (...) -technical- toys. (...) You asked a question, (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Broken Mindstorms motors
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We have several broken mindstorms motors. Tw got the shafts broken. Two just stopped turning. So, we decided to steal the shafts from one set to fix the other set. However, putting them back together has stopped the working but shaftless ones from (...) (22 years ago, 2-Dec-03, to lugnet.robotics.rcx)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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i'm sorry to all about using this forum to resolve private issues but i have to say one word to jim what is going on with you? if you want to get me down - do it here on the group!!! send you really smart and wise posts on the group!!! if you want (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Use a watchdog timer instead, if you want to stop don't send any outputs. Once the timer trips the bot stops. You still get your third sensor, you'll need it for a bump switch, otherwise you won't know when to turn/back-up. Each output is (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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"Kevin L. Clague" <kevin_clague@yahoo.com> wrote in message news:Hp9qnp.Cn6@lugnet.com... (...) i know what you mean but i thought about walking through obstacles in fact walking over obstacles because we were talking about WWW and the spider from (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Ahh, yes. Not walking is an important part of the behavior :^) I'll probably have the third output control a pole reversor switch. Battery power -> pole reversor -> RC racer motor (or two?) -> pumps. I want a powerful compressor. (...) Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) That's not what I meant! Silly fingers. I can't suggest Ilya's book strongly enough. This guy 'got it'. -- -- Open Forge, LLC 24/365 Onsite Support for PCs, Networks, & Game Consoles 512-695-4126 (Austin, Tx.) help@open-forge.com (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Much lighter than 1 RCX per leg !!! (...) I guess the third output should control the Walk/Don't Walk function, perhaps directly driving compressor motor? Philo (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) My Quad242 has the ability to walk forward and backward, as well as turn right or left. Currently pneumatic switches, acting as pneumatic polarity reversors, need to be manually flipped to change from behavior to behavior. These behavior (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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"Kevin L. Clague" <kevin_clague@yahoo.com> wrote in message news:Hp8uqD.8yM@lugnet.com... (...) but pneumatics gives you just automation you dont have "adaptation" i can imagine sensor-like pneumatic valve configuration but it would be much more (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Search algorithms
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Has anyone tried A* or D* on an RCX Lester Witter (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: Robotex2003 Winner: Lego
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I found some picture from the event. It has been really hard to find any information at all. All pictures: (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) I'd recommend pneumatics instead of large number of RCX's. Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) Yes (...) Not really, if you start with a hexapod and break the legs down into two groups of three (you get stability that way) you should be able to do it with two outputs (one for start/stop the other for for/rev). As an aside, and a rather (...) (22 years ago, 1-Dec-03, to lugnet.robotics)
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| | Re: an idea, can someone tell me if this is possible/been done before/etc?
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(...) That's one approach, probably the wrong one considering the limitations of the RCX. Instead of trying to solve your problems with the RCX why not take the approach of the original; pullies, gears, differentials, gear trains, etc. As I made (...) (22 years ago, 1-Dec-03, to lugnet.robotics)
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| | Re: failure in communicaton between RCX & IR Tower
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Nathan, I have done this trouble shooting step, ie. changing the timing. Unfortunately, it did not work. But, thank you though. Well, the a W2Kpro virtual machine approach did not work either... I guess my only alternative will be getting the (...) (22 years ago, 1-Dec-03, to lugnet.robotics.rcx.robolab)
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