I just moved my Pixhawk from one frame to another, and now I am having trouble getting my Pixhawk to function.
When it boots up, I get the ‘Startup Failed’ Tone (link to sound). However, I have found out that if I unplug the magnetometer from the Pixhawk, it boots fine. If I look at the BOOT.txt file on the SD card, the only thing I find is ‘hmc5883 calibrate failed.’
I have tried re-flashing firmware both through the wizard and Install Firmware menu of Mission Planner 1.3.5. Both times, it was flashing ArduCopter V3.1.5 Hexa.
This is all with the following hardware:
Pixhawk autopilot (purchased Jan 2014),
3DR ublox compass/gps unit
3DR 915MHz radio set
3DR power module
FR-SKY D4R-ii Rx in PPM mode
Any help would be much appreciated.