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Subject: 
Light sensors
Newsgroups: 
lugnet.robotics.rcx.legos
Date: 
Thu, 27 Jan 2000 12:25:00 GMT
Viewed: 
1578 times
  
Hi!

Maybe this is obvious for all experienced legOS users - I am displaying the
values read from the light sensor on the LCD, and I get values of ~30 for light
and ~520 for darkness... This seems very strange - is it the display wrong, or
are these the values? The demo 'linetrack' is assuming the "normal" values with
larger ones fore more light and is working....

thanks
/Vlad



Message has 2 Replies:
  Re: Light sensors
 
(...) more light and is working.... Erm... it isn't really working - it exhibits the same 'inverted' behaviour, looking for a white line on a black background... /Vlad (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
  Re: Light sensors
 
(...) I looked closer at the readings, and the readings are okay for light backgrounds. For a dark one, however, the value is only half of the time the right one - for the other half 0x1F0 gets added to it... Anyone ideas why this is happening? (...) (25 years ago, 28-Jan-00, to lugnet.robotics.rcx.legos)

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