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Topic: Hot to diffuse Multicolour LED? (Read 1 time) previous topic - next topic


I picked up a couple of glass cubes with traditional bulbs in them from a charity shop. I've rigged up a bunch of three-colour LEDs which crossfade to go inside instead of the lights that came with.

The LEDs are clear though, and while the inside of the glass cubes are frosted there's obvious spotting and you can see the separate LED colours when more than one are on at once.

Is there any easy way to diffuse them?


Sandpaper (skuff up the plastic housing), straws (cut off a small piece and cover the housing), ping pong balls (put the LED inside), and styrofoam (shape a small piece and put the LED inside) can all work.

I have personally had pretty good success with sandpaper.



Thanks! I've ordered a bunch of ping pong balls, I think it'll suit the fitting.


I think wax paper (not sure what you might call it there) does a great job as a pre-diffuser.  Cut out a square and crumple it over the LED and place that in your frosted cubes.
"Who is like unto the beast? who is able to make war with him?"
When all else fails, check your wiring!


Waxpaper! That's pretty clever!
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.


i confirm that ping pong ball works like a charm!
I use them with piranha rgb led.

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