INAV Troubleshooting - Quick List

1. Flight Control Board Assembly - Take care when soldering. Look for solder bridges, reverse polarity connections and bent pins. Check voltages with a multimeter.

2. Connect the board to INAV via USB - If the board is not detected make sure the required USB drivers are installed on your computer.

3. FIRMWARE - Make sure you are using the correct firmware target for your board. 

Don't guess, check the FC documentation. 

eg. SpeedyBee F405 Wing Mini does NOT use the SPEEDYBEEF405MINI INAV target

4. Check that the animation moves the same way as the board when mounted in your plane.

Set FC orientation using the Alignment Tool.

5. MIXER - Select your Platform Type and Mixer Preset to load motor and servo mixing. 

IMPORTANT - Don't do any of this mixing in the radio. The FC takes care of all the mixing.

The radio must only have the basic INAV MIX, no matter what sort of craft you are flying. 

INAV MIX for the radio. 

Ch1 100 AIL

Ch2 100 ELE

Ch3 100 THR

Ch4 100 RUD

Ch5 ARM 

Other channels for flight modes

6. OUPUTS - Enable Motor and Servo Output
Choose ESC Protocol and Servo Refresh Rate. Use STANDARD and 50 Hz if they are unknown.

You can check if the motor works and calibrate the ESC using the sliders on this page.

7. PORTS - Enable a UART for Serial RX (Also GPS and FPV if required) Only one UART for each.

SBUS Rx with F405 boards require Serial RX to be on UART2.

8. CONFIGURATION - Turn On "GPS for Navigation and Telemetry" (if GPS will be used)

9. FAILSAFE - Only set as RTH for GPS setups.

Arming will be prevented if RTH is set for a non-GPS setup.

10. RECEIVER - Connect the receiver to the Serial RX UART 
Choose the Channel Order for your type of radio. AETR is most common
Choose the Serial Receiver Provider for your receiver - CRSF for ELRS, SBUS for SBUS etc.

Channel bars for Roll, Pitch, Yaw and Throttle must move to the RIGHT when moving the radio sticks UP and RIGHT.
Also check that all your mode switches show a response on the relevant channel bars

11. MODES - Configure Modes and assign to channels. 

ACRO will be active if no other mode is selected. 

12. ARMING PROBLEMS - Read the Arming Flags along the bottom of the INAV window and in your FPV goggles. Also in the CLI, type STATUS for more clues.

Arming is only possible in ACRO, ANGLE or MANUAL modes, and GPS must have acquired at least 6 satellites and a 3D lock.

To bypass the Arming Flags, hold the throttle stick down and yaw right while arming. 

BEWARE this is for troubleshooting only and is not a safe flying condition. 

Disconnect the battery to clear Arming Flag bypass.