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Introduction to LEDs and how to use LEDs

Learn how to make your own LED light bulbs. Share your own project plans and ideas here. General LED discussions.

Introduction to LEDs and how to use LEDs

Postby techman » Tue Sep 18, 2012 8:28 pm

How to calculate LED resistors, how to string multiple LEDs together to make a LED light bulb. An LED resistor calculator which shows you which resistor you need for your particular LED. An LED color chart which shows you voltage, color and current. A free online MCD (millicandelas) to Lumens calculator. How to make your own LED light bulbs and more.

Check out this collection of projects and tools here:

http://www.thediyworld.com/DIY-LED-Ligh ... -Facts.php

Use this forum to post anything about LEDs.
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Introduction to LEDs and how to use LEDs

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Re: Introduction to LEDs and how to use LEDs

Postby tburnham316 » Thu Oct 04, 2012 2:00 pm

Does your book on The Do It Yourself LED Light Bulb (120 Volt Sockets) give links of where to purchased the components to build ?
The links that currently are listed in your instructions take you to Jameco. To buy the components from Jameco for a 40 LED Light bulb the costs are $45 + socket adapter and
$61 + socket adapter for the 60 bulb LED. This seems a little expensive to me. In a 120V socket at this cost I don't see how I would ever recover the cost of this bulb verses a few CFL's.
Thanks for your response, I originally found you on YouTube and have enjoyed watching your videos.
Tom
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Re: Introduction to LEDs and how to use LEDs

Postby techman » Thu Oct 04, 2012 6:10 pm

Ebay is the answer. I get most of my low priced parts online there. Browse around some and you can find some incredible deals.
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Re: Introduction to LEDs and how to use LEDs

Postby robertlelliston » Thu Nov 15, 2012 1:43 pm

Do you have any more free books on the "how to" 120 volt led bulbs
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Re: Introduction to LEDs and how to use LEDs

Postby techman » Tue Dec 11, 2012 12:08 pm

Sorry, that give away has long run out. Thanks for asking tho.
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Re: Introduction to LEDs and how to use LEDs

Postby Jolsonwa » Sat Nov 02, 2013 11:41 pm

How do we get the discount on mrbeems products. We have really enjoyed watching your videos, hopefully we can help in someway in the future.
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Re: Introduction to LEDs and how to use LEDs

Postby techman » Wed Nov 06, 2013 12:00 pm

Go to www.MrBeams.com and enter the code OFFGRIDCONTEST to get 40% off your next purchase of Mr Beams lights. This code is valid until Dec 31, 2013.
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Re: Introduction to LEDs and how to use LEDs

Postby sanimirza » Thu Nov 06, 2014 4:51 am

I need help with an LED lamp. I want it to cycle through colors and white with a small button. I'm not good at math or science so I need help figuring out the watts and rechargeable battery power and a lot more. If you could message me we could talk through a private message. The lamp will cycle through red yellow green blue white
sani
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Re: Introduction to LEDs and how to use LEDs

Postby techman » Sat Dec 06, 2014 11:51 am

If you are still there, I would be happy to help out out here on the forum. Private messages are not working for me anymore due to receiving too many emails right now. I have over 1,000 emails to read.
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