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 00:57:51 GMT
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Viewed:
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844 times
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Michael Gasperi <gasperi@alynk.com> wrote in message
news:FHEq60.Lv1@lugnet.com...
> 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.
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 (light) and
a Mode set to 0 (raw). There is probably nothing wrong with your sensor.
430 to 820 is still a lot better resolution than 25 to 100.
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Message is in Reply To:
 | | Re: Light sensor broken?
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| Jacob Schultz <anne.jacob@get2net.dk> wrote in message news:37CD9C7B.9EC693...2net.dk... (...) 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 (...) (25 years ago, 2-Sep-99, to lugnet.robotics)
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