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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.
@fanoush
the double reset is a bit tricky, too slow or too fast and it boots into espruino. you can also poke this magic value https://github.com/adafruit/Adafruit_nRF52_Bootloader/blob/master/src/main.c#L112 to GPREGRET
and BTW I started to get those two red boards in the 3 item bundle offer for $4.49, this is pretty insane