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- เผยแพร่เมื่อ 28 ก.ค. 2024
- Thanks for all the comments and suggestions :) Although I might have made it sound like a huge ordeal, overall there really wasn't all that much to be done, to get a basic build up and running. Looking forward to more tweaking and twiddling, although I might need a bigger plane because this one is bursting at the seams...
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"This is just impossible to crash" Famous last words :)
holy fucking god... the fly at 19:06 scared the shit out of me... its a about 3cm² on my screen and since its winter here in Sweden i definitely thought about mutation...
Explanation as to why some controls can be reversed in 'auto' modes but right in manual: Arduplane knows which way is up (as confirmed by the artificial horizon), but it doesn't know which way you've coupled up your elevons - you could have connected the push rods to the opposite side of the servo output arms and then they'd work the opposite way. You then set your radio transmitter to make them go the right way when in manual, but that still doesn't tell Arduplane which way the controls have to move for 'up' - when you pull up elevator on the stick, all Arduplane sees is a changing receiver input - for all it knows you could be pushing down! So the final step is to rock the plane around and check/possibly reverse the control outputs.
This could be done better in Mission planner. What would be needed is once you have the controls going the correct way in manual you'd go to a new set up screen and be prompted to move each control in turn: Apply up elevator, apply left aileron, apply left rudder, apply full throttle, and so on... But we don't have that facility right now.
I think rocking the plane around with the autopilot on should really be standard operating procedure when using any kind of automatic stabilising system, just as important as checking your control surfaces with your radio before a flight. After all, a loss of control will probably make you hit the ground eventually, but a confused autopilot will be actively trying to turn your plane into a lawndart.
An example of what can happen if you don't do this: th-cam.com/video/ECrfR4BeL60/w-d-xo.html
He launched in manual mode, then activated the automatic stabilisation which flipped his plane upside down and then applied full up elevator straight into the ground. Turns out the roll axis was reversed somewhere.
Good thing your laptop isn't touchscreen and you ended up with 'fly by fly' waypoints :-)
Can't wait to see the next 2 videos.
Thanks Chris.
So glad you got it working! Now just never go back into mission planner haha XD
Well done - I have to do exactly the same with my Opterra Wing. Always have to reverse elevator in the TX.
Good job you should be pleased you figured out the servo puzzle, also super first successful mission. I think I saw the max angle of bank in fbwa can be set in parameters.
Nice! If you want to use more flight modes, you can mix channels of switches to reach all 6 pwm ranges
Masha Allah very good for newbies to APM/Pixhawk and good revision for the oldies 🤓
Thanks for the ride along your mini pix journey. (I have one on the way) Now that you're an expert in this, you should make a single short video about setup from start to finish.
I like INav for my FPV short range wing. I really liked my APM CX20 with all the mods, OSD, FPV, Telemetry. M8N. I also placed a F3 with INav on the CX20. Crashed both systems due to newbie mistakes. APM by descending down through its wash, flipped and raced upside down to the only concrete around. Wild FPV ride with no input able to right it in the few seconds I had. Failsafe worked well when I lost signal once.
After that I had several good and fast flights with the INav CX20. But I disarmed it at about 20 feet and crashed on to a parking lot. Both systems needed tuning with each having certain rpm vibrations and wind effects. The FPV was great with Banggood 5.8tx and $18 security camera on a cheap servo gimbal that also carried a mobius with good video.
I have purchased the Radiolink package here and will decide what it will fly soon. I am thinking about a tailsitter wing with a gimbal that swings level whether in hover or forward flight. Also with a good bit of EPP to protect it all from the inevitable.
Thanks so much for sharing your projects in such a fine way!
More autotuning (or some manual tweaking of the PID values) plus editing the maximum allowed bank angle, is required if you want to get tighter turn radii - but it's best not to try to make it too tight in my experience.
Dude, this fly! I was one sec before smashing onto my screen. :D
Nice one dude!!
Well done sir you've made this little Aussie one happy camper. Thanks for a simple explanation and walkthrough without all the stuff the hobbiest wont use. We just want to fly do waypoint missions and return to home. You sir are a true rc Legènd.
Great work youve given me the confidence to dig out my pixhawk and try again after giving up as there is no GUI for setup. And needlessly confusion.
You keep bagging Inav. But have you tried the new Inav Air3 set purely for plane? Its gps is spot on and the GUI is so simple its fantastic. The error margin is like less then 1/4 of Pixhawk now. With the development going into inav Air3 i wouldn't be surprised if it over took pixhawk. Especially as pixhawk cube and stuff are pricing themselves out of the hobby market which is a shame.
Back to you though. I take it these settings work on other pixhawks? You do know you are the only one I have seen after 1000s of hours who does a proper uncomplicated walkthrough thank you sir. Now my confidence is high I will actually try to get my pixhawk off the ground.
As for price I got the bells and whistles $200 $AU a year ago now kicking myself.
As for Inav as soon as they have 2 way mavink I feel for $90 AU because of their UI people will turn to them due to price and speed of development. A half day to get Inav in the air a year and your helpful setup videos to get hawk in sky.
New there had to be someone who could use plain language to get the pixhawk working and you've kicked the butts of painless 360 and many other who made it so technically difficult you wanted to shake them when they promoted their vids as first timer easy setup. Totally missing the easy part.
Thanks again.
well done :)
Well done.
Awesome!!
I'm so happy for you!
How do you arm the from the remote
Great!
Hi, does any of you guys know how to configure the APM 2.8 on this type of aircraft? I can't see delta wing config in the wizzard MP. Any suggestions?
Great! How can you trim the craft so well it just flying by itself in manual mode? :)
ardupilot is actually pretty good at guessing wind speed and direction without an airspeed sensor. If you do a few laps it somehow calculates it based on throttle percentage and ground speed assuming if similar throttle but less ground speed then you are flying into a head wind.
Yes, I have noticed that after some more time in the air. When I increased the loiter radius to 80m the circle drawn on the map is very good.
Chase it! victory laps.
How did you fix the problem with RTL? Was it just the issue of servo selection in GS when you changed them over? Before I take off Id like the safety of RTL.
CHEERS
I had to reverse the pitch channel in my radio, and fiddle with the left/right assignment for servos again. Switch into FBWA mode and check that all the control surfaces move as they should before flying.
iforce2d thanks sorry for late reply. Lastly how did you reduce the battery usage. You said at one point in one video that it was drawing alot of amps or using battery quickly?
Be great to see you and Mr Newton fly together one day.
A thumbs up from me my friend
Hi, loving your build vids lately, im almost ready to maiden a S800 SkyShadow with iNav in the next few days, i was just wondering, I know its not the same system, but how are you connecting to your wing via pc while still in flight?
Alex Walpole he's using mavlink but I think it only works with apm and pixhawk I tried it with inav but couldn't get it going
hmm typical, i guess bluetooth is the best im going to get? if thats possible?
mavlink can have range of a couple km but bluetooth is only a couple meters
but like you say if mavlink doesnt work with inav then bluetooth is my only option isnt it?
you could buy a pixhawk in my opinion inav is a lot less scary and easyer for basic gps modes but apm and pixhawk is better for more advanced things and more accurate
Can i flash arducopter on omnibus f4 pro v2
yes
How about increasing the control surface throws and repeating the mission to see if the turning radius is smaller.
There are tons of settings I can tweak which I will take a look at next. I think for tighter turning radius you can increase the maximum allowable bank angle.
Slow down as well
Nice! Try a longer autotune and stall it in manual several times to note the speed and then set just above that in your mins. Similarly, see how fast it goes flat out and make that the top of the range. Then work out your cruise. I think from the sound of that motor you are flying a few m/s too fast so you can claw back some endurance by optimizing that. Then its auto take off and autoland... The pitot is just something to break, tune it better and I think you will be surprised.
Yes it did seem to be laboring the motor a bit more than necessary most of the time, and the current draw was higher than I expected too. I suppose increasing the loiter radius would let it stay more level while circling and require less throttle for that too.
Surely the pitot does more good than harm though? I mean if I set the min speed based only on ground speed on a calm day, and it then tries to fly at that ground speed down-wind on a windy day it might stall right? If I understand it correctly an air speed sensor should avoid that problem.
Auto-land is not something I'm ever likely to try, but auto-takeoff I probably will.
Lot's of work has been put into the wind code and it is amazing. The pitot to my mind would make more sense in a bigger platform, you are going to bend, block or break it if you are not careful on that wing. Airspeed is derived in the wind model, pitot will make it more accurate for sure. You have to balance that against practicality. At the end of the day, a well-tuned model always wins. Don't forget you can experiment with all of this in simulation to get your head around what is going to happen. th-cam.com/video/ZXchSGg3xb0/w-d-xo.html More about synthetic airspeed in this page ardupilot.org/plane/docs/fixed-wing-faq.html#how_is_airspeed_used_with_no_airspeed_sensor there are a mountain of pages with info.
I did some more flying this evening, this time with some pretty decent wind. I increased the loiter radius to 80m and the circle it drew on the map was every bit as good as Phil's plane with airspeed sensor, makes me wonder if I need one at all now. I did not do the stall test since that's a bit tricky to do on my own, but I did play around with a bunch of related settings and managed to get the average current draw down to a much more reasonable 5-7 amps.
Cool, as you don't have an SD card you can always hand fly the stall and then review the TLOGs - telemetry logs for the speeds. ardupilot.org/copter/docs/common-mission-planner-telemetry-logs.html I would not put an airspeed sensor on such a small airframe. The synthetic airspeed really really really is good. The end goal for most users is to create a mapping wing that can hit its grid targets and use the min battery, you are well on the way. Adding more bits always makes things more complicated and increases the fail points. Looking forward to your next video. Auto takeoff and landing, I dare you. (biggest bit of the paddock for the first try)
Actually I had an involuntary auto land today courtesy of the battery failsafe that I was not aware I had enabled... at least I think that's what happened because the battery voltage was still ok and ESC was not even warm, but 'battery_usedmah' had just exceeded a number that I vaguely remember specifying during the initial wizard setup. Reading the docs though, since I have both "Low battery" and "Reserved mAH" set to zero on the failsafe page, I would have thought battery failsafe was not enabled. Anyway, luckily it came down on a flat patch of grass and the descent slope was not too steep so no damage was done.
So two wrong setting made a right! :-)
a mig welder ... yay
because you reverse the channels from the transmitter rather than in the software
OOH-YAHH I got goosebumps aah
I salute you!! Now fly the shit out of it. ZOOM IT CAPTION IFORCE.
HOPE your smiling now.
yeah I want to zoom it hey, but this camera is just no good for dat. I need a camera with voice commands to zoom maybe.... oh yeah...
Baud rate should be 112800 over USB, should speed things up for you
Awesome 😄
But isn't inav better and easier to setup ?
no - you have these problems in any new system that you're trying to set up
Marcin Domański but this one looks like from stone age if you compare it to inav or Betaflight
only if you don't compare the flight performance ;-) to be honest inav has a long way to be the greatest fixed wing controller (have 2 wings and one plane on it) the only problem i see is the lack of built in osd or in general - osd is not prioritized in development (the rest of the hardware of the newest pixhawks is far superior compared to what is going on in inav now - but it is geared more to UAV marked)
Marcin Domański yeah looks like, inav is mostly focused at drones. BTW you are from Poland ?
BuzzCola 3 yep im from Poland. Both system have their pros and cons. Good we can choose :)
Try turning your radio unit upside down.
Good for you you found out what what's wrong
Please email me all peram Files?
perhaps he can make them available somewhere?
Just make your own, its pointless sharing params after a point as you would have to put the control rods in exactly the same holes and have an identical prop, ESC and motor. Just fly using the defaults and tune, I have not found anything Ardupilot cannot fly out of the box yet.
i got apm 2.8 and I don't see the delta wing configuration, just plane with rudder i think. any suggestions?