HI, I am having some issues with my collision sensors on my robot. I installed a Parallax sonic and ir sensor with a S3003 Futuba servo. The sonic and ir sensors are mounted on the same Plexiglas mounting bracket. Using Add Control to my ez-bulder software I installed the Radar Scan and Sharp IR Radar Controls. I have a couple of issues. First I set up the Radar Control. It worked perfect except my servo is jerky not smooth. Second when I went to set up my Sharp IR Control I didn't know where to plug it in since both sensors are using the servo to do their sweeps. My Sharp IR detector does not seem to work as the Radar Scan. I plugged it into both the Digital ports and analog ports on my controller. Neither worked. I really need help in the following items.
1. Why is the servo jerkily moving and what causes servos to jerk?
2. What do I need to do to make the Sharp IR Radar work?