There's already something in Gadgetbridge that handles OpenStreetMap directions at https://codeberg.org/Freeyourgadget/Gadgetbridge/issues/2387 - unfortunately Google Maps doesn't appear to expose directions in anything other than a notification but I think that if the above code is merged in, it shouldn't be too hard to parse navigation directions out of the Google Maps notification (at least for english language)
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.
There's already something in Gadgetbridge that handles OpenStreetMap directions at https://codeberg.org/Freeyourgadget/Gadgetbridge/issues/2387 - unfortunately Google Maps doesn't appear to expose directions in anything other than a notification but I think that if the above code is merged in, it shouldn't be too hard to parse navigation directions out of the Google Maps notification (at least for english language)