Subject:
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Re: IR Ball (was Soccer-Playing Robots)
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 7 Sep 2000 11:55:48 GMT
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Viewed:
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681 times
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> I tried to build something like this. I was just trying to make a film
> canister into a beacon (even if the LEDs had to be external). I was using
> high-output IR LEDs powered by small lithium watch/camera batteries. What I
> discovered was that no amount of IR LED seemed to be enough to trigger the • LEGO
> light sensor usefully.
Hi Ben
It seems that the Lego IR sensor is like a sport car: when you think about
power you never have enough.
Me and Giulio Ferrari made somethin gworking using a lot (28+6) of led to
obtain results. When you think you have enough just add more :)
With this power level when the ball is near to IR sensor (less than 2 inches)
the sensor turn off its emitting led has it feels has enough light :)
Do not give up, just add more leds :)
Have a look at these pictures (if you have noy yet seen)
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=1223
regards
Marco
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Message is in Reply To:
 | | Re: IR Ball (was Soccer-Playing Robots)
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| (...) I tried to build something like this. I was just trying to make a film canister into a beacon (even if the LEDs had to be external). I was using high-output IR LEDs powered by small lithium watch/camera batteries. What I discovered was that no (...) (24 years ago, 7-Sep-00, to lugnet.robotics)
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