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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
Maybe check that you have the latest
bluepyand that nothing else is running (eg EspruinoHub) that might be using Bluetooth. And is the Puck's firmware up to date?If so, I think your best bet is to post on bluepy's GitHub issue tracker and see they can help figure it out