 | | RE: super cheap tilt sensor?
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I once tried to build a two wheeled robot (like a motorcycle) that would balance by steering (just like a bike) - but I never did get a tilt sensor that was fast enough to stop it toppling over without also generating wild overshoots and basically (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | RE: super cheap tilt sensor?
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For some reason, I didn't consider "centered" as a valid position... error on my part (big time). However, if the weight were spinning constantly, perhaps "center" and "tilt" could be determined... If the speed is constant over a full revolution, (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: super cheap tilt sensor?
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I had to copy and paste that into notepad to get it to display properly. I see what you mean now... though it is only useful when there is a tilt - it wouldn't be able to detect if something is centered. "Rob Limbaugh" <lego-robotics@crynwr.com> (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | RE: Designing a bipedal robot leg
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Here's a couple others: Bipedal "robot" that uses no electronics or rotating parts: (URL) 3D animated modeling of human walking (view can be adjusted to different angles): (URL) Message----- From: Andy Gombos [mailto:gombos_2000@...hlink.net] Sent: (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | RE: super cheap tilt sensor?
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What I attempted to describe was a single-sensor solution. Hopefully this ASCII drawings below will help clarify my thoughts... Viewed from above ---...--- ____ _ | |] | | | |] Wheel or --> | |=======O |] <--- rotation weight |_| |____|] sensor (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | super cheap tilt sensor?
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Luke (...) If you want super cheap, you could experiment making something like a mercury tilt switch but filled with salt water. The resistance will vary with how much of the electrodes are submerged. Peter (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: NQC "No reply from RCX" Help Please
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(...) Hum, says: nqc version 2.4 r3 (built Mar 24 2002, 16:32:33) Thought I had r2 for some reason, but it says same thing if I fully path it. (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: remote control
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(...) The others already explained what it does with the LEGO firmware, so I thought I just add how it works and what it can do with leJOS or legos. The remote sends a single kind of command called RemoteCommand that contains 16 bits, one for each (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: super cheap tilt sensor?
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(...) I was thinking about a two legged robot - but a motor-bike robot would be pretty amazing. I might try doing that myself. (...) apart (...) quickly - (...) much. (...) be (...) I'm not a lego purist though. What I do is break a 2x4 electric (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: super cheap tilt sensor?
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(...) Yes - that's right. (...) I once tried to build a two wheeled robot (like a motorcycle) that would balance by steering (just like a bike) - but I never did get a tilt sensor that was fast enough to stop it toppling over without also generating (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: super cheap tilt sensor?
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"Steve Baker" <lego-robotics@crynwr.com> wrote in message news:3CEAAE66.783CD4...ail.net... (...) rotations (...) Ok... I didn't have any rotation sensors - but now I've bought two from bricklink - that is probably cheaper and easier than buying (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: NQC "No reply from RCX" Help Please
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(...) Can you type "nqc" and check to see what version number it prints out? I've double-checked the source code, and it should say "Could not open serial port or USB device". Is it possible there are multiple versions of NQC and your command path (...) (23 years ago, 22-May-02, to lugnet.robotics)
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| | Re: super cheap tilt sensor?
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(...) It somewhat depends on how rapidly the tilt can change - and whether you intend to try to keep the robot level or just to know how much it's tilted by. For relatively slow rotation speeds, you can use a pendulum with a rotation sensor at the (...) (23 years ago, 21-May-02, to lugnet.robotics)
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| | RE: super cheap tilt sensor?
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Anybody remember scaleictric controllers? They had a copper coil to control the speed of the cars, as the trigger was pressed it would move the bar(in power) thru the coil and voltage would increase. This could be an easy and safe way! Rob (...) (23 years ago, 21-May-02, to lugnet.robotics)
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| | Re: Designing a bipedal robot leg
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(...) links (...) up. I used that in my beginning research on what has been done with Lego legs. :D I actually was going to it Friday, but Geocities was down all weekend. Saw it yesterday though. (...) (URL) built that leg over the weekend too, but (...) (23 years ago, 21-May-02, to lugnet.robotics)
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| | multi-robot communication
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Hi Robolab 2.5 friends, I posted an update to the recent page (URL) There was still a small bug in one file. But I also would like to announce that the original Robolab 2.5 Fill_remote_container.vi has a bad bug. In fact the transmission does not (...) (23 years ago, 21-May-02, to lugnet.robotics)
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| | LUGNET robotic FAQ?
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Hi all. Suz just sent me a request for an addition to the LUGNET FAQ, which I added here: (URL) in general, the 'Robotics' section of the FAQ is pretty sparse. Since there are so many resources out there listed on the robotics home page: (URL) well (...) (23 years ago, 21-May-02, to lugnet.robotics)
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| | Re: Designing a bipedal robot leg
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Hi Andy, 2 links for ya: (URL) - my collection of links to Lego Bipeds on the web. Although it seems many technicques have been tried succesfully, there are new ways coming out constantly. I try to keep up. For bipedal legs, try Leo's Lego: (URL) (23 years ago, 21-May-02, to lugnet.robotics)
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| | Re: Pneumatic Control
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(...) (23 years ago, 21-May-02, to lugnet.robotics)
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| | Announcing a pbForth emulator
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I started this project because I like pbForth, but having no previous experience about coding in Forth I felt the need of a comfortable environment where to test and debug my programs. I know that a good factored Forth code needs little if any (...) (23 years ago, 21-May-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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