64x32 matrix showing colored rectangles that don't go away

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twincommander
 
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64x32 matrix showing colored rectangles that don't go away

Post by twincommander »

Here is a picture showing the results of demo program using -D0 with raspberry pi 3 B+ and Adafruit RGB Matrix HAT + RTChttps://1drv.ms/i/s!AsOjLyx6vGkJiW34-I2 ... 5?e=P95Tny. I see the note "The demos kinda run, but I’m seeing weird rectangles and glitches" suggesting changing the --led-slowdown-gpio value, but all values 0-5 produce the same image issue. When using the demo with -D4 https://1drv.ms/i/s!AsOjLyx6vGkJiW6Ah3Y ... g?e=10TLdM or other animated demos only the far right corner 16x16 shows the demo. When using demo program I send the --led-rows=32 --led-cols=64 values but doesn't seem to matter. I tried 64x64 as a test but see the same exact results. Hat is powered with a separate 5 volt power supply and tried with and without using separate power to the PI. During the software install I selected Quality vs. Convenience (don't care about audio) and I did solder a jumper wire between GPIO 4 and 18. While writing this post I unplugged and replugged the ribbon cable multiple times, and as you can see from this videohttps://1drv.ms/v/s!AsOjLyx6vGkJiXCkM6L ... A?e=fdmIPA the display changes every time finally ending with -D4 right corner 16x16 demo. Thinking its a solder issue I re-soldered it all the points. Same issue.

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mikeysklar
 
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Re: 64x32 matrix showing colored rectangles that don't go away

Post by mikeysklar »

What are you using for a power supply to the Matrix Hat?

On my Pi 3B+ I needed to use these args to get a smooth demo -D0

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--led-cols=64  --led-slowdown-gpio=4

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