Garth Zeglin and I figured out a workaround, so that the Mondomatrix Led matrix could run off of a USB to RS-485 converter.
With the related patch, only max or max runtime is needed. No need for a microcontroller or arduino coding.
Here is a link to the max patch
I am having difficulty hosting the runtime version at the moment. Please let me know if you want direct access for now.
Here is the compressed code:
----------begin_max5_patcher----------
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-----------end_max5_patcher-----------



