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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.
@Gordon
Nice - thanks for the post (it's a nice looking little module!).
I'd really have thought that 4k resistors would work - the STM32 shouldn't be that picky. Perhaps it was something wrong with the resistors that came on the board itself?