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Help With LED Matrix

Hey everyone, 

I've been making LED displays for various projects now and I understand it quite well (thanks to some of the great instructables on this site) though I've only ever made a square or rectangular matrix for my projects and need to make a circular one and am completely lost. How would I go about making and wiring such a thing? Is programming odd shapes different? 

Orngrimm4 years ago
I suppose you want to make a circular disk and being able to turn on single LEDs?
With a rectangular matrix you have ROWS and COLUMNS.
With a round Matrix you have RINGS and SECTORS.

Lets suppose your round matrix consists of 5 circles of led with 10 leds each.
The Anodes of one circle are common and the Cathodes of every sector (10. Every "led-spike" is one) are common.
So you select the ring with the anode and the led in this very ring with the cathode.

I hope i understand what you want to do, because it is (as oldmicah already posted) not very clear...
oldmicah4 years ago
By circular, are you talking about putting LEDs like the curved surface of a cylinder? Wouldn't that be the same as taking a plane of LEDs and bending it?

Or is there some issue with how the LEDs are addressed? (Sorry I'm not getting it)