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By piecing together bits you are doing much more work in the inner loop. Probably you need to increase the delays to get a stable result.

Great news!

I didn't quite understand what solved the problem. Just the println or is the energia library also required?

Good to hear the gradient is working.

Actually there is a precompiled version of the Java prog in the /bin directory. It should work without recompiling.

Regarding the matrix layout: It's...

OK, i quickly created a debug sketch. It displays a gradient with lots of colors, and does not require any PC connection. It should just work when powering up the Teensy.


/*
* Modified by...

What exactly happes, does it crash or fail to open the COM port? I haven't tested on Mac, maybe I can test tomorrow on a Macbook Air.


I feed RGB888 values. The argb value is just an intermediate...

Found the bug causing some artifacts at the bottom. It was an index out of range because of a wrong timer.

Edit: After hours of searching and writing unit tests i fixed another rare bug, caused by...

Teensy is just so awesome!
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In contrast to the intelligent LED-strips, the cheap 32x32 RGB panels natively only support 1bit per color. If you want more, you have to switch the LEDs rapidly....