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32 x 32 RGB LED Matrix - no blue
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32 x 32 RGB LED Matrix - no blue

by RCMcDonald on Wed Jan 21, 2015 12:10 pm

Hi all -

I'm working with the 32x32 LED Matrix (6mm pitch). I've followed the Adafruit instructions https://learn.adafruit.com/32x16-32x32-rgb-led-matrix/wiring-the-32x32-matrix and installed the sample code, but I can only get red and green LEDs to light. I've triple checked the wiring, and it seems to be right. I tried swapping blue and red wires, and in that case, I still only get red and green LEDs to light. No blue. I did try a bunch of the example sketches, just to see if I could get a different result, and I saw a brief flash of periodic blue from the "scrolltest_16x32" sketch (even though my board is 32x32), but I can't get the blue to light any other way.

Pics of my wiring:
https://www.dropbox.com/s/rbzocox1vvypz ... 2.JPG?dl=0
https://www.dropbox.com/s/ivwbphg6lzdqc ... 3.JPG?dl=0
https://www.dropbox.com/s/603zdj3tmuqcc ... 6.JPG?dl=0
https://www.dropbox.com/s/mt9szxfmo4kox ... 7.JPG?dl=0

Any help you can provide would be much appreciated.

RCMcDonald
 
Posts: 1
Joined: Wed Jan 21, 2015 11:43 am

Re: 32 x 32 RGB LED Matrix - no blue

by Fabio_la on Thu Jan 04, 2018 8:18 pm

Hi there,
Did you have any luck solving this issue?
I just ran into the same problem, trying to control a 32x32 Matrix.
Only red and green show up, no Blue, not too bright either.
I am using an Arduino Mega 2560 R3, tried different other boards 32x32 in case one was faulty, still same problem

Best wishes

F

Fabio_la
 
Posts: 7
Joined: Mon Jun 22, 2015 4:57 am

Please be positive and constructive with your questions and comments.