sorry for my bad English. But I need some help. I want to control my servo motor 'SG90' with the frequency. I'm using the 'delay' function to control the speed of the servo motor, but it would be better to use the frequency. My idea was to transform the frequency (for example 200 Hz) to the period time (t = 1/200s = 5 ms; dividing by 180) and to use the 'delay' function (like delay(5/180)). But the servo motor does not react as I want. How is it possible to use the frequency and that the motor should move smoothly?