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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.
@Eddie
Hi Gordon,
Thanks for explaining it in detail! That's a bummer (for me in this particular application), but understandable.
Perhaps a MDBT42Q could be an alternative (as i assume that one does not have to swap and should be accurate), but i have no spares laying around.
I'll then use a Pico without the Crystal and a DS3231 module as an external reference. I've tested that in the meantime and seems to be a working 'alternative'.