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  • web Bluetooth (no luck on Windows or ubuntu).

    You could use EspruinoTools to get a command-line interface if that helps - it uses the bleat NPM module which has some support for other OS's.

    From what I can tell, most software "pairs" with a Bluetooth device before firing up comms

    This definitely does establish some kind of connection - there's no pairing though. It's something that could be added (I think relatively easily) but it's not a priority at the moment.

    Are you sure you're not getting BTLE confused with 'normal' bluetooth? The chip's BTLE won't establish a 'normal' serial port connection on your phone - you need some special code from Nordic for the 'Nordic UART', so an existing smartwatch app is unlikely to work unless it has specific support for that.

  • I'll give EspruinoTools a go, that sounds better.

    The connection issues probably are the Nordic specific thing. I thought there was a generic serial profile for ble and assumed it was being used. Thanks!

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