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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
Great!
It's ok - it looks like an issue with USB flow control on the Espruino Board itself (in fact on all operating systems). It is something I'll be trying to look at, but there isn't so much urgency now.