APM 2.5 Bad GPS Pos. and a spinning HUD

Archive
1

I have two problems plaguing my hexcopter and my Y6 copter. They are:

  1. On my hexcopter with an APM2.5 I keep getting a report of Bad GPS Pos on the Mission Planner Primary Flight display while the HUD spins in random directions uncontrollably. At first, I thought my 3DR uBlox GPS with Compass was bad so I changed it for the on on my Y6; however, the problem persisted. I then installed the latest stable ArduCopter hexcopter firmware and that did not help, even after calibrating the GPS, accelerometer, RC radio etc. I am lost finding a solution for this problem. As a result the APM won’t arm when in stabalized mode or other modes I tried, just for trying. I need advice from the pros.
    Thanks in advance.

  2. Now, I have bigger problems on my Y6, on take off she flips, even before leaving the ground. I have an APM 2.6 installed. I push the trottle slowly to take off and she keels forward on her nose every time. Once again I re-install a stable ArduCopter Y6 firmware and the problem remains after all calibrations are done. She flew beautifully before and was as stable in flight as one can expect. I am using Afro 30A ESC. Again I need the advice and assistance from the pros. Can anyone share his knowledge with me on this problem?
    Thanks in advance.

2

Have you tried measuring the regulator just to see if it is fine?

youtube.com/watch?v=1q6jjha5rgU

On problem number two, have you tried the Motor test to check if the correct motor order is set on your setup?

copter.ardupilot.com/wiki/connec … th_the_CLI

The correct order should be:

  • Front right arm, top motor
  • Front right arm, bottom motor
  • Back arm, top motor
  • Back arm, bottom motor
  • Front left arm, top motor
  • Front left arm, bottom motor

Are you getting this order?