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 | | LEGO parts -- genuine?
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| I have what y’all might consider stupid questions on the identification of some parts. But please consider that I’ve only played casually with LEGOs as an adult, never as a child, and have only the last several months been really learning the ins (...) (23 years ago, 21-Jul-02, to lugnet.robotics)
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vision
(score: 0.329)
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| | Problem in Battery Power
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| Hi ! I am a research student in Robotic. I am using Handy Board together with Expansion Board to interface with DC motors and other sensory devices. Unfortunately, internal power supply is not adequate for powering my motors. So, I am thinking to (...) (24 years ago, 14-Aug-01, to lugnet.robotics.handyboard)
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robotic
(score: 0.329)
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| | Re: optical mouse chips as vision sensors?
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| (...) Yes - mathematically, you could still do it with the mouse sensor off to the side of the robot (but not with it dead center between the wheels) - however the sensitivity of the chip to small lateral movements probably wouldn't be enough to (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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vision
(score: 0.329)
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| | Re: optical mouse chips as vision sensors?
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| (...) The mouse's camera chip tells you how fast the beast is moving forwards/backwards and how fast left/right - as two separate sets of numbers. If you mounted it on a boom (say) six inches ahead of the wheels of a typical two-wheel-plus-caster (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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vision
(score: 0.329)
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| | Re: optical mouse chips as vision sensors?
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| Nevermind... I was assuming it would be mounted to the left or right of center (thus the rotation would still show up as forward or reverse). After thinking about it a moment, it occurs to me that by mounting the sensor in front of or behind the (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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vision
(score: 0.329)
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| | Re: optical mouse chips as vision sensors?
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| (...) Hmmm... I don't see how that would work. How would a single sensor be able to differentiate between rotational movement and straight forward & back movement? I suppose you would be able to guess since you would know what state the robot was in (...) (23 years ago, 9-Jul-02, to lugnet.robotics)
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vision
(score: 0.329)
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vision
(score: 0.328)
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| | Re: optical mouse chips as vision sensors?
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| (...) Right - you only get translational motion - not rotation. However, you could use two of these contraptions - on on each side of the robot (or one on the front and the other on the back) and thus derive the rotational speed from the difference (...) (23 years ago, 8-Jul-02, to lugnet.robotics)
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vision
(score: 0.328)
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vision
(score: 0.328)
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| | RE: optical mouse chips as vision sensors?
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| (...) We're checking into buying the parts from Agilent and making a plug on sensor for JCX -- which will finally ship late this summer. I wonder about using a white LED and RGB filters on three sensors, then you'd get color information too. Useful (...) (23 years ago, 2-Jul-02, to lugnet.robotics)
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vision
(score: 0.328)
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| | RE: optical mouse chips as vision sensors?
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| Since the optical mouse is a miniature camera, the same type of principal could be applied using the Lego Camera, maybe even with a custom template in VC. This would at least be an "all lego" solution (for the purists out there). The focal point (...) (23 years ago, 1-Jul-02, to lugnet.robotics)
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vision
(score: 0.328)
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| | RE: optical mouse chips as vision sensors?
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| One other interesting thing about this idea-- If it works, not only will you get the optical sensor, but you can probably get up to 5 touch sensors and a rotation sensor at the same time. I'm not sure how the signal is sent, but will the RCX be able (...) (23 years ago, 1-Jul-02, to lugnet.robotics)
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vision
(score: 0.328)
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| | RE: optical mouse chips as vision sensors?
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| (...) No, pbForth can easily read arbitrary chars coming in on the IR prot, we'd just need to switch the RCX to 1200 baud... (...) John, If you send me a modified mouse, I'll do the other Forth stuff needed to get this working in a weekend. Cheers, (...) (23 years ago, 1-Jul-02, to lugnet.robotics)
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vision
(score: 0.327)
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| | Re: optical mouse chips as vision sensors?
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| This whole thread just caused an interesting thought to pop into my head, although I suspect it would only apply to cases where LegOS were being used. If the mouse serial port output (transmit line) were to be connected to a LMC555 (running at (...) (23 years ago, 1-Jul-02, to lugnet.robotics)
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vision
(score: 0.327)
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| | optical mouse chips as vision sensors?
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| (URL) makes the optical mice components and has shipped over 12 million. The link above has some explanation of how they work. It's an interesting idea to see if these could be adapted for robotics. Bruce (23 years ago, 29-Jun-02, to lugnet.robotics)
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vision
(score: 0.327)
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vision
(score: 0.327)
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| | RE: optical mouse chips as vision sensors?
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| And then check out the language he used to hack into the mouse data stream....yep it's FORTH. Not surprising as New Micros Inc was one of the first vendors of single board computers with Forth as the control language... Cheers, Ralph (...) (23 years ago, 30-Jun-02, to lugnet.robotics)
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vision
(score: 0.327)
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vision
(score: 0.327)
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| | RE: kits on sale - Toronto area
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| Laura, I picked up two rotation sensors and the Vision COmmand as well as a few other kits - just in case. I really wish you would keep this kind of bargain hunting to yourself :-) Cheers, Ralph (23 years ago, 30-Jun-02, to lugnet.robotics)
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vision
(score: 0.327)
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| | 3800 Ultimate Builders Set
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| Has anybody received this set yet? I've been trying to find out what is in it, but all that the S@H site really seems to have is a long section on the system requirements! Can anyone tell me: 1. What main parts/features are included? - new/rare (...) (24 years ago, 31-Jul-01, to lugnet.robotics, lugnet.technic)
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robotic
(score: 0.327)
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