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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
@zarconi if you're connected to the 3G modem via wired serial then it is possible - however I may have misunderstood your question. If you were asking whether you could use it with a Bluetooth-connected 3G modem then @billsalt is correct - that kind of UART over bluetooth connection is part of normal Bluetooth, not Bluetooth LE.