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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.
@parasquid
Hmm looking at the targets, it seems that the nrf5x are custom code that applies to the nrf5x family, and that includes the i2s neopixel drivers.
At least for now I've got it working on the nRF52840 board I have; I'll have to try compiling for the nRF52832 based boards and see if specifying the LRCK pin on i2s would break anything (hopefully not).
I also chose D23 since the other boards (notably MDBT42Q) are choosing that, instead of the default D22. I thought that should minimize any breaking changes.