Subject:
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Re: Homebrew Rotation Sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 19 Jan 1999 16:43:59 GMT
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Viewed:
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883 times
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lego-robotics@crynwr.com (Russell Nelson) writes:
> Yes, I suspect you could make it work just like a lego rotation sensor with a
> couple of resistors.
I thought so too, but you can't get the exact voltages you need this way. I
tried to use a similar circuit to the input expanders that have been published,
but no luck. It sorta works but it misses counts too often. A powered version
with an opamp would do the trick. As far as I can tell the RCX really needs
something close to the 1.8, 2.6, 3.8, and 5.1V the real rotation sensor
outputs. This is close to binary weighted gray code, but not quite.
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Message is in Reply To:
 | | Re: Homebrew Rotation Sensor
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| Michael Gasperi writes: > I've been working on the mechanical part for a rotation sensor. So far it is > a 100% lego solution. I still need to work up the software. You can see some > early pics and a description at: > (URL) very cute. I've got a (...) (25 years ago, 19-Jan-99, to lugnet.robotics)
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