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  • adrianio commented on amandaghassaei's instructable Arduino Audio Output6 days ago
    Arduino Audio Output

    Hello! Nice tutorial. I want to make a low-pass filter like you for Arduino toneAC(). With toneAC, we're sending out of phase signals on two pins. How will I connect the resistor and capacitor? I need two resistors and two capacitors connected between every pin and ground? Or is sufficient one resistor and one capacitor between one pin and ground?

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