Subject:
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Re: More outputs, thinking outside of the box...
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 11 Mar 1999 23:05:08 GMT
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Viewed:
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1079 times
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Dennis - Check out my solution using small relays at:
www.truepicture.com
--- John.
On Thu, 11 Mar 1999 21:51:38 GMT, "Dennis Clark" <dlc@verinet.com>
wrote:
> John Brubaker writes:
> > Dennis - How can you make use of the 3rd. motor if it needs to be
> > available to bump the switch? Also, how would you deal with the
> > polarity going to the 2nd set of motors? Thanks --- John.
>
> Often you don't need continuous motion, eg. robot arm, and you can keep
> to a limit. If you use another bump switch to tell the RCX that the motor
> shouldn't turn any more you can stop the action before you get to the
> second bump switch that changes the mode.
> Hmm, I see your point. You will need a set of switches for _every_
> motor, one set will only switch one motor. However, it can't be any more
> expensive than all of that complex linkage in the other thread! And for
> cheap, you can make your own switch that is SPDT for less than $2.00
> with a micro switch of your own.
> Darn, I _knew_ it was too simple to work out that way! You will need a
> pair of switches for each _side_ of each motor pair so you can switch power
> polarity. This means that your Rube-Goldberg lever now must handle four
> switches per pair of motors! Is it still viable? Its no worse than any
> other solution and needs a lot less mechanical precision! I still see a
> simple cam mechanism with a rubber band default, it just has ganged levers
> and stacks of switches!
>
> have fun,
> DLC
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Message is in Reply To:
 | | Re: More outputs, thinking outside of the box...
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| (...) Often you don't need continuous motion, eg. robot arm, and you can keep to a limit. If you use another bump switch to tell the RCX that the motor shouldn't turn any more you can stop the action before you get to the second bump switch that (...) (26 years ago, 11-Mar-99, to lugnet.robotics)
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