Arduino Forum

Using Arduino => General Electronics => Topic started by: jamesconley75 on Sep 27, 2016, 07:42 am

Title: rgb matrix 32pin to uno r3
Post by: jamesconley75 on Sep 27, 2016, 07:42 am
How to control 8x8 rgb matrix with uno?
Title: Re: rgb matrix 32pin to uno r3
Post by: raschemmel on Sep 27, 2016, 08:25 am
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 ?
Title: Re: rgb matrix 32pin to uno r3
Post by: Grumpy_Mike on Sep 27, 2016, 09:44 am
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 (http://www.thebox.myzen.co.uk/Hardware/Hexome.html)

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