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Topic: rgb matrix 32pin to uno r3 (Read 541 times) previous topic - next topic

jamesconley75

How to control 8x8 rgb matrix with uno?

raschemmel

#1
Sep 27, 2016, 08:25 am Last Edit: Sep 27, 2016, 08:26 am by raschemmel
What about it ?  You need 8*8*3 =192 I/O lines because it's a 3- dimensional matrix ( 8x8 red, 8x8 Green, 8x8 Blue). You need I2C I/O expanders because the arduino doesn't have enough GPIO.  That's just the hardware. You haven't said anything about the software. Do you want 64000 colors too ?  Have you tried to find one online ? WS2812 ?

Grumpy_Mike

#2
Sep 27, 2016, 09:44 am Last Edit: Sep 27, 2016, 09:45 am by Grumpy_Mike
While I would recommend a WS2812b strip of LEDs these days, this project is in essence a RGB 8 by 8 array, only arranged not in a square matrix. Schematics and software is download able from this page.
http://www.thebox.myzen.co.uk/Hardware/Hexome.html

It uses multiplexing to reduce the number of signal lines required.

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