On Pixhawk and all other flight controllers based on PX4, like HKPilot32 or AUAV-X2, you should press the safety switch button before arming. This is a safety feature and its recommended to be enabled. If you don’t need this feature, you can disable the safety switch. Open Mission Planner, connect the Pixhawk and go to
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Here I will show you how to connect your ArduCopter based flight controller with Mission Planner over Bluetooth. I used a HC-05 Bluetooth Module, which I bought for some Arduino projects. First you need to change the default baud rate of the Bluetooth module to 115200. Note: If you are using the MultiWii and MegaPirate
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