- 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
- 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
Today a very popular topic: how to setup INAV on a flying wing – level intermediate.
Let's take a look at:
- INAV mixer configuration
- motor and servo refresh speed
- gyro settings
- flight modes
- basic PID (or PIFF) tuning
- some tips and tricks
What are Motor Stop and Airmode features in INAV and how they differ from each other when used on multirotors and fixed-wing airplnes? Should you use Motor Stop on multirotor? Should you use Airmode on a fixed wing? Long story short:
- On multirotors, Motor Stop not recommended to use while Airmode is recommended to use. More than that, you can not use them both at the same time, since they exclude each other!
- On fixed wing aircrafts Motor Stop and Airmode are highly advised to use together.
What to do when Matek F722-STD flight controller is not booting without connected battery and connection from Configurator is not working? Simple, power GPS and magnetometer from a different pad.
All 5V pads are powered only when external power is supplied to the flight controller. Not when power is applied via USB cable. If you connected GPS and magnetometer to 5V pad, it will not work and screw I2C bus up. To solve this problem, connect GPS to 4V5 pad instead!
FrSky is not making things simple with R9 long range system. New firmware appears quite often and there is no way to flash receivers over the air. You can use some PC software, passthrough from FC and things like that, but from my perspective, as long as you can get to the receiver itself, the simplest way to flash R9 Slim and R9 Mini is to actually connect them to Taranis or Horus and do it from the radio itself. How? Like this!
Let's get our hand dirty and fix an old power bank. I got this thing a few years ago but recently it died. Li-Ion 18650 cells inside just died and now it even can not do a full charge of a smartphone.
What we will do over here:
- get this thing apart
- solder together 3 18650 batteries I got for cheap from disassembled power tools battery packs
- I will be coughing after inhaling too much of soldering acid fumes
- have a nice talk about a zombie apocalypse, nuclear holocaust, communism and Kapton tape
- get things done!
INAV 2.0 changes a lot. Including OSD. One of the new functions is something called "OSD Profiles". You can set up 3 independent OSD layouts to radio switches and change them during flight. One OSD profile can display all the data, second one minimal set of data and the third one Map or Radar mode.
Autotune (or Auto Tune) that is present in INAV for quite a long time is a working solution for tuning PID (or rather PIFF) controller used by INAV on fixed wings (all airplanes, flying wings). Not like all the attempts designed for multirotors, this one actually works.
INAV Autotune can be used on any airplane and is fairly simple to use as long as you follow a few simple steps:
If you really really want, you can solder without flux. But it is a painful experience. Almost all modern solders have flux integrated into its core. And as long as you do not try to solder anything big, it's enough. Of course, sometimes it is not enough and you have to help yourself with additional flux.
My favorite solution lately is a flux pen. Like Stannol x32-10i