(4) pan-head screws, 1/4″ 4-40
(1) Board of Education Shield mounted to your Arduino module and secured with standoffs [1].
Using Different Pins for the Servos
The Arduino toggles Pin 13 briefly upon startup or reset. If this causes problems for a particular application, you can use Pins 11 and 12 instead of 12 and 13. Be sure to adjust your code accordingly.
If you are building the BOE Shield-Bot to use with ROBOTC instead of for this tutorial, follow these instructions for using different servo ports [2].
Links
[1] https://learn.parallax.com/170
[2] http://learn.parallax.com/node/359