Comments on: 16×24 RGB LED Matrix http://www.youritronics.com/16x24-rgb-led-matrix/ DIY, Electronics, IT, Gadgets Sat, 28 Jan 2012 20:46:04 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: julienb http://www.youritronics.com/16x24-rgb-led-matrix/comment-page-1/#comment-1937 julienb Thu, 24 Jul 2008 10:32:22 +0000 http://www.youritronics.com/16x24-rgb-led-matrix/#comment-1937 hello nice project !! I'd like to drive 64 common cathodes RGB leds I began my project: http://www.julienbayle.net/diy/LiveInterface/ it is a monome clone arduino based and sparkfun PCB based. could you help me ? hello
nice project !!

I’d like to drive 64 common cathodes RGB leds
I began my project: http://www.julienbayle.net/diy/LiveInterface/
it is a monome clone arduino based and sparkfun PCB based.

could you help me ?

]]> By: Florin http://www.youritronics.com/16x24-rgb-led-matrix/comment-page-1/#comment-1401 Florin Tue, 24 Jun 2008 12:12:40 +0000 http://www.youritronics.com/16x24-rgb-led-matrix/#comment-1401 thx Bug, if you would like to share the project on this Blog don't hesitate to contact me. thx Bug, if you would like to share the project on this Blog don’t hesitate to contact me.

]]> By: Bug http://www.youritronics.com/16x24-rgb-led-matrix/comment-page-1/#comment-1396 Bug Tue, 24 Jun 2008 03:00:59 +0000 http://www.youritronics.com/16x24-rgb-led-matrix/#comment-1396 Oh, I see, that's really what he plans on doing... Oh, I see, that’s really what he plans on doing…

]]> By: Bug http://www.youritronics.com/16x24-rgb-led-matrix/comment-page-1/#comment-1395 Bug Mon, 23 Jun 2008 23:06:42 +0000 http://www.youritronics.com/16x24-rgb-led-matrix/#comment-1395 Displays of this size are rarely constantly powered (disregarding the implications of PWM). The LEDs are most likely placed in a matrix similar to that used for reading keyboard input, i.e. the anodes are wired together vertically, the cathodes horizontally, with only one cathode-row being activated at a time. Then only three TLC5940 units (one for each color) would be needed to control the entire display, with the data for each subsequent row being latched into the chips at the same time that the row is activated. If that setup produces too low a refresh rate, then it could be controlled in two 16x12 sections by 6 chips, or three 16x8 sections with 9 chips. This is the same concept that I'll be using to build a full color illuminated 8x8 button pad, which would only need two of these chips at minimum, but I'll likely use three, so that it can be treated electronically as a 16x4 matrix, thus doubling the refresh rate. Displays of this size are rarely constantly powered (disregarding the implications of PWM). The LEDs are most likely placed in a matrix similar to that used for reading keyboard input, i.e. the anodes are wired together vertically, the cathodes horizontally, with only one cathode-row being activated at a time. Then only three TLC5940 units (one for each color) would be needed to control the entire display, with the data for each subsequent row being latched into the chips at the same time that the row is activated. If that setup produces too low a refresh rate, then it could be controlled in two 16×12 sections by 6 chips, or three 16×8 sections with 9 chips.

This is the same concept that I’ll be using to build a full color illuminated 8×8 button pad, which would only need two of these chips at minimum, but I’ll likely use three, so that it can be treated electronically as a 16×4 matrix, thus doubling the refresh rate.

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