Subject:
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Re: Angle Sensor; 1999 Catalog
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 5 Feb 1999 16:20:19 GMT
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Original-From:
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Carlson, Doug R (MN65) <Carlson_Doug@htc.honeywell.=stopspam=com>
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Viewed:
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2867 times
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> > The LEGO sensor can keep up with a motor directly connected to
> > it.
>
> Has this been everyone's experience? I have not had the chance to
> experiment with my angle sensors very much since I got them, but by
> hooking one up to the RCX and VIEWing the sensor reading (sensor set to
> angle via Command Center), it appeared to me that the shaft had to be
> rotating pretty slowly to keep the RCX from missing counts. How slowly?
> About as slow as the micro motor, maybe a little slower, as I recall.
> Perhaps the display of the RCX doesn't update as quickly as the internal
> counters..?
>
> Regards,
> Issac.
I am using two angle sensors in my synchro drive bot and both are rotating
at
mini motor full speed. There have been times where it seemed to drop a few
counts ( approx. 1% )
but I have yet to verify this. I only noticed this because after running my
bot through several square
patterns the turntables had rotated several degrees past where they should
have stopped. I really
need to verify that this wasn't a program error ( more than possible ). In
any case, the angle sensors
will work at an rpm close to that of a mini motor at full speed. I'll look
into this more this weekend and
post any new results.
Doug Carlson
dcarlson@net-info.com
carlson_doug@htc.honeywell.com
http://www.net-info.com/~dcarlson
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Angles and Diagonal Lines (was: Re: Angle Sensor)
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| (...) I run a plotter with two lightly loaded 'old' 9v motors. At power level 4, the angle sensors dropped readings. I geared the sensors down 3:1, and they seem to work fine now. The newer 9v motors are slower - your results may vary. (BTW: the (...) (28 years ago, 5-Feb-99, to lugnet.robotics)
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