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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!
The red LED flashing a few times isn't a big deal. Basically Puck.js runs a quick self-test. If you don't release the button quick enough then it thinks the button might be broken and flashes red to tell you - but it doesn't affect anything!