Subject:
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RE: EGAD! (pneumatics)
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 16 Jun 2003 13:40:25 GMT
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Original-From:
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Rob Limbaugh <rlimbaugh@greenfieldgroup.com=AvoidSpam=>
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Viewed:
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814 times
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If I remember right, a 555 can be used as a pulse detector.
Obviously, a microcontroller is the better choice, but a 555 based
circuit (if possible) would be easier to duplicate by the general
population.
-----Original Message-----
From: Philippe Hurbain [mailto:philohome@free.fr]
Sent: Monday, June 16, 2003 7:44 AM
To: lego-robotics@crynwr.com
Subject: Re: EGAD! (pneumatics)
> To my understanding, the RCX uses pulse width modulation to actually
> control motor speed, so I'm thinking the first thing you'd need is a
> capacitor to even out an RCX output to a level voltage, then an ADC to
> convert that into a digital signal, and a demux to take that digital
> signal to address any one of several individual devices.
IMHO, it would be much simpler and precise to measure directly pulse
width instead of voltage, that could be done easily with a small
microcontroller...
Philo
www.philohome.com
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