Quote:
Originally Posted by Alan Anderson
Or the multiple sensors will interfere with each other and make the problem worse. If you really want to run several ultrasonic sensors, you're probably going to want to wire them so they aren't all pinging simultaneously.
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Naturally, you'd like to do this in any case, whether they're facing the same direction or not. Multiple sensors in close proximity can have interference regardless of direction if you let them fire off willy-nilly.
Could you define, angle? They'll work in any orientation; Because of the acoustic cone, though, they'll detect any object, be it the hoop or not, along the path that the sound wave.
For certain models (the ones with the cone around the sensor), the acoustic cone is very narrow, and so it's effectively a long range line detector. For the ones without the cone, it's rather useless as-is unless you add your own custom cone to focus the sound wave, because the wide cone will probably hit the bridge or barrier and bounce back first.