Subject:
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Re: Light sensor broken?
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 2 Sep 1999 00:42:00 GMT
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Viewed:
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586 times
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Jacob Schultz <anne.jacob@get2net.dk> wrote in message
news:37CD9C7B.9EC69388@get2net.dk...
> I have difficulties using my light sensor.
> The sensor value doen't seem to change very much. The light goes on as
> expected when my program starts, but the RAW values are quite close:
> White paper gives about 710, and black plastic gives about 820 and the
> values seem to drift a little around, like 5 units or so. If I put the
> light sensor close to a lamp (1 cm) it reads about 430. Is this normal,
> or is something wrong?
Are you using an alternative programming language? If you are using the
LEGO supplied software and reading RAW values, the light sensor won't be
powered and the LED will not be lit. The values you are getting sound like
this is the case.
If you want to know if the Light Sensor is OK just test it as Light Sensor
with the LEGO supplied software. If it doesn't light up and read from about
25 to 100 there is something wrong with the sensor.
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Message has 1 Reply:
 | | Re: Light sensor broken?
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| Michael Gasperi <gasperi@alynk.com> wrote in message news:FHEq60.Lv1@lugnet.com... (...) like (...) about (...) I hate replying to my own post, but just realized that the range of RAW values Jacob posted are about normal for a Sensor Type set to 3 (...) (25 years ago, 2-Sep-99, to lugnet.robotics)
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Message is in Reply To:
| | Light sensor broken?
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| Hi I have difficulties using my light sensor. The sensor value doen't seem to change very much. The light goes on as expected when my program starts, but the RAW values are quite close: White paper gives about 710, and black plastic gives about 820 (...) (25 years ago, 1-Sep-99, to lugnet.robotics)
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