Usually, when working with a modern microcontroller, it doesn't turn off. When it's "off", it's in sleep with everything else turned off, set to wake on button press.
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.
Usually, when working with a modern microcontroller, it doesn't turn off. When it's "off", it's in sleep with everything else turned off, set to wake on button press.