The throttle control during the stabilized descent and the subtle rotation right before touchdown are a joy to watch ! Congratulations! If you can make the time, I’d love a more in depth presentation of the setup.
As you like high tech, i recommend that you look at openhd (diy with raspberry pi for hd video and telemetry). I use it with arduplane and volantex 2400.
Amazing. I am setting up something similar and hoping I am able to get similar results eventually. Although this seems counterintuitive, in aerodynamics angle-of-attack is used to regulate airspeed whereas thrust is used to change glide angle. You can see when your reverse kicks in how the glide angle suddenly increases. I wonder if Ardupilot can use pitch to control airspeed instead of throttle.
ArduPilot is actually using pitch to control both airspeed and altitude. Parameter TECS_SPDWEIGHT controls how much. You can set this parameter to 2.0 to force the system to control the airspeed only using the elevator. This is useful on a glider for example where you cant use thrust at all. I think I have this parameter set to 1.0. Reverse thrust during landing is a special case also. It will always be a little bit unpredictable since it takes some time for the propeller to change direction.
Hi, incredible! Actually trying the same at the moment but I'm not able to manage the precision of the touchdown point. How do you do it? What is your TECS_LAND_SPDWGT?
Thanks. I have it set to 1. I have not experimented much with that parameter, but it does seem to work well for my plane. Sometimes my plane also lands a bit before or past the point, but it does not bother me. I am more interested in that the landings are good and predictable. The exact location of the touchdown-point is less important to me.
I have never tested either. But they both use the crossfire protocol to talk to the flight controller. So they will both work. I think Crossfire also has some kind of feature to send MAWlink telemetry which LERS does not have. I don't know if it is any good, you have to look into that. I suspect that a separate radio link to a computer is better anyway. I have so far only used FrSky ACCST with ArduPilot since I have several old X8R receivers, and I don't need a lot of range. I am not allowed to fly beyond line of sight here in Sweden anyway.
Around 12 degrees works reasonably reliable. Maybe steeper is possible. I have not pushed it. I don't remember exactly what angle I used in the video, maybe around 8 degrees or so. I can seen a lot of vibrations during high power reverse thrust, so that can be a problem also. I will make some kind of video showing more about my settings used in the future.
@@AxelsDIY The AP docs talk about 45 degrees approaches being possible with a good reverse thrust setup. Seems extreme but would be cool to play around with.
@@avsaase It is probably possible. But I think my motor/prop is not powerful enough for that. Also, a pusher-style aircraft is probably better, that way it won't have to fly through the turbulence it generates while using reverse thrust.
Regarding TFmini Plus LiDAR, did you use I2C or Serial protocol? Do you know if it was set as serial by default or I2C from the factory? Which UART you are using?
I notice that you are using QGC app with Ardupilot. Is it working out ok, last time I tried QGC with Ardupilot firmware mode mapping was all over the place? Also which telemetry module you are using?
The app works fine for me. The user interface is a bit fiddly I think on a phone. I run it on an older phone, not my primary one. A modern Android tablet is probably a better user experience. I Use a really old pair of original 3DR radio modules that I got for my APM system more than five years ago, still works great.
I assume you mean the flight controller. It is an old china clone Pixhawk 2.4. Any flight controller that can run the ArduPilot software can be used for something like this.
Please share the parameters for the flight controller, I have the plane built but having some issues with servo jitter or buzzing and also servo heating.
I plan to share the parameters since many have asked for them. But I am not sure if I have everything correct or if I have made any untested changes. I have not flown this plane the last 6 mounts or so because of the cold winter weather. I will probably try to fly it again soon though
I don't know why you have a servo problem, but maybe the problem is the servos themselves and not the ArduPilot system. I have not changed any servo related settings in my plane. Maybe you can test by disconnecting the ArduPilot and connect the servos directly to the RC receiver. See if they still get hot. Also make sure you don't have too much friction in the movement of your control surfaces, hinges etc.
Woh. Absolutely incredible. You’ve got that system dialed in perfectly
The throttle control during the stabilized descent and the subtle rotation right before touchdown are a joy to watch ! Congratulations! If you can make the time, I’d love a more in depth presentation of the setup.
Thanks! I will probably do that in the future. I few people have asked for it.
Great video
I bet that never ever gets old watching
This is the best balsa airplane i have seen,perfect lights perfect colour,this video made me think about arduplane
Please share your process in configuration and tuning. I love all your projects!
love that suspension
As you like high tech, i recommend that you look at openhd (diy with raspberry pi for hd video and telemetry). I use it with arduplane and volantex 2400.
Nice plane...simple design
Amazing. I am setting up something similar and hoping I am able to get similar results eventually. Although this seems counterintuitive, in aerodynamics angle-of-attack is used to regulate airspeed whereas thrust is used to change glide angle. You can see when your reverse kicks in how the glide angle suddenly increases. I wonder if Ardupilot can use pitch to control airspeed instead of throttle.
ArduPilot is actually using pitch to control both airspeed and altitude. Parameter TECS_SPDWEIGHT controls how much. You can set this parameter to 2.0 to force the system to control the airspeed only using the elevator. This is useful on a glider for example where you cant use thrust at all. I think I have this parameter set to 1.0. Reverse thrust during landing is a special case also. It will always be a little bit unpredictable since it takes some time for the propeller to change direction.
Hi, incredible! Actually trying the same at the moment but I'm not able to manage the precision of the touchdown point. How do you do it? What is your TECS_LAND_SPDWGT?
Thanks. I have it set to 1. I have not experimented much with that parameter, but it does seem to work well for my plane. Sometimes my plane also lands a bit before or past the point, but it does not bother me. I am more interested in that the landings are good and predictable. The exact location of the touchdown-point is less important to me.
Very well done.
Beau..ti..ful !!!!! Fan...tas...tik !!!!
great inspiration - is it better to use crossfire or elrs with ardu pilot?
I have never tested either. But they both use the crossfire protocol to talk to the flight controller. So they will both work. I think Crossfire also has some kind of feature to send MAWlink telemetry which LERS does not have. I don't know if it is any good, you have to look into that. I suspect that a separate radio link to a computer is better anyway.
I have so far only used FrSky ACCST with ArduPilot since I have several old X8R receivers, and I don't need a lot of range. I am not allowed to fly beyond line of sight here in Sweden anyway.
Hi ... nice project! Just curious where did you get that landing gears with schock absorbers?
wow! That was soo cool!
Very cool! What kind of approach angles can you safely use with this setup? And can you tell a bit about the settings you used?
Around 12 degrees works reasonably reliable. Maybe steeper is possible. I have not pushed it. I don't remember exactly what angle I used in the video, maybe around 8 degrees or so. I can seen a lot of vibrations during high power reverse thrust, so that can be a problem also. I will make some kind of video showing more about my settings used in the future.
@@AxelsDIY The AP docs talk about 45 degrees approaches being possible with a good reverse thrust setup. Seems extreme but would be cool to play around with.
@@avsaase It is probably possible. But I think my motor/prop is not powerful enough for that. Also, a pusher-style aircraft is probably better, that way it won't have to fly through the turbulence it generates while using reverse thrust.
Regarding TFmini Plus LiDAR, did you use I2C or Serial protocol? Do you know if it was set as serial by default or I2C from the factory? Which UART you are using?
Did you figure this out bro? I am having trouble too haha
Design plane ....nice
very nice
did you use ardupilot and a matek digital air speed sensor ?
I notice that you are using QGC app with Ardupilot. Is it working out ok, last time I tried QGC with Ardupilot firmware mode mapping was all over the place? Also which telemetry module you are using?
The app works fine for me. The user interface is a bit fiddly I think on a phone. I run it on an older phone, not my primary one. A modern Android tablet is probably a better user experience. I Use a really old pair of original 3DR radio modules that I got for my APM system more than five years ago, still works great.
Very Nice
Can you please post a videos how to make one?
Hi. Do you mind sharing the configuration and setup used to get the rangefinder working, i cant seem te get mine working on the orange cube.
how can you setup this ! the GPS realy need Compass right ?
what controller are you using on it ?
what controller are you using in this model airplane?
I assume you mean the flight controller. It is an old china clone Pixhawk 2.4. Any flight controller that can run the ArduPilot software can be used for something like this.
Please share the parameters for the flight controller, I have the plane built but having some issues with servo jitter or buzzing and also servo heating.
I plan to share the parameters since many have asked for them. But I am not sure if I have everything correct or if I have made any untested changes. I have not flown this plane the last 6 mounts or so because of the cold winter weather. I will probably try to fly it again soon though
I don't know why you have a servo problem, but maybe the problem is the servos themselves and not the ArduPilot system. I have not changed any servo related settings in my plane. Maybe you can test by disconnecting the ArduPilot and connect the servos directly to the RC receiver. See if they still get hot. Also make sure you don't have too much friction in the movement of your control surfaces, hinges etc.
Could you pls share your project? I am very interested in
Which ESC do you use?
Aikon AK23 35A BLheli32. But any BLheli32 or BLheli-S ESC would work for reverse thrust.
Would you share the STL for your nose gear?
The landing gear is on thingiverse here: www.thingiverse.com/thing:4850791
Hello i iwant build this plane i need plans
DIY !