The Ultimate Fixed Wing Tuning Guide for INAV

Today, step by step, tuning guide for all of you flying fixed wings (including flying wings) with INAV onboard! No, I will not give you a magical formula: put this here and it's done. It's a real step by step list of what you have to do to tune your fixed-wing airplane. Starting from the center of gravity, rates, servo trimming and finally tuning vital INAV parameters.

How to setup INAV 2.2 on 7-inch quads – PID tuning

INAV 2.2 is with us and it brings a series of cool improvements that should make all owners of mini quads very happy. Those are:

  • Improved Airmode that is more suited for small and powerful drones
  • Iterm Relax that allows getting rid of bounceback at the end of flips and rolls
  • D-Boost allows having cold motors and a lot of Dgain when doing fast maneuvers. It's an equivalent of D_Min from Betaflight
  • Configurable gyro stage 1 filter type: PT1 or BiQuad
  • Faster D-term filtering
  • and a few other goodies
    In this video, I will show you how to set up INAV 2.2 for 7-inch quads to get the best flying experience possible.

INAV 2.2 – what’s news, what changed, the most important features

INAV 2.2 is almost ready. The list of changes is long, those are the most important ones

  • STM32F7 optimizations. F7 flight controllers are now as fast as F4
  • Better airmode handling for multirotors
  • Betaflight D_min equivalent called D-Boost
  • Iterm Relax
  • Smart Audio 2.1
  • New Mission Planner
  • Continue mission on failsafe
  • waypoints in CLI
  • stick arming removed
  • DSHOT compatibility fixes
  • Blackbox servo logging
  • Emergency arming
  • G force in OSD
  • OpFlow and Surface mode improvements
  • Virtual airspeed (pitot) sensor

How to setup INAV on a flying wing – video tutorial – GPS, Baro and Compass

  • Do you need a barometer on a flying wing with INAV?
  • Do you need a compass/magnetometer on a flying wing?
  • How to set up a GPS unit and which protocol should you use?
  • Do advanced tuning and set up a return to home, banking angles, landing procedures etc.
  • Configure the most important GPS related flight modes: PosHold, AltHold, and RTH
  • some extra tips and tricks like Galileo support for GPS

INAV and Failsafe – especially for FrSky owners (but not only)

  • You should not trust a guy on YouTube that says that he knows it all
  • OpenTX “no signal” is not the best failsafe setting when FrSky S.BUS devices are used and why
  • Than “Hold” failsafe setting might actually be a better option when S.BUS is used
  • How to setup Failsafe in INAV to have the best experience and safe flight

Flying R2-D2 or SpaceX Falcon 9? Both – RC coaxial dualcopter

The second generation of my 3D printed coaxial dualcopter is here! And this time it works almost as I wanted.

3d printed RC coaxial dualcopter

Just watch the video

On the more technical details:

  1. It runs INAV 2.0 with a custom mixer
  2. Thrust and yaw control is provided by 2 counter rotating propellers
  3. Upper motor is 2205 2300KV with 5×4.5×3 propeller rotation in CW direction
  4. Lower motor is 2205 2600KV with 4×4.5×3 propellers rotating CCW
  5. Control surfaces are rotated 45 degrees from the long axis to fit servos
    flight controller is also 45 degrees rotated
  6. Any 9g servos will do
  7. runs on the 4S battery that has to be on the top of the device
  8. All 3D printed parts can be downloaded from Thingiverse

Required parts:

  1. 2205 2300KV brushless motor
  2. 2205 2600KV brushless motor (2300 also will do but will have less yaw authority)
  3. 5×54.5×3 propeller
  4. 4×4.5×3 propeller
  5. 2 14mm carbon pipes (12mm internal diameter), each around 270mm long
  6. 2 2g servos
  7. 3M bolts to secure the motors
  8. good adhesive tape to make control surface hinges
  9. pushrods
  10. hot glue
  11. flight controller compatible with INAV
  12. radio receiver

3d printed RC coaxial dualcopter

It’s time to start to think about INAV 2.1 – DSHOT and braking mode

It's time to start thinking about INAV 2.1. No, I will not give you any timeline, but I can point two features that are very likely to go into the upcoming INAV release.

The first one is Braking Mode for multirotors. I already made a video about it, so you might want to watch it first. Right now there is an open test phase for this feature made as part of my fork of INAV. If you want to test Braking Mode, please visit this page and download the hex file for your board.

On top of that, it's very probable that DSHOT will finally make it to INAV too! DigitalEntity started to tackle with the DSHOT implementation so yes, this is finally happening for INAV!