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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
Hi,
I'd have thought that a 2014-era Mac would support Bluetooth LE just fine out of the box (and your screen capture seems to imply it should be ok) - but you're right, the USB adaptor on the shop is CSR and isn't supported by newer Mac OS (it was originally, but Apple removed the drivers for later OSes).
If you go to https://www.espruino.com/ide/, click connect in the top left, then click 'Status', does 'Web Bluetooth' show as 'Ok', or something else?
Is the Mac a 'company' laptop? Sometimes IT departments can choose to lock down Chrome and disable all but the core features.