Have you powered the board from a battery? If you just use RAK's dev shield then it only powers 3.3v, which means the modem never gets any power so never powers on
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.
Have you powered the board from a battery? If you just use RAK's dev shield then it only powers 3.3v, which means the modem never gets any power so never powers on