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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.
@Ollie
Yes. On the Wifi NodeM there's a tiny hole in antenna which is embedded in the PCB. I don't know whether I grounded it, or powered it, but one of the two massively improved the reception. Without that, a scan of APs returned 1, or 2 at best, when a NodeMCU would return all in range.
Odd though, you say Micropython Wifi runs fine on yours, and others seem to have also had success with the Wifi-NodeM running Arduino, so maybe there is an Espruino related quirk on the Robodyn boards.