AWOL
Believe it or not I finally got there! What Zoomkat and yourself told me about the fact that is not necessary to remove the pot made a big difference to me. I just got a normal servo and removed all the gears, and without touching the electronics I got the motor of the servo turning continuously to one direction and then to the other as instructed.
The only thing remaining is why I can´t use the serial monitor feature. When I open Tools in there Serial Monitor is greyed out. It's set to port 6 but as I am uning an Adafruit motor shield in the codes I put "myservo.attach (9)". So I think I should change serial monitor from port 6 to 9 to be able to see the values. Am I right? But as I mentioned, serial monitor is set to port 6 and greyed out. All in all, I can download the codes but I can´t see the values when the servos are running.
If you also know something about this particular subjet please let me know. Many thanks!