Subject:
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Re: Building Sensors/Lights ect.
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 8 Feb 1999 22:18:15 GMT
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Original-From:
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Bill Leggett <billl@pcom.net&NoMoreSpam&>
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Reply-To:
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billl@pcom.net^ihatespam^
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Viewed:
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1040 times
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I use a laser diode to send voice signals in my class. I modulate it with a
transistor and set it so approximately 3 volts DC is dropped across tht laser
diode. I would recommend at least a 100 Ohm resistor in series with the diode.
It is polarity sensitive, so be careful of that. You may want to connect it to a
bridge rectifier to insure polarity. Good Luck!
Sam Edwards wrote:
> What is the best way to build a new sensor or light that is housed in a Lego
> shell. Also could I just hook a laser diode strait up to a Lego wire and
> plug it in, or would I have to hook a resistor or something up?
> thanks.
>
> ----------------------------------------------------------------------------
> ---------------
> Sam Edwards
>
> "On the keyboard of life, always keep one finger on the escape key."
>
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | Building Sensors/Lights ect.
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| What is the best way to build a new sensor or light that is housed in a Lego shell. Also could I just hook a laser diode strait up to a Lego wire and plug it in, or would I have to hook a resistor or something up? thanks. ---...--- ---...--- Sam (...) (26 years ago, 7-Feb-99, to lugnet.robotics)
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