Electronics > Projects, Designs, and Technical Stuff

kCube - LED cube design revisited

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MasterT:

--- Quote from: tatus1969 on March 27, 2018, 08:44:42 am ---Do you have pictures or videos of your cube? I would be interested.

--- End quote ---
No, don't have a video.  On youtube there are similar
It's all about transparency, leds should not  create obstruction. Even spacing in-between leds is important.

tatus1969:

--- Quote from: firehopper on March 27, 2018, 12:51:15 pm ---the apa102 2020 sized ones are clear I think. at least the ones I saw for sale on evilbay seemed to have a clear housing.

--- End quote ---
Thanks, didn't know them yet. They look really good, and they are very small  :-+ :-+

Kevman:
I built an 8x8x8 LED cube a number of years ago, before the kits were available. I take it to demoparties and have it respond to the sound in the room. People really like it.

This is mine:

I think that unless you can see the light well when looking at it straight on it won't look very good, but that should be fixable.

tatus1969:

--- Quote from: Kevman on March 27, 2018, 04:29:31 pm ---have it respond to the sound in the room. People really like it.

--- End quote ---
Looks great! A mic will also be integrated in my kit.

cowana:
It's hard to see in your 3D model of the flexi PCB design - are the 100nF decoupling capacitors mounted on the underside beneath each LED?

Every commercial LED strip you can buy with WS2812B LEDs includes one capacitor per LED - without that the latched data stored in each LED can easily become corrupted due to the PWM noise on the supply rails, and you get flickering of random colours. This becomes more of an issue the further you get from the power supply, as the impedance of the long traces along the strip starts to add up.

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