• A0 pin connected to nowere produced to many "noise"

    The pin mode should have been set to input_pulldown by the code? Something seems very wrong if you're getting inputs from it still. What if you upload just:

    pinMode(A0,'input_pulldown');
    setWatch(print,A0,{repeat:true});
    

    Do you get anything on the console?

About

Avatar for Gordon @Gordon started