Subject:
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Rotation sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 3 Feb 2000 16:44:03 GMT
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Original-From:
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Jan Troelsen <JTRO@BENJAMIN.IFF.nospamING.TU-BS.DE>
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Reply-To:
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J.TROELSEN@TU-BSsaynotospam.DE
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Viewed:
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2130 times
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Hi !
I am trying to make a gray code rotation sensor using hardware from an old
mouse.
The circuit needed to drive the photo transistor should be the same as for
your rotation sensor URL: http://www.umbra.demon.co.uk/sensor1.html.
I do however don't quite understand the photo resistor driver part. Are You
sure the circuit drawing is correct ?
Thank you in advance for your answer
Jan Troelsen
Institute of Flight Guidance and Control
Hans-Sommer-Str. 66
D-38106 Braunschweig
Tlf +49 (0)531 391 3749
E-Mail: j.troelsen@tu-bs.de
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Message has 1 Reply:
 | | Re: Rotation sensor
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| (...) The circuit shown, is rather basic, but perfectly acceptable. The phototransistor draws a varying amount of current according to the incident light level. During the 'sense' phase of the Lego cycle, the voltage being returned is read, with the (...) (25 years ago, 4-Feb-00, to lugnet.robotics)
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