Subject:
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RE: Homemade LED Bricks
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 15 Nov 1999 14:05:35 GMT
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Original-From:
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Jim Thomas <JIM.THOMAS@TRW.ihatespamCOM>
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Viewed:
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1845 times
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Digikey has a two wire bi-color LED. The part number is L10008-ND, the
manufacturer is Chicago Miniature Lamp, it is on page 601 of the current
catalog and the page is available in PDF at www.digikey.com. I just used
some of these in a box I designed for work. These LEDs have 6" wire leads
attached, are in .25" panel mount housings, and cost $2.52 each.
JT
> -----Original Message-----
> From: tking@together.net [mailto:tking@together.net]
> Sent: Sunday, November 14, 1999 5:22 PM
> To: lego-robotics@crynwr.com
> Subject: Re: Homemade LED Bricks
>
>
> I've made a few LED 'bricks, and am about to make some more
> like "Flashing towers" with some of the ??name?? tapered
> cones and transparent small round tops.
>
>
> 330 Ohms is my pick; plenty bright at about 20 Ma for most
> LEDs and dims nicely with "Set Power". I usually run
> power level 5 with efficient LEDs and they are plenty
> bright. The AVERAGE current must be about 10 Ma.
>
> My 8 year old granddaughter was fine last week with the concept
> that "you have to write a separate TASK for the computer if
> you want it to blink the lights at the same time it's
> driving the robot". She wrote task blinker() pretty fast, and
> start blinker and stop blinker were obvious.
>
> I have two separate LEDs 'back-to-back' in most of mine. The
> "bicolor' LEDs I have from Radio Shack have 3 terminals and
> cannot be run so that reversing polarity changes the color.
> Anyone seen a TWO-TERMINAL bi-color LED??? It would be nice for
> fitting into a small transparent beacon.
>
> I have successfully made contacts on my bricks with copper foil
> tape on a standard brick. I'll put up a .JPG if someone can tell
> me where there is an appropriate Binary location on this server....
>
> GOTTA have Blinking Lights!!!!!
>
>
>
> --
> Regards,
> Terry King ...In The Woods In Vermont
>
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