TauLabs/TauLabs — pull request #612 by scenkov (2013-06-08 12:58:06+00:00)
Title: Sonar module HCSR04 refactoring

HCSR04 task is running at 100ms.
Tested with FlyingF3 and Vrbrain.
To trigger and echo I used RC-In CH7 and CH8.
Next step add sonar in AltitudeHold module.