 | | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) Symmetry is when something 'balances', it's a kind of equilibrium. Let's look at a six legged walker for a moment and see what sort of symmetry it has. First off we have six legs and many of them (at least three in the right location) must (...) (22 years ago, 3-Dec-03, to lugnet.robotics)
|
| |
| | Strange BrickOS Timing
|
|
Hello out there, maybe someone can explain to me why the current brickOS release seems to have msleep()-amnesia ;-) We've been testing the data transfer to our Lepomux device. For some strange reason we were still using kernel 0.2.6.07nmChg with a (...) (22 years ago, 2-Dec-03, to lugnet.robotics.rcx.legos)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) hard. (...) About 15 years ago - in the days before RCX - I built a 6-legged walker that used "ackerman" steering on the front legs. Power to the front legs went through the kingpins. (I think "kingpin" is called something different in US (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
|
| |
| | Re: GP2D12 Please help
|
|
Hi Sebastian, (...) I don't know the schematics of that sensor interface, but I think it's basically a bad idea to drive a device that needs 30 to 50 mA from a powersource that can only output about 10 mA. I've experienced similar effects while (...) (22 years ago, 2-Dec-03, to lugnet.robotics.rcx.legos)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) Done. -- -- Open Forge, LLC 24/365 Onsite Support for PCs, Networks, & Game Consoles 512-695-4126 (Austin, Tx.) help@open-forge.com irc.open-forge.com Hangar 18 Open Source Distributed Computing Using Plan 9 & Linux 512-451-7087 (URL) (...) (22 years ago, 2-Dec-03, to lugnet.robotics)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) Please do. Thanks, Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) Please do. Thanks, Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) 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)
|
| |
| | Re: NQC's future
|
|
(...) 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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) 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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) 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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been donebefore/etc?
|
|
(...) Doug Carlson has working examples: (URL) (...) I understand it. (...) Kevin (22 years ago, 2-Dec-03, to lugnet.robotics)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) 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)
|
| |
| | RE: an idea, can someone tell me if this is possible/been donebefore/etc?
|
|
<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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) 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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) 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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
(...) 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)
|
| |
| | Re: Broken Mindstorms motors
|
|
(...) 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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
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)
|
| |
| | Re: an idea, can someone tell me if this is possible/been done before/etc?
|
|
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)
|
