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Hi-

I am having similar issues. My setup: Ubuntu 14.04, ROS Indigo, 3DR X8 with PX4.

I am running:

$ roslaunch mavros px4.launch

$ roslaunch mavros_extras teleop.launch

I am trying to arm the quad. When I press [2] to arm, I do not get any debug messages or response. When I pressed [0] or [1] to takeoff/land, I get a command received, request failed. My joystick is working properly and I can arm/disarm using the RC controller. Is there another script that needs to be running for teleop mode using a joystick? Or perhaps a dead-man switch? Maybe a setting in a yaml or launch file?

Thank you for any assistance.