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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@JumJum
Original Espruino Boards are faster than ESP32, at least for functions like this.
But I'm pretty sure, based on my experience with 32x64, 64x64 even Espruino boards will still be too slow.
Watching prices for 64x64 boards, they are really cheap, P2.5 for less than 13€ shipping included
I2S would be an option, if parallel mode is supported. Have in mond you have to set 11(5+6) data and 3 control ports for a 64x64 Matrix
Special driver like the one for Neopixel could be an option.
If I would be Gordon, I would not like this. Support for several boards could end in a nightmare.