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RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very flicke
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Please be positive and constructive with your questions and comments.

RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very flicke

by kwmcc on Thu Jun 23, 2022 12:37 am

I've got this set up, the nrf52840 feather with the Matrix Wing (4A power supply), and a 64x32 RGB matrix.

The example code (both Circuit Python and Arduino) gives me about 15 FPS (as reported by the Arduino example code).

It's very difficult to look at. Definitely not what I expected, more like seizure inducing.

Any idea(s) what I could be doing wrong?

Here's a short video of what I'm seeing: https://youtu.be/Md4zOhkppbI (Hard to make a video of a flickering LED, the image is complete and not "rolling", but it is flickering)

Thanks!

kwmcc
 
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Re: RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very fl

by mikeysklar on Thu Jun 23, 2022 8:38 pm

Thanks for the video. I see what you mean that is difficult to look at.

Can you post a photo of any soldering you have done?

Also please link to the test program that you have been running. Would you prefer to pursue this through CircuitPython or Arduino? It will be confusing to do both.

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Re: RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very fl

by kwmcc on Thu Jun 23, 2022 10:12 pm

The soldering photos are in a Google album: https://photos.app.goo.gl/77x7tpfc15MQq8JbA

The ino file is attached.

I'm cool working out the issues using the Arduino path, since that has the most fine grain control over what's going on.

Thank you!
Attachments
FirstRGBMatrix.ino
Arduino code, mostly the sample code for the demo. Modified to use the nrf pins (as documented in one of the guides), and to add debug of the status (totally redundant since it won't pass go if status isn't good).
(1.8 KiB) Downloaded 2 times

kwmcc
 
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Re: RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very fl

by kwmcc on Fri Jun 24, 2022 10:29 am

One correction, the soldering pictures include the Feather Sense I tried as my second attempt.

I tried it using the "bluefruit sense" and a basic "bluefruit feather" (nRF52840). Both had identical results.

kwmcc
 
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Re: RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very fl

by pburgess on Fri Jun 24, 2022 10:23 pm

Taking a look now. The Protomatter library recently got some changes for ESP32…it’s possible something nRF-related was inadvertently broken. I’ll reply when I have some findings!

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Re: RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very fl

by kwmcc on Fri Jun 24, 2022 11:01 pm

Thank you, appreciate the efforts!

kwmcc
 
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Re: RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very fl

by pburgess on Sat Jun 25, 2022 1:25 am

Problem solved! Just published release 1.4.1…it may take an hour or two to percolate to the Arduino Library Manager.

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Re: RGB Matrix + nrf52840 + RGB Matrix Wing: 15 FPS (very fl

by kwmcc on Sat Jun 25, 2022 11:13 am

That worked! Rock solid, no flicker. It's showing over 190 FPS with the demo code.

Thank you again! Really appreciate it!

kwmcc
 
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Please be positive and constructive with your questions and comments.