Robotics : 6749


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Subject:	Re: The Scout brick: smart or dumb? (was: Robotics Discovery Set)
Newsgroups:	lugnet.robotics
Date:	Tue, 7 Sep 1999 20:11:23 GMT
Viewed:	703 times

In lugnet.robotics, Robert Eddings writes: > [...] The "3000 different behaviors" is a bit misleading. The Scout > has four preset actions each for motion, touch, and light (listed > below). The different combinations of theses is what they mean by > behaviors. > > -MOTION- | -TOUCH- | -LIGHT- > forward | reverse | seek [presumably "forward" = "straight" -ed] > zigzag | avoid | avoid > circle | waitfor | waitfor > loop | brake | brake I appreciate the description, but I'm having trouble figuring out how it could possibly (even in the altered reality of marketing) come out to 3000. Based on your description, it appears that the Scout user selects one of four types of motion, and then selects one of four actions to take on a touch event, and then selects one of four actions to take on a light event. That works out to 4 x 4 x 4 = 64 combinations. To get to 3000, there has to be an additional factor of about 50. Even if we factor in another 4 to allow the second touch sensor to behave differently than the first (which seems likely) there is still a factor of 12 left over. What am I missing? > [...] The Scout documentation says that the RCX can send a number > value between 1-12 to the Scout via IR. It is not said what this > does but I can assume this controls the 12 preset actions. I will > have to test this to find out. Which 12 actions could that be? There are only 5 stimulus-response reactions in your list: reverse seek avoid waitfor brake or 9 if you add the four types of movement (straight, zigzag, circle, loop). It appears that you're counting some of them twice and doing 4 + 4 + 4 = 12. - Robert Munafo http://www.mrob.com/ LEGO: TC+++(8480) SW++ #+ S-- LS++ Hsp M+ A@ LM++ YB64m IC13

Message has 2 Replies:

		Re: The Scout brick: smart or dumb? (was: Robotics Discovery Set)
(...) (This is a reply to the orphan message (URL) point was, that his description did not specify what was missing. He said nothing about "program steps" and imagining such steps gets us no closer to the truth. Here is Robert's text again so you (...) (25 years ago, 7-Sep-99, to lugnet.robotics)

		Re: The Scout brick: smart or dumb? (was: Robotics Discovery Set)
(...) The error is in my depth of description. My aim was to provide interesting general information instead of (perhaps) boring or confusing details. So to clarify: There are four MOTION actions but the "circle" command can be set to clockwise or (...) (25 years ago, 7-Sep-99, to lugnet.robotics)

Message is in Reply To:

		Re: The Scout brick: smart or dumb? (was: Robotics Discovery Set)
(...) Of course there is no doubt that the RCX is far more versatile than the Scout but it still has it's advantages. Sometimes I just want to build a robot that rolls around, avoids objects when a touch sensor is hit, and makes funny little noises. (...) (25 years ago, 7-Sep-99, to lugnet.robotics)

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