 | | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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The second set of arms on Mike's robot gives it better mobility. They make its overall tread length much longer, so it can treat stairs like a ramp instead of, well, stairs, and that makes it faster at climbing them. The arms also let it raise the (...) (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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(...) Ha! Methinks you underestimate the talents (not to mention obsession) of the other folks in this event <grin>. Seriously, thanks for the kind words, and I'm very happy with it, but now the rest of you know yet another way to try to do it. Go (...) (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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(...) well, in all honesty I shamelessly implemented a solution I had already known about: PackBot by iRobot. I won't remotely claim the idea originated with me, as it didn't. I was inspired by the "real world" here. That said, I'd not run across (...) (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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(...) Thank you both Matthias & Philo (and others!). give them an inch indeed... first, I really feel i need to apologize for *not* CADing this up. I've tried to CAD stuff, but the combination of my chosen platform (Mac) coupled with where I like (...) (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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Brian, your rock crawler is quite interesting to me because you've rediscovered the design of a real-world reconnaissance robot: (URL) designer is related to my boss in some manner that I can't recall, but he was up at our office last summer showing (...) (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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(...) go nuts when they see the video! (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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(...) Same comments and feelings here ;o) Brian, it would help to reproduce your outstanding design (and maybe CAD it!) if you could provide higher resolutions photographs somewhere... Philo (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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Brian, (...) Absolutely awesome! /Matthias (deeply impressed) ps Now I'm going to wait day and night for the LDraw file ;-) (give them an inch and they will take a mile...) (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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(...) OK, I hammered on it some more, and made a much more fun video. I updated Brickshelf with some "deconstruction" pictures that show how to build it (hey, I didn't say they made it *easy* to build it): (URL) the video on YouTube, with my son (...) (18 years ago, 29-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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| | Re: Help with balancing cantelevered WIP project.
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"Aaron Sneary" <aaronsneary@NOSPAMyahoo.com> skrev i en meddelelse news:JCJGqJ.2EJ@lugnet.com... (...) Have you been building to an exact scale with measures? It seems to me that your overhanging arm is longer (relative to the height of the (...) (18 years ago, 28-Jan-07, to lugnet.build, lugnet.technic)
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| | Re: Help with balancing cantelevered WIP project.
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(...) Hi Aaron, From memory, the boat weights are only about 20 grams each. That's less than 1 oz. So you'd need quite a few. I have used fishing sinkers for counterweight before - you could fit quite a few inside that control room or whatever it is (...) (18 years ago, 27-Jan-07, to lugnet.build, lugnet.technic, FTX)
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| | Re: Help with balancing cantelevered WIP project.
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"Aaron Sneary" <aaronsneary@NOSPAMyahoo.com> wrote in message news:JCJGqJ.2EJ@lugnet.com... (...) There are two main things and several minor things you need to keep in mind here. 1. The arm piece extending out of the tower can only extend so far (...) (18 years ago, 27-Jan-07, to lugnet.build, lugnet.technic)
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| | WIP - Red Quad
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I have been working on this Red Quad. Contains the NXT. Work in Progress. (URL) (18 years ago, 27-Jan-07, to lugnet.build.mecha, lugnet.technic, lugnet.robotics.nxt, FTX) !
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| | Help with balancing cantelevered WIP project.
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I would love some suggestions on keeping this WIP project from tipping over: (2 URLs) The tower stays together, with a technic beam running up the back side. But the whole baseplate flexs and tips over with the weight of the overhanging arm. And (...) (18 years ago, 27-Jan-07, to lugnet.build, lugnet.technic, FTX)
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| | Re: Mindstorms question
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Hi Nathan, (...) the RCX rotation sensor should work on sensor ports like all legacy sensors, provided it is supported by the firmware. It would also be possible to build a rotation sensor for the motor ports, i.e. like a NXT motor without the motor (...) (18 years ago, 27-Jan-07, to lugnet.technic)
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| | Re: Mindstorms question
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(...) The NXT motors have built-in rotation sensors, so you could detect a stall condition with no other hardware. You could use the ultra-sonic (distance sensor) or light sensor to detect when the blade passes in front of it, to determine when the (...) (18 years ago, 26-Jan-07, to lugnet.technic)
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| | Re: Mindstorms question
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(...) Thanks Steve for the information and the advice. Although gearing up the NXT motors may result in a loss of torque, it sounds like a good option. Another option might be to control the switch for the RC motor with one of the NXT motors (which (...) (18 years ago, 26-Jan-07, to lugnet.technic)
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| | Re: Mindstorms question
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(...) Nathan, Yes, there are ways to do just about everything you asked. I don't think the RC motors will run at full power when connected to an NXT (which can be done via conversion cables) Personally, I'd suggest gearing up one or more NXT motors, (...) (18 years ago, 24-Jan-07, to lugnet.technic)
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| | Mindstorms question
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I bought the Mindstorms NXT kit at BrickFest 2006 in hopes of designing a Lego chipper. Although the sensors would make the design possible, the blade of a chipper has to turn at an extremely high RPM- and with a lot of torque. The NXT motors turn (...) (18 years ago, 24-Jan-07, to lugnet.technic)
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| | Re: Unit LNE of the dinochrome brigade (Was: Rock Crawling)
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(...) Awesome! Great videos! BTW if you want to know how to make bigger tires, try inserting old school 1" Lego tires into the crevices around the large grey "hula hoops" from the star wars kit. This will make tires at least 8" (20 cm) in diameter (...) (18 years ago, 24-Jan-07, to lugnet.org.us.laflrc, lugnet.robotics, lugnet.technic)
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