Quote Originally Posted by cncmachineguy View Post
Ken is worried about firing both sonars at the same time cuz he may not know who the source is when it comes back.
Ken was thinking smarter than I. Good point. Maybe keep your sonar for front view, and for side view something like this: http://www.acroname.com/robotics/parts/gp2y0a21yk_e.pdf . Or use infra sensors for both, since you can get updates every 20 ms to keep up with the fastest that you can change your servos. Besides, they are cheaper than sonar! You do need to pick your distance range though. The one I gave a link to was 4 inches to 30 inches, which seemed ok for following a wall. If its 30 inches or more, get closer....