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(...) We have worked with a big chart with black crosses on a white wooden surface. This works pretty well, since with the reflection of the light of the LED, black and white can be easily recognised. Then the ambient light has not a big influence. (...) (19 years ago, 8-Jun-05, to lugnet.robotics.rcx.legos)
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| | Re: position calculating for robots
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(...) There are various geometries have been implemented in Lego bricks for this. Here is one example: (URL) searching Google for "Lego adder subtractor" for others. (19 years ago, 2-Jun-05, to lugnet.robotics.rcx.legos)
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| | Re: position calculating for robots
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(...) From something I read 12 years ago for my university project (a Lego robot of course, but pre-RCX), I think it required differential equations (ugh!). Probably a bit too memory-hungry for an RCX. Perhaps you could use the PC's computing power (...) (19 years ago, 26-May-05, to lugnet.robotics.rcx.legos)
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| | position calculating for robots
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Thanks Thomas for your idea. The matter is that I was thinking of using angle sensors in order to calculate the number of the turns that each wheel has driven (I am talking for a robot with 2 wheels). I think that some advanced maths are required (...) (19 years ago, 26-May-05, to lugnet.robotics.rcx.legos)
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| | Re: navigation and communication
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(...) In theory you can find position by having a 'giant pantone chart' on the floor - a sheet of paper like the test pad with coloured squares on it, and use the light sensor to detect which square the robot is on. Has anyone tried this? It will be (...) (20 years ago, 25-May-05, to lugnet.robotics.rcx.legos)
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