According to appendix E, VEX U is allowed custom sensors. PIXY is a camera that we have found to use as a custom sensor. PIXY also has a pan/tilt kit that utilizes 2 non-vex servo motors. Would this pan/tilt kit that only functions with the camera be considered a part of our custom sensor, making the whole assembly the custom sensor? Or would this be an illegal part? Or would this count towards the 12 motor limit?
Yes, these would be considered one single custom sensor unit.