Subject:
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Re: Need Electrical Help
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 22 Oct 2008 23:33:18 GMT
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Viewed:
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11433 times
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In lugnet.trains, Rob Hendrix wrote:
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In lugnet.trains, Tom Keenan wrote:
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I realize that this is an old post, but I jut found it...If I want to hook
up a bunch of LED’s (say they are 2.1 volt and I want to hook up 10) to a 9v
system, what do I need to do? Only hook in four at a time or something like
that?
I could wire a whole house, but when it comes to small scale electronics, I
am a complete novice.
I have a LEGO train track going around my son’s room near the ceiling. I am
building a Santa Sleigh and rindeer to run on the tracks and I’s like to
light up Rudolph’s nose with an LED as well as have several LED’s along the
other reindeer and the sleigh so that they look like traditional christmas
lights.
Thanks.
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For the DIYers out there:
LED Resistor Calculator
For quick results without having to think:
You can run 1 (2.1v) LED from 9v if you hook up a 390 ohm (1/4 watt) resistor
between one lead of the LED and the power source.
You can run 2 (2.1v) LEDs in series from 9v if you hook up a 270 ohm (1/8
watt) resistor in the series.
You can run 4 (2.1v each) LEDs in series from 9v if you hook up a 33 ohm (1/8
watt) resistor in the series.
And now for the shameless plug:
You could just buy an (eLite) lighting kit from LifeLites for lighting up
your MOCs. This is the easiest approach as it involves the least
mathematical, brick-modifying, or soldering skills to figure out. Simply
plug the LEDs into the controller and plug that into your LEGO power source.
Done! LifeLites also offers a range of accessories like extension cables,
expanders, and adapters so you can get the most bang for your buck. Check
them out today at a LifeLites website near you!
-Rob
Brickmodder Labs and
LifeLites Micro Lighting Products
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I appreciate the links and information. I was looking at your stuff before
(VERY cool) I posted, but I have always wanted to mess with this type of stuff.
You have some neat stuff and I will probably come knocking at your door when I
enevitibly fail. But, for now, I would like to try it myself.
Thanks for your help.
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Message is in Reply To:
 | | Re: Need Electrical Help
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| (...) For the DIYers out there: (URL) LED Resistor Calculator> For quick results without having to think: You can run 1 (2.1v) LED from 9v if you hook up a 390 ohm (1/4 watt) resistor between one lead of the LED and the power source. You can run 2 (...) (16 years ago, 22-Oct-08, to lugnet.trains, FTX)
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