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In lugnet.org.ca.rtltoronto, Calum Tsang wrote:
> In lugnet.org.ca.rtltoronto, Rob Antonishen wrote:
> > Well, it looks like in the 11th hour I'm going to have to abandon my
> > differential drive for Project Y....there is WAY too much play in the
> > differential gear train, which makes tracking the light with the whole
> > bot virtually impossible...
>
> Can I ask a stupid question from a non-moving bot owner? Why do you need that
> much precision? The light readings are going to be pretty variable, and the
> robot targets and obstacles are all moving, so do you really need that much
> precision to know the general direction you need to be going in?
>
> Calum
This is the main reason I went with two light sensors--knowing that there'll be
moving 'bots and such, I wanted to 'home in' using the best and easiest possible
way. using the two ight sensors as a differential, you can steer right towards
any light, even if it is moving.
At least, that's the plan.
Didn't work so much the last time I tested it.
It's going to be a late night...
As for the accuracy--if you have a rotation sensor so you can scan for the
greatest light source, you want to be able to get back to that point accurately
when the 'bot's done scanning.
That's what I thnk Chris and Rob are doing--the robot does a sweep, and logs the
rotation value for the highest light value. When the 'bots finished it's
'sensor sweep', it's got to turn back to that rotation value--it shoudl be
accurate or it's not very good...
Dave K
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Message is in Reply To:
 | | Re: Gear lash....
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| (...) Can I ask a stupid question from a non-moving bot owner? Why do you need that much precision? The light readings are going to be pretty variable, and the robot targets and obstacles are all moving, so do you really need that much precision to (...) (19 years ago, 2-Mar-06, to lugnet.org.ca.rtltoronto)
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