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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.
@Sahko
i might as well through my hat into this ring, for the past few weeks ive been trying to RE this watch focusing on the firmware for a while, just to find out its espruino.......
Now im trying to add a HR sensor to mine.... This should be very very possible. Im down to one of two ways to get it added, its to either find the watch this one is based on which would have the HRM sensor and the likes. or to add it in from scratch and simply use i2c to interface it. There is a spare unused connector on the pcb for the starfield watch which i believe was supposed to be used for the hrm sensor and could potentially have been used for NFC given its connection to those pins.
I would love to know more about the ancestry of the watch and i have a sneaking suspicion that the GW32 smart watch which is NRF52840 based can be a strong candidate since they are similar in some ways. My plan is to either buy one or find someone with one