 | | Re: Detecting tilt with an Accelerometer.
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Hi again, (...) Ok, i have just discussed this with someone having a ph.d. in physics and that's what he told me: Think of the segway as some big chimney you want to blast. These things break into two pieces while falling sideways. This is because (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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(...) Do you have some concrete reasons why it won't work, to go along with your assertion (for those of us just now joining the conversation)? I suspect that it could be made to work (in conjunction with other data like what the motor output is, (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Detecting tilt with an Accelerometer.
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(...) It might work, but imho not the obvious way. How it won't work: Measure the acceleration sideways. You would measure an acceleration if you were holding the whole setup at a certain angle, but since the whole sensor including the mechanic (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | RE: Detecting tilt with an Accelerometer.
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(...) Let me chime in and say "It won't work" Tilt detection is almost always done using a simple inclinometer. This is just a weighted pendulum on a potentiometer or shaft encoder. Now, that being said, could figure out that an object is rotating (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Detecting tilt with an Accelerometer.
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I've had discussions lately with a VERY large number of people about using an accelerometer to detect if an object (like a LegWay) is tilting. I'd like to continue the discussion here, with anyone willing to talk about it. Let me start by saying, (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Tower crane
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(URL) confess not looking closely at this when it was first publicised. It's amazing. (see also : (URL) ) There is mention at the end of the page of the use of an RCX but not much additional detail... John K. if you're on the list (or anyone else), (...) (23 years ago, 21-Oct-02, to lugnet.org.ca.nalug, lugnet.modelteam, lugnet.technic, lugnet.robotics.rcx)
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| | Re: Project WIRRL Update
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Replying to myself... I dismissed commercial solutions (proper radio modems) because they all looked too expensive. But I've found a beauty: (URL) RS232 @ 38.4Kb full duplex, 15Kbit rf, integral antenna, just under £30 (~$50) each for single units. (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Anyone for Chess?
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Andy: (...) Yep, many years ago I wanted a "new" chess board. It did what your RCX robot does. It was called Phantom Chess -- 6100 by Milton Bradly. Even then it was very expensive. (about $1200 CAN) a link is here: (URL) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: Project WIRRL Update
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I'm looking for an RF solution for PC-RCX communication as well, been thinking along very much the same lines as Rob seems to have so far, I too was pondering how to deal with TX/RX switching (though I've not got as far as building a circuit, and (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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| | Re: LEGO MindStroms 2.0: Alternative transmission techniques
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(...) Hi! Basically I think that for communication a Cybermaster would be better, but it lacks a bit of "programmability" as far as I know. And we also want to attach individual sensors and do more than just navigation. The IR to RFand RF to IR (...) (23 years ago, 21-Oct-02, to lugnet.robotics)
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