Arduino newbie here, so this question might sound too simple. I am trying to run a parallax continuous rotation servo using Arduino Uno. From the reference, I learned that the servo needs to be "attached" to one of digital pins with PWM capability, and the servo's speed can be controlled by
But I am having a hard time understanding the role of the PWM digital pin. If the servo's speed and direction of rotation is determined by
write(), what is the role of
Thanks in advance!