Subject:
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Re: Shutting off illumination LED on Light Sensor for LIDAR
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 28 Mar 2001 21:48:22 GMT
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Original-From:
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Chris 'Xenon' Hanson <xenon@3dnature.AVOIDSPAMcom>
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Reply-To:
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xenon@3dnature./AntiSpam/com
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Viewed:
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698 times
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Andy Gombos wrote:
> This sounds very cool. If you want to do the mapping at the bottom, you will have
> to use alternitive firmware anyway (right?),
Maybe. I think RCX2 with NQC has some crude arrays, I haven't
looked into them yet, but I might be able to use them to do
simple mapping on the RCX. Or something even cruder if I don't
have arrays.
> and they have a passivate command that
> turns off the light. It passivates the sensor, but I don't think standard firmware
> has anything like this.
Ahh. Hmm. I wonder what it actually does. Since writing, I
found
http://www.crynwr.com/lego-robotics/light-sensor.html
which in encouraging,
and
http://www.hempeldesigngroup.com/lego/lightsensor/index.html
which both confirm what I was speculating.
Since it is an LED (Light Emitting DIODE) I would figure that
I could cause it not to emit by reversing the polarity of the
supply voltage. Not sure how that would affect the performance
of the phototransistor though.
> Andy
Chris - Xenon
--
Chris Hanson | Xenon@3DNature.com | I've got friends in low latitudes!
New WCS 5 Demo Version! http://www.3DNature.com/demo/
"There is no Truth. There is only Perception. To Perceive is to Exist." - Xen
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