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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
Thanks @DrAzzy - yes, that's the one - a little dual in line 5 pin package.
Strange that it's blown though - did anything happen that might have caused it problems? Also, when you power up the board via 3.3v, how much current does it draw? It could be that the vreg is working but something is drawing too much current... 0.7v almost sounds like an IC is connected backwards somewhere?