Troubleshooting 2.7.1 with ArduIMU+

I'm looking for some ideas as to why my system isn't quite working.
Background / specs:
  • Super Cub with LiPo
  • ArduPilot + ArduIMU+ v2 + Pitot Tubes
  • On starting, I make sure the plane is at flying-level position.
  • Air start is enabled on the IMU.
  • Telemetry shows the plane is level on the ground and is receiving data.
  • Using a CC Phoenix 35 ESC with built in BEC.
  • I have waypoints programmed into the ArduPilot via the Config Tool (successfully).
  • I set the altitude of the waypoints to 400 ft, so it should not be trying to drop altitude when the telemetry is showing about 180 ft.
  • GPS fix is also OK

Some issues:
  • In manual mode, the plane flies fine. It's a little tail heavy.
  • As SOON as I turn on Stabilize or Fly by Wire A, the plane starts heading towards the earth in a 45 degree nose dive.
  • It seems like I get throttle/power issues after I change from/back to manual. Almost like the motor quits in the air. It's apparent that the motor is still on though when I switch because the plane descends more rapidly than without the motor on.
  • The air speed from the Pitot tubes seems to be off... when I use the GCS beta and I'm idle on the ground, the airspeed is 50+ mph while ground speed is 0.
Additional questions:
  • Is Fly-by-Wire A supposed to follow waypoints?

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Replies

  • From my limited experience Fly by wire does not follow the waypoints.
    You have to get Stabilized setting right before you try to do any thing else
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