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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.
user65682
Thanks!
The aerial is the thin white bar on the blue PCB, right near the edge of the board. I guess it could have got damaged if the Puck was re-assembled back to front - or it could have been a manufacturing thing but I'm very surprised they didn't pick it up.