32x64 Matrix Text Display is Yellow Across Top Half
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- wwhite
- Posts: 17
- Joined: Sun Jul 26, 2015 3:58 pm
32x64 Matrix Text Display is Yellow Across Top Half
I'm using a 32 x 64 aka 32x64 4mm matrix display. Using the testshapes_32x64 demo the top 16 rows and 64 columns are yellow. I can read Adafruit in white within the yellow. Row 17 thru 24 appear to have 'LED MATRIX' and 'dafruit' overwriting each other. Row 25 thru 32 appear to have 32 x 64 and LED MATRIX overwriting each other. I checked my connections twice and verified the code on GitHub. Any ideas on what I am doing wrong? Thanks in advance.
Last edited by wwhite on Sun Jul 26, 2015 9:49 pm, edited 2 times in total.
- wwhite
- Posts: 17
- Joined: Sun Jul 26, 2015 3:58 pm
Re: 32x63 Matrix Text Display is Yellow Across Top Half
I printed a single white pixel and the top half of the matrix shows my single white pixel in white and the remaining 16 x 64 pixels in yellow. The bottom half 16 x 64 pixels are off. Any thoughts?
Last edited by wwhite on Sun Jul 26, 2015 9:50 pm, edited 1 time in total.
- wwhite
- Posts: 17
- Joined: Sun Jul 26, 2015 3:58 pm
Re: 32x63 Matrix Text Display is Yellow Across Top Half
I tried this with a second Arduino Mega and I get the exact same results!
- adafruit_support_mike
- Posts: 67446
- Joined: Thu Feb 11, 2010 2:51 pm
Re: 32x64 Matrix Text Display is Yellow Across Top Half
Could you post some photos showing your hardware and connections please? 800x600 images usually work best.
- pburgess
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- Joined: Sun Oct 26, 2008 2:29 am
Please be positive and constructive with your questions and comments.