Your question does not make sense. PWM = pulse width modulation. The frequency is fixed. The pulse width is what varies.
In addition, a PWM frequency of zero would require running the board in a dimension that does not exist for us.
Your question does not make sense. PWM = pulse width modulation. The frequency is fixed. The pulse width is what varies.
In addition, a PWM frequency of zero would require running the board in a dimension that does not exist for us.