 | | Re: Another DIY sensor
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(...) Those cameras have a small, low-resolution CCD in them, and they take snapshots of the mousing surface and compare them to detect the quantity of motion. If you were going to use one of those mice your best bet would be to put together a (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: Another DIY sensor
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(...) Did you consider buying a $5 computer mouse and gutting it? That will give you not one but TWO slotted disks and TWO dual optical detectors. It's hard to imagine another solution for $2.50 per sensor! IIRC, most cheap mice are ~200 clicks per (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: Another DIY sensor
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The optical mice are still $50. I bought one and ended up taking it back, didn't work so well. But it definitely looked cool. Would probably make a good sensor though I don't know what kind of values it sends out... (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: Another DIY sensor
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(...) How about (URL) you filter out the marketing-speak it would appear that the optical sensor is a combination digital camera and signal processor. Dunno what the chances are of getting any sort of intelligle output other than +/- x and y is. (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | A technic elevator
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I have updated my Lego page with my new own creation : a Lego elevator. (URL) Klein A Mindstorms fan. (25 years ago, 17-Nov-00, to lugnet.robotics, lugnet.technic)
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| | Re: Clarification of access control
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(...) I forgot to show that resources get released, the functionality is more like this: try { grabResource(X); ...body... releaseResource(X); } catch (ResourceLostException e) { } Dave (25 years ago, 17-Nov-00, to lugnet.robotics)
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| | Re: Another DIY sensor
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Does the ratio of the disk track diameter and the seperation between the interuptors allow you get 90 degrees (optical) seperation ? IE could you get quadrature off of it ? BTW, Please post pictures : ) Thanks, -JSM (25 years ago, 17-Nov-00, to lugnet.robotics)
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| | BrickBots.Com is launched - New Robotics Contest with Prize
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I have received so much good information by lurking in the LUGNET community, I am finally giving something back. I am pleased to announce both the launch of BrickBots.Com ( (URL) ) and the start of our first contest, the Aluminum Can Stacking (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: any idea if radar can be used with the rcx?
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You can get pretty good proximity detection using the built in IR port to send (arbitrary) messages out and simultaneously sampling with the stock light sensor to pick up IR returns. Proximity detection out to about 10 inches is possible. Search the (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: Clarification of access control
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If a task loses its resources (due to an equal or higher priority task acquiring them), then control leaves the body of the acquire statement. If there is a "catch" block following the acquire, then the catch block is executed, otherwise control (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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