Firefly Ultra sonic sensor and motors

Hi everyone.

I have problem that i can use this Arduino file in this link http://www.instructables.com/id/Reading-Ultrasonic-Sensor-Data-to-F...

to measure the distance by ultra sonic sensor but now i cant move the servo motors in the same file so can anyone help me for arduino file can connected with firefly to measure and move the motors in the same time.

I am waiting your replay as soon as possible, thank you in advanced