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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.
@user78121
I try save(); dont work.
Bottom is ok.
It is code for example.
var on = false;
setInterval(function() {
on = !on;
LED1.write(on);
}, 2000);
save();