ArduPlane autonomous takeoff and landing 

Ditto.

Thanks 👍

Thanks!

Thanks, I will. Lidar and airspeed sensor are planned...

Thanks! INAV is a good start! Also, keep in mind that you can run ArduPilot on many different flight controllers. You don't need a Pixhawk. Give it a try in the future :)

you can program in a flare on ardupilot i done it with a wing however to get that accurcy you may need lidar installed

I know ArduPilot has settings for a rangefinder altimeter. Maybe you don't need a full lidar but just a linear rangefinder laser. Ultrasound would be even cheaper (you don't need range if it's just to assist landing) but I'm not sure if it would be accurate enough.

I'd love to know and also how precise is the GPS sensor

Thanks. Yes, the landing gear if 3D printed with a couple of carbon fibre pods and RC car chock absorbers. You can find the landing gear on Thingiverse here: www.thingiverse.com/thing:4850791

Yes. I totally agree. All sensors are needed to get a reliable system. I have fitted the plane with both a downward-facing Lidar and an airspeed sensor now. Just need to do more testing and tuning...

@@AxelsDIY yep... I have had my pitot tube jamed during a flight... my 4G disco managed to land by itself with the gyros and accelerometers only, but it pissed me off. (I’m the kind of guy who prefer using stuff rather then building them... then the Parrot disco, with only light modifications: 4G cellular networks, batteries, stereoscopic 3D hud for fpv, independent tracking system).

Maybe your plane is too heavy or underpowered? Or the CG is wrong. Keep trying!

Look into KfM airfoils, lots of performance with just sheets of foam

You can now buy it. It's my own design. But you can 3D print the parts and built it yourself. Scroll down a bit on this page for the download link: axelsdiy.brinkeby.se/?page_id=1922

Thanks. Yes, it is 3D printed. You can see more and also download STLs on my website here: axelsdiy.brinkeby.se/?page_id=1922

@@AxelsDIY Thank you for answering me, I renew my congratulations again for your ingenuity. I'll take a look at the link.

Yes. It is possible to configure it that way. But I have mine configured to return home in case of signal loss.

Maybe you are making an approach that is too steep. The plane must be able to slow down and keep that slow speed during the descent. The plane should not have much energy left when the flare starts. Try moving the waypoint before the touchdown point further away making the slope shallower. You can also try to decrease the landing speed, but be very careful not to stall the plane. I think it is important to know the plane very well. Fly it manually and do a lot of landings to get a feel for how it behaves and what angles and speeds work best. It helps a lot while trying to adjust the autopilot parameters. Keep in mind that you can also look in the logs to see speeds etc when landing manually.

Next to the Pixhawk is a 3DR 433 Mhz telemetry radio module. It is used to communicate with the ground-station. The antenna I use is home-made. It consists on a thin metal wire on the front of the vertical stabilizer, and also metal wires acting as ground planes on the horizontal stabilizer. I have tried a few different antenna configurations. It is hard to get good range since I am only allowed to use 25mW power where I live.

@@AxelsDIY What kind of a range you get with it. We have the same 25mW max here in Funland.

​@@mil-fpv4931 About 500 meters clear line of sight, maybe a bit more. Enough to cover the entire area I fly over. That is using my own DIY dipole antenna on the ground as well. You can see that antenna in this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-48wrjNI0IZ8.html I have found that making my own DIY antennas gives much better results than using the stock ones that come with those radio modules.

Yes. That is probably possible. Check the ArduPilot documentation for "companion computers". That is definitely an advanced topic though. Make sure you have the drone flying great and you know exactly how it works first before you start working on that.

@@AxelsDIY alright, thanks a ton. I've been flying RC planes for many years now but never messed with ardupilot)

@@CBXrr thanks so much!

Thanks! I uploaded the landing gar design to thingiverse. You can find it here: www.thingiverse.com/thing:4850791

@@AxelsDIY thank you so much for sharing the landing gear files with us

Hello, boss, has the link sharing been cancelled? The link shows 404.

@@AxelsDIY Hello, boss, has the link sharing been cancelled? The link shows 404.

It is avalible on my website here: axelsdiy.brinkeby.se/?page_id=1922

Seriously? C'mon man.

The suspension is mostly because of the bumpy field. Vertical speed at touchdown is around 0.3 meters per second or less.

Yes, that was the first pitot tube. But it was not used at all in this video. That tube was connected with a long hose to the fuselage, where I wanted to place the actual sensor. But it did not work very well. I don't even think the sensor was installed for this fight. Take a look at this video if you have not already: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-48wrjNI0IZ8.html There you can see that the pitot tube has been replaced by a new one, and the sensor is placed very close to the pitot tube inside the wing instead.

@@AxelsDIY This is a joke, please don't be offended! I also had to lengthen the wires to the airspeed sensor, not the tube, otherwise the accuracy was poor. Landings of your plane are very, very good!

@@Alistratov1971 👍