A father-and-daughter team wants to control servo motors using PWM (Pulse Width Modulation) on the Raspberry Pi. As a demonstration of how possible this is, they’ve started out by using PWM with an LED to fade it up and down. To do this, they’ve used the Occidentalis distro from Adafruit (although this was probably overkill as you can do similar on plain ol’ Raspbian).

Read about their experience here.