I have recently added Sonar (EZL0) to my HexaCopter which is a 3DR frame and the standard sonar mount.
However my Hexa also has skids fitted and the sonar is constantly measuring 20cm.
Although the sonar can see the ground, i'm guessing it could also be seeing the skids.
Can sonar be calibrated or the beam changed to ignore the skids.
Many thanks for any advice.