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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.
@Andrey
Thanks, Gordon
I guess, that the oscillator is the reason. Flashing process need no oscillator, but after loading Blue Led is in strange "half-on" state. Seems to chip doesn't start. Think I have to change the oscillator.