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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
Have you found the
UART selection switch?I'd make sure it's on USB, open a terminal app on your PC, and make sure you can communicate with the SIM808 directly... Then switch it over and try and do the same from the Espruino...
It could just be that the switch is in the wrong location though?