 | | Re: Light sensor initialization?
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Matthew's program takes one reading at initialization time to determine a baseline value. Any reading that falls 7 units below this is assumed to be a dark line. I take a somewhat more conservative approach, taking 10 readings over one second and (...) (27 years ago, 15-Jul-99, to lugnet.robotics.rcx)
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| | Re: Light sensor initialization?
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(...) [snip] (...) Yes -- check out my RoboTag program at (URL) RoboTag, the sensor is pointing at the ground, which is probably grey/brown/white, with black border lines. My program reads the light level at start, and assumes that it isn't on a (...) (27 years ago, 14-Jul-99, to lugnet.robotics.rcx)
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| | Re: Light sensor initialization?
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I haven't done that yet. But if you're doing a line follower, I would suggest the following: 1. First, build the line follower in such a way that it can rotate in place and make the light sensor sweep out a circle on the ground as it rotates. 2. (...) (27 years ago, 13-Jul-99, to lugnet.robotics.rcx)
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| | Lots of new FAQ answers and some revisions
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I have just sumbitted a large number of answers to FAQ questions that hadn't been answered yet, and revisions to other answers. There is also just one answer that I did not change (-: The answers are in the lugnet.faq newsgroup. Here is an index to (...) (27 years ago, 13-Jul-99, to lugnet.robotics.rcx, lugnet.faq)
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| | Light sensor initialization?
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This should be an FAQ at this point, but I'm having trouble tracking down an answer in the LUGNET archives. I'd like my 'bot to measure ambient light levels, and make light/gray/dark decisions based on those levels. For instance, Dave Baum's line (...) (27 years ago, 13-Jul-99, to lugnet.robotics.rcx)
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| | Re: Help with 9738 LEGO Mindstorms Remote Control
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(...) Robolab uses the same firmware as Mindstorms RIS, so the remote should work fine. Same goes for NQC. (...) You can write programs in NQC (also in RCX Code or Robolab) that respond to IR Messages. These messages can be sent from another RCX, (...) (27 years ago, 13-Jul-99, to lugnet.robotics.rcx)
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| | Re: Help with 9738 LEGO Mindstorms Remote Control
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Dave's reply is right on the mark, but I also want to point out that if you have downloaded a non-MindStorms O.S. to the RCX (i.e. any firmware other than the standard LEGO MindStorms firmware) the remote might not work either. I haven't tried any (...) (27 years ago, 12-Jul-99, to lugnet.robotics.rcx)
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| | RE: VERY [OT] Feathers 'n Lead...
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(...) Sorry for the extra quoting here, but the thread was a bit old...and just for everyone's info, both bags have the SAME mass, so they have the same first moment of inertia....I think. The shape of the object generally affects the SECOND momemnt (...) (27 years ago, 12-Jul-99, to lugnet.robotics.rcx)
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| | Re: VERY [OT] Feathers 'n Lead...
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(...) I think the original poster was putting his tongue firmly in cheek there. BTW, the dropping of objects would be a second experimental proof that gravity affects all objects equally regardless of weight. Best test being in a vacuum where you (...) (27 years ago, 12-Jul-99, to lugnet.robotics.rcx)
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| | Re: [OT] Feathers 'n Lead...
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(...) being (...) as (...) MORE (...) the dropping of the objects on the moon was to prove that when 2 objects are dropped from the same height in an environment with little or no friction they will hit the ground at the same time. both bags weigh (...) (27 years ago, 12-Jul-99, to lugnet.robotics.rcx)
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