i have just received my new pixhawk autopilot but i have many problem during calibration process.
In detail i have installed the last ArduPlane firmware (v3.2.0) successfully but every time i try to calibrate the accelerometer (initial setup/Mandatory Hardware/Accel Calibration) i got always the “calibration failed” message. I have done that procedure dozens of times and in different way but nothing is changed.
The autopilot isn’t still placed in the airplane and during the calibration i hold it in position on a my desk, so absolutely no vibrations could interfere in the calibration.
I’have tried to install also qgroundcontrol firmware to check the health status of the board and, with may difficulties, i finally could get a good acc calibration. I have also tried to use directly the USB cable or using lipo battery to power it and radio link to pc connection in order to avoid usb connection fail but i got always the same message.
An other problem i have found is about terminal connection: every time i try to connect trough terminal i got only random char mixed at some meaningful message. i thought that was a baudrate problem but also using others baud the problem persists.
I have no more ideas, i’m just thinking my pixhawk is broken.
Someone of you have different ideas.