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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Sun, 14 Mar 1999 20:35:52 GMT
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Original-From:
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OneTimeCRX <hchea@ramapo!avoidspam!.edu>
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Viewed:
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1064 times
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Dana Dansereau wrote:
>
> > From my experience: • [snippage] ....So I think you would
> have to make a pulse "recognizer" to change the motors, but that would be
> very complicated.
Thanks for the info. It's funny that you should mention a pulse
recognizer, because one of my side projects is an electric tachometer
for my car (which previously had nothing to do with legos). I have a
few IC's that take in current pulses, and transforms it into voltage,
which then can be used to either control a tachometer, or now control a
voltage gate/relay that controls sets of motors. The IC is about the
size of a 1X3 brick, so that wouldn't take up a lot of space. From
digikey, the part # is LM2917N-ND. I'm not sure if it'll work (it all
depends on what hz the rcx operates at), but I'll give it a try.
--
Cheers,
Henry C.
***********************************************************
* TAS: Physics 89 CR-X dx ES *
* Email: hchea@ramapo.edu OR OneTimeCRX@aol.com *
* TLS#28 *
***********************************************************
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | Re: More outputs, thinking outside of the box...
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| From my experience: The RCX uses- pulse width modulation -to save energy, which means it uses a constant voltage-that never drops below 8 volts. It just reduces the overall time the current is on. full power its on continuously and 1 its on 1/8 the (...) (26 years ago, 14-Mar-99, to lugnet.robotics)
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