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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Tue, 6 Jun 2006 22:58:42 GMT
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Original-From:
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steve <sjbaker1@STOPSPAMMERSairmail.net>
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Viewed:
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3797 times
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Mr S wrote:
> I might be wrong, but my understanding of the Lego differential gearing
> is that if both shafts are turning at the same rate and direction, the outer
> gear/shell will turn at the same rate as the axles. Only when the two shafts
> are turning in opposite directions at equal rates will the outer gear stand still.
I think you need another pair of gears on one of the wheels to reverse
its direction.
If you are going to use a rotation sensor to measure the slippage then
you need to realise that the sensor is notoriously poor at very low
speeds. You'll at least want to gear up the difference output shaft
in order to make your slippage sensor more sensitive.
Personally, I'd still use a light sensor since you only really care that
you're slipping - not by how much.
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Newbie needs Help (diff sensor)
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| Some varied thoughts here: (...) I might be wrong, but my understanding of the Lego differential gearing is that if both shafts are turning at the same rate and direction, the outer gear/shell will turn at the same rate as the axles. Only when the (...) (18 years ago, 6-Jun-06, to lugnet.robotics)
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