64X64 Led Matrix Column Flickering

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drewblank
 
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Joined: Tue Sep 07, 2021 12:30 pm

64X64 Led Matrix Column Flickering

Post by drewblank »

I'm getting random ROWS* (oops :p) flickering on my 64x64 led matrix.
Video showing issue: https://photos.app.goo.gl/FtsynjVkL16yp2xV9

Using pi zero, adafruit bonnet, and HUB75 64x64 led matrix. Followed install guide on Adafruit's website.

This random column flickering is not unique to the mlb score program, happens with any of the demos. Installed 'quality' mode, soldering GPIO 4 to 18. Tried different --led-slowdown-gpio values with no discernable difference. Changing brightness doesn't change anything.

One thing I noticed is the power supply output is a little high, rated for 5V but outputting 5.3V...not sure if that would cause the column flickering.

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adafruit_support_carter
 
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Joined: Tue Nov 29, 2016 2:45 pm

Re: 64X64 Led Matrix Column Flickering

Post by adafruit_support_carter »

Did you make the modification required for 64x64 matrices?
https://learn.adafruit.com/adafruit-rgb ... ep-2982866
Need to solder closed a jumper.

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