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Color-Shifting Crystal Lamp

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Project by toasterburn posted 01-17-2012 06:51 AM 1222 views 2 times favorited 14 comments Add to Favorites Watch





14 comments so far

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a1Jim

112525 posts in 2300 days


#1 posted 01-17-2012 07:16 AM

That’s a very cool crystal .

-- http://artisticwoodstudio.com Custom furniture

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DIYaholic

14139 posts in 1397 days


#2 posted 01-17-2012 07:57 AM

Almost looks like something from the set of Star Trek. In other words…....It’s outa this world!

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

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dspahn

84 posts in 1103 days


#3 posted 01-17-2012 09:33 AM

DIYaholic: I thought the exact same thing…. Reminds me of this:

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Ken90712

15159 posts in 1911 days


#4 posted 01-17-2012 11:00 AM

Very cool project , I like it!

-- Ken, "Everyday above ground is a good day!"

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drbyte

583 posts in 2785 days


#5 posted 01-17-2012 04:36 PM

If you’re going to post something that cool, you at least have to give us a glimpse of the control circuit or the schematic!!! Please!

-- Dennis, WV

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toasterburn

16 posts in 1045 days


#6 posted 01-17-2012 06:06 PM

Sure thing. I posted a schematic of the circuit and a list of the parts.

Thanks for all of the positive comments.

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drbyte

583 posts in 2785 days


#7 posted 01-17-2012 11:17 PM

Thanks for the circuit and parts. But I don’t see anything to make them flicker/flash in the circuit. Is that built into the LEDs? Where did you get your LEDs? Do you have a web site/link?

-- Dennis, WV

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toasterburn

16 posts in 1045 days


#8 posted 01-17-2012 11:33 PM

Yes, RGB (red blue green) leds have a tiny built in chip that causes them to shift between colors. The 5mm are generally rated for about 3v max, hence the resistors. You can buy slow fade that shift slowly, the ones I used shift quickly. I bought mine on ebay. Helps if you use a little sand paper on the leds to scratch them up; diffuses the light more across the crystal. By the way, the piece of crystal is a slice of Agate that a jeweler friend gave me.

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iltws2

25 posts in 1047 days


#9 posted 01-18-2012 03:34 AM

Brings me back to the 70’s. Stobes and Blacklights

-- Medicaid Carpenter

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smndrummer

47 posts in 1068 days


#10 posted 01-18-2012 05:09 AM

That’s awesome! I feel like I’m watching Avatar on acid. “I think the trees are talking!” “What are they saying?” “I don’t know, but it’s gotta be important! Trees don’t just say anything!” – Rich

-- - Rich

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drbyte

583 posts in 2785 days


#11 posted 01-18-2012 04:30 PM

Great!!

-- Dennis, WV

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Sorethumbs

38 posts in 1370 days


#12 posted 01-19-2012 05:24 PM

That is really neat. Truely intriguing. Two questions, if you don’t mind:
What keeps the three LEDs in the same phase of color at the same time?
Why not use a 3V button battery and skip the resistors?

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toasterburn

16 posts in 1045 days


#13 posted 01-19-2012 05:45 PM

They’re not in phase, each shifts color randomly. And each led needs 3v to operate correctly, so with 3 leds a 9v battery is perfect. The resistors just make sure each led isn’t hit with the full 9 volts, which would burn them out.

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Dark_Lightning

1797 posts in 1831 days


#14 posted 12-28-2013 02:54 AM

Wow, cool! From ~2 years ago, yet.

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