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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.
@hungryforcodes
Yeah I'm using it as well for a project and while the software SPI trick certainly sped it up (I was using hardware SPI), its still pretty glacial. Interestingly, here is a guy who's got a number of games, including DOOM, running on an ESP32 and an ILI9341.
https://hackaday.io/project/163464-gaming-on-the-esp32-odroid-go
Its PRETTY fast. So there is potential....