Subject:
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RE: robotic rovers
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 26 Aug 1999 13:59:12 GMT
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Original-From:
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Steve Hassenplug <SteveH@mailcode.com>
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Viewed:
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643 times
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Ian Warfield wrote:
> Incidentally, has anyone tried to combine a rotation sensor and a
touch sensor
> on the same input? I've tried programming a sensor task routine
to separate
> the input signals based on RAW voltage but it's not fast enough to
handle
> normal movement :(. With two rotation sensors taking up two
inputs, I'm not
> looking forward to sharing input 3 with two touch sensors and a
light sensor.
Have you tried combining the inputs of the two output motors into a
differential? If the inputs are counter-rotating, the net
differential
body rotation will tell you which side is moving faster, ie:
Motor A ------> Differential <--(Reversed Input) Motor B
+
+-----Rotationn Sensor (hooked up to the Diff
body)
I was working with this same idea yesterday, but the problem is this will
not give you correct information when you are turning. Does anyone have a
suggestion about how to do that?
I want to use two motors to drive (max speed), two rotation sensors, to
adjust speed/direction, and also have two touch/bump sensors to avoid
things.
Make sure Motor A and Motor B are input to the Differential via the
same
gear reduction. If the Rotation Sensor hooked up to the
differential is
reading zero then both are moving at the same rate. If there is a
change, slow or float one side to let the other catch up.
I have also figured that if you connect the two motors to each other
(as
well as to their respective outputs), you should lock in their
movements
together. Perhaps you could run this thru a interrupter switch to
shut
off this connection while turning.
Well, I was with you up to this point... I don't understand exactly what
you're suggesting here.
Thanks
Steve
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Re: robotic rovers
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| Steve, I think your post was meant to read like this: (...) I was working with this same idea yesterday, but the problem is this will not give you correct information when you are turning. Does anyone have a suggestion about how to do that? I want (...) (25 years ago, 30-Aug-99, to lugnet.robotics)
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