This should be a sort of a head (my first idea was a skull of a dinosaur, but this is difficult to find)
...is this your first day on the internet?
...OTOH, I keep thinking I could do it all with 2 wide-beam sonars [40-deg each], and mount them so as to have a small degree of overlap on the center edge of the beams. That way, only one sonar would pick up an object moving in from the periphery, and would trigger the servo to move them until both picked up the moving object simultaneously. Then, asthe object moved around, it would move out of one of the beams, and cause the servoto move to track it. ...
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