I have an ultrasonic sensor SR04
the way it works is: you send a pulse on the leg, then it will send 8 ultrasonic waves, wait for echo, and then output a pulse on the same leg, the length of the pulse defines the distance measurement.
(you see trig and echo legs, but it can use one leg as both functions)
my question is - can i use this sensor for the arducopter ?
do all arducopter-official sonars works with the same protocol ?