 | | 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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| | Re: any idea if radar can be used with the rcx?
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(...) The RCX doesn't support radar, but the Handy Board with Expansion Board supports the Polaroid Sonar unit... here is a thread on a recent discussion here on it... (URL) Handy Board is essentially the RCX+++, but it does not come in a Lego (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: Another DIY sensor
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Umm. (...) No I didn't! My laptop has a glide point thingy so I don't have box full of dead mice! . But I should investigate! Thanks for the idea. (...) That reminds me. A while ago now, someone here suggested trying out the guts of one of those (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: The Giant Wheelbot (aka 'sphere rat')
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(...) Who was it that built the 'sewer rat' ( a robot that fitted in a pipe, with 4 sets of wheels contacting the walls of the pipe)? It shouldn't be insanely hard to modify into a 'sphere rat'! Did the original sewer rat use synchro drives or fixed (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: The Giant Wheelbot
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(...) Who was it that built the 'sewer rat' ( a robot that fitted in a pipe, with 4 sets of wheels contacting the walls of the pipe)? It shouldn't be insanely hard to modify into a 'sphere rat'! Did the original sewer rat use synchro drives or fixed (...) (25 years ago, 16-Nov-00, to lugnet.robotics)
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| | Re: The Giant Wheelbot
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(...) Stick it in one of those "hamster balls". They make bigger ones for rats and ferrets. --- J Austin David austindavid.com austin@gtf.org Life is hard. It's harder if you use NT. (25 years ago, 16-Nov-00, to lugnet.robotics)
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