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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
I think in Windows you need to pair the device using the Windows Bluetooth menu before the Web IDE is able to access it.
Which version of the IDE worked for you, and which one didn't? If it's some problem with the recent version I'd like to get it fixed asap.