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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! I'll update the docs on it so others don't fall into the same trap :)
It's actually reading the value of an internal (1.6v?) voltage reference with the ADC to give you that value, so unfortunately it's just as noisy as everything else!