I built a hexapod using this person's code, but I noticed that he uses digital servos and I use analog servos (I didn't see this before.) I have never got mine to work. The only thing that it does is when I power it on, the servos go to the center position. I can get the LED on the joystick to come on, but that is it. Does it have to have digital servos to work? The servos that I use are Hitec HS-322HD. Thanks...