I know I'm reviving an old post, but I'm almost done doing this project on an Ardunio. The only reason I'm using an Ardunio is I don't have a MP3 player that will work as easily.



Anyway, I have all the electronics in place, but I don't know how to get the servo to stop in the same place every time. I'm considering a stepper motor, but I don't know if it will have enough torque. Also I think using a stepper motor will make it hard to use batteries for this project.



http://forum.arduino.cc/index.php?topic=234273.msg1696696#msg1696696



Please help. I'm trying to get this done for my son's birthday in July.



