Arduino - Using Servo Motor via the shield for a Pan-Tilt

Motor shield can connect two servos.  The marked locations on the shield are actually the reroute of pins on arduino, for convenience:

• servo 1 is arduino pin 10
• servo 2 is arduino pin 9

Yes, reversed. 

Expected value for the analog write ranges from 0 to 180 degrees, when using the servo library.

Example code can be found at
Arduino - Servo

I use them on a pan-tilt, works fine.

stack the joint before mounting the servo

use this little screws on the arm