problema accensione arduino

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buon giorno e buon anno
scusate ho un problema sto facendo dei software dove ho delle uscite
che dovrei attivare quando ho elaborato la mia equazione esempio
un imput

la cosa che mi succede e' che al momento che do' tensione ad arduino
le uscite vannop 1 , si puo' eveitare questo anche perche ho delle uscite
che sono dei buzzer

vi ringrazio 

nel setup, oltre dichiarare esplicitamente che un deteminato pin è una uscita digitale (pinmode) puoi anche settare low la stessa uscita (digitalwrite).


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