Subject:
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Re: CD auto feeder project
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 12 May 2004 02:21:05 GMT
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Viewed:
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1195 times
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> You can also connect two bump sensors in parallel onto one RCX port.
> You can't
> tell which sensor is pressed - but if you are moving the arm down - and
> a sensor
> triggers, it's gotta be the bottom one - and if you are moving up - it's
> gotta
> be the top one. That frees up another sensor port.
Or multiplex bump sensors mechanically...use one touch sensor on a cam
on an axle, normally pressed in and held centered with a rubber band.
Any number of "inputs" can be hooked up perpendicular to the axle using
an bumper connected to a push rod and a lever off the axle.
I have used this to provide seperate front and rear bumpers connected to
one touch sensor quite sucessfully...
OR even better is to use a rotation sensor/touch sensor tied to the
driver shaft as a stall detector...The first time I saw this done I just
had to slap my head and say "why didn't I think of that!?!"
-Rob A>
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Message is in Reply To:
 | | Re: CD auto feeder project
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| (...) ...maybe - but you could do it with TWO RCX's! Remember, they can talk to each other via IR. The RCX has three motor ports and three sensor ports (although you only get two motors in the set)...I think that's plenty for this application. (...) (...) (20 years ago, 8-May-04, to lugnet.robotics)
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