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  • You are basically describing an Espruino WiFi without the WiFi on it... Would one of them do you? It's not like you have to turn WiFi on: http://www.espruino.com/WiFi

    I think next on my list is probably a Bluetooth LE device on a 0.1" breakout board. There wouldn't be USB, but there's some fancy temperature-based drift correction in the RTC so it's actually pretty decent.

  • What about adding bluetooth LE to the Espruino WIFI? That way it could act as a 'relay' for the Puck . (the puck only needs a coin battery whereas the wifi needs something more robust)...

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