I'm using the head of the Arducopter release since I require boat support. After an hour of sending guided waypoints to the copter using the msg_set_position_target_global_int msg where I supplied position (lat, lon, alt) and horizontal velocity information, the copter shot up 4 meters and then came back to eventually. The ground station was not moving the entire time and the altitudes it sent up were smoothly varying based on barometer drift only. I reviewed the log file and noticed that error code 58-38 showed up right before the glitch in the altitude. (I'll upload a screenshot to illustrate.)
Anybody know what would cause the error? I searched the Ardupilot code, but didn't find where that error came from yet.
Thanks!
Rob
Here's the version of the firmware I was using:
http://firmware.diydrones.com/Copter/2016-02/2016-02-01-01:02/PX4-hexa/ArduCopter-v2.px4
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