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If pypilot fails to run properly, it is possible to get much more debugging information.
First completely disable the autotpilot from the openplotter gui.
$ ps aux | grep python
Make sure there is no pypilot running. You can usually kill it with
$ killall python
Take care because this command will kill all python processes
Now, to test only the imu sensors to ensure they are working correctly
You should see pitch roll yaw working. Stop with Ctrl-c
To test the motor controller
You should see voltage current etc. Stop again with Ctrl-c
If there are still no errors the autopilot should be working. Leaving this command running, in another terminal try:
$ pypilot_control $ pypilot_calibration
If these fail to connect for some reason, pass them 127.0.0.1 (one time should be enough after that they remember)
$ pypilot_calibration 127.0.0.1
Report any errors or issues to the forum