Subject:
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[MindStorms FAQ 2.4 How do I use the light sensor?]
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Newsgroups:
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lugnet.faq
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Date:
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Tue, 13 Jul 1999 21:59:28 GMT
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Viewed:
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2591 times
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Subject: 2.4 How do I use the light sensor?
Content-Language: en
Topic-Level: 0
Revision: Robert Munafo, 1999-07-13
Location: /robotics/rcx/
Comment: Topic-level is inaccurate pending a reference for topic
levels
<p>The touch sensor is a 2 x 4 x 1 1/3 brick with an LED (light emitter)
and photodiode (light detector) on the smallest face (the "end" of the
brick) and a non-detachable 9V connecting cable. You connect the other
end of the cable to the RCX, and then (using your chosen programming
method, see section 3 answers below) tell the RCX to do something
based on a light level or range of light levels. You might want to
mount the sensor on an arm that rotates under motor control, so you
can "scan" the area ahead of you, or you may want to obstruct the
light emitter by placing a beam (a narrow brick with holes) in front
of it, so that the detector detects ambient light and doesn't see the
reflected light from the LED. You can use a fixed light sensor to
detect the presence of an object, such as a ping-pong ball on a
conveyor belt. </p>
<p>The printed instructions ("constructopedia"), CD-ROM idea area
("programmopedia") and various users online web sites give many
examples of specific applications of the light sensor. </p>
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Message has 1 Reply:
 | | [MindStorms FAQ 2.4 How do I use the light sensor?]
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| Subject: 2.4 How do I use the light sensor? Content-Language: en Topic-Level: 0 Revision: Robert Munafo, 1999-07-14 Location: /robotics/rcx/ Comment: Topic-level is inaccurate pending a reference for topic levels <p>The light sensor is a 2 x 4 x 1 (...) (25 years ago, 14-Jul-99, to lugnet.faq)
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