I have my managed to connect my navio2 board to mission planner via telemetry radios. Right now I just want to see if I can get the rotors turning so I am not super concerned about navigation or safety checks. All of the prearm checks have been disabled. Even with these checks disabled if I do Ctrl-F and click arm and takeoff it says it failed to arm due to bad compass health. How do I fix this?
Also, when I try to calibrate the compass via onboard calibration, I click start and nothing happens, even if I rotate the drone.
If you are just in the try and check process, it is better to use the Raspberry built in Wifi to do it.
You can bypass the arming checks. Do not forget to re-enable them before flying.
You do not need to use your main battery and power the motors to check Arming and monitor RC-Out. You can do that by powering the Raspberry with external source. Use your RC transmitter to Arm, move the power lever to middle and check the RC-Out. When happy with it you can move to the next step and power the main distribution board.
Use the Wifi link to calibrate compass and other components.