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 08:10:52 GMT
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Reply-To:
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nospam-dcchen@pacbell.net-/StopSpammers/nospam
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Viewed:
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785 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)
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.
Dave
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Message has 1 Reply:
 | | Re: robotic rovers
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| (...) Yeah... the LDrawn design I came up with is at (URL) I'm very happy with because with two differentials it allows me to track both linear and rotational motion. (25 years ago, 27-Aug-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: robotic rovers
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| I have another LDraw(n) rover that I posted in the (URL) group. Only problem is that it's kind of top-heavy, and the motors don't gear down much. Still, it's another design to compare. Incidentally, has anyone tried to combine a rotation sensor and (...) (25 years ago, 22-Aug-99, to lugnet.robotics)
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