MB1240 in ArduCopter 3.3

Hi All,

I'm trying to get the MB1240 sonar to work via the ADC 3.3V port on the Pixhawk. I cannot get it to work. 

The wiki is also very confusing:

"Copter:
These instructions are for Copter 3.2 and later versions of Plane, Rover.  Setup instructions for Copter-3.1.5 (and earlier) can be found here.
"
Which makes me believe it will only work in Plane and Rover in 3.2 and up and NOT in Copter. 
Anyone have any idea? I have 4 of these sensors laying around and really like to being able to use them, now that I have upgraded to Pixhawk....
Thanks!
Alex

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