I have been given this arm:
It consists of 4 servos, which need to be controlled individually.
Can I control them using Gertboard? Gertboard has only one motor driver, but it also has several open collector ports and buffered outputs.
I know Raspberry Pi itself can control a servo through a PWM pin and that you can emulate PWM on any additional pins. How do I do it safely via Gertboard? Should I use buffered pins? Won't servos blow my Pi or Gertboard up?