Subject:
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Re: Newbie needs Help (diff sensor)
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 7 Jun 2006 18:04:33 GMT
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Viewed:
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4423 times
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In lugnet.robotics, Steve Hassenplug wrote:
> > I've always wanted to use the RCX and a sensor to
> > do this [measure the kinetic coefficient of friction]
> > automaticly...
>
> hmm. This sounds like a good project...
I'll get to that, eventually... there's just too much fun stuff going on,
and...
> All things being equal, I'd put my money on the robot
> with ten spinning wheels, over a couple (or even ten)
> stationary ones.
A historical point on this. The first time I met Steve was at a sumo event,
where I had carefully calculated the correct gear ratio, given the torque of a
motor, and the weight of the robot, and where to put the drive wheels. It was
even for this that I had initially measured the coefficient of static friction.
Steve showed up with a battery-box driven robot that used some unbelievable
number of small wheels, and promptly trashed my "perfected" robot.
Moral: figure all you want. Calculate, measure, and plot. Then TEST.
Testtesttesttest. And when that's done, test some more, in new ways. And when
you're polished robot has passed all those tests with flying colors... give it
to a five-year-old who will likely point out the blind spot you missed in 30
seconds.
> Testing is important.
I think I'd have to agree :-).
--
Brian Davis
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Message is in Reply To:
 | | Re: Newbie needs Help (diff sensor)
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| (...) hmm. This sounds like a good project... (...) All things being equal, I'd put my money on the robot with ten spinning wheels, over a couple (or even ten) stationary ones. I'd also mechanically connect all the motors together, so they drive a (...) (18 years ago, 7-Jun-06, to lugnet.robotics)
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