Due and Ultrasonic

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i working on project needs read in 4 ultrasonic sensors.  using rc channel passthrough , using ultrasonic ranges change passed pwm signal flight controller.  have passthrough code working fine.  need know couple of things.
best ultrasonic sensor use due , there libraries ultrasonic sensors yet.  know newping 1.6 supposed written parallax style sensors, have in abundance.  order maxbotics sensors if have to.  know need use voltage divider input bring ping sensors down 5v 3.3v input due. 
pretty stuck here, been searching internet awhile , either not phrasing search correctly or google hates me lol.



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