All I see in that video is the craft lifting off and being tugged by those tethers. Take it to an open area and make another attempt after following these instructions:
Go to Mission Planners Setup>Mandatory Hardware>Initial Tune Parameters and enter 10" props and 3S battery and write the resulting parameters. Then set these manually:
INS_ACCEL_FILTER,10
INS_LOG_BAT_MASK,1
INS_LOG_BAT_OPT,4
PSC_ACCZ_I,0.7
PSC_ACCZ_P,0.35
Don’t baby the throttle on take off. Give it enough to rapidly get it off the ground a meter or so. If succesful hover for ~1 minute land and post a link to that log.
There is no GPS in this log. What happened to that?
@dkemxr, you told me to not worry about the GPS, so removed it from this flight. Should I connect with it? I thought GPS might be the issue seeing so many compass error warnings. I will connect GPS in tomorrow’s flight if that’s the case.
Yes, you should connect it. A GPS glitch is one thing, not having GPS at all is another. You for sure need the external compass that’s in the GPS module. The Pixhawk’s own internal compass is almost always useless and thus disabled. But, don’t worry about that now, just connect it and make the flight after setting those parameters.
Okay, so a terrible crash, it hovered for about a minute, half metre high, but then suddenly gained altitude on its own and came banking left towards inside. Good lord it did not fly away somewhere else and crashed in home only. I’m attaching Log file with the video in the Gdrive. https://drive.google.com/drive/folders/1Gv4Bb8WlMuELfAB41wAF7tMBjxq7MjGl
Regards.
Those motors with collet adapters are not doing you any good but have you balanced the props?
In any case before you can advance the vibration levels have to be greatly reduced.
I don’t know where you are getting batteries but they all seem to be shit. Here it’s supplying expected current for that craft at hover but it’s sagging way too much.
So, The only reason I am avoiding parks dave, as told earlier, is due to the fear of losing the craft on its own, isn’t there a way to have a kill switch sorta thing so that atleast i can save it from flying away? Coz tomorrow, I will be going out with the craft. I have some questions:
Pixhawk is on top, can i shift it to middle of the frame with the damping pads? It can protect the pixhawk from getting damaged. Also, since now I have atleast a lift off. Does this mean i don’t have a bad pixhawk?
For Vibration Now I will be ordering 2212-920 kv motors, battery I have for now, so do these motors have soemthing extra that they cause less oscilations? As you mentioned like collet adapters? Cause while putting some throttle one of the motors vibrates so much as if it was a tractor’s engine.
What did actually cause it to go out of control? There might be some event or instance that the quad ascend on its own and then came ramming down to the left.
Regards
Of course there is. You really need to read the documentation: Aux functions
No evidence of a bad Pixhawk.
Vibrating like a tractors engine and you took off? No comment is needed about that action.
Acceleration over the full scale of the accelerometers (clipping). Acceleration is a component of sensor fusion for altitude. This is why you can’t advance until the vibe levels are reduced.
I already answered your question about collet adapters. Collet adapters bad, motors with threaded shaft bells good…
Apologies dave, Project completion is nearing so was in rush to provide you the logs. My bad. I will Order the new Motors Right away, these would work right? Or any other sugestion? And what is this CW rotation? I can order 4 of them straight away?
Yes, those are fine for an inexpensive motor. 2 motors have to be CW (clockwise) and 2 motors are CCW (counter clockwise). On these types of motors they have left and right hand threaded shafts so they don’t loosen under load.
So obviously order 2 of each. A set of 4 will usually be this way. A decent set of props would help too. Those cheap plastic ones are terrible.
In those cheap golden motors reversing the polarity will usually make it cw or ccw, it isn’t the case with these ones? Coz I see similar 3 wire config.
Rest are mostly plastic only, just wanted to confirm Material: Glass Fiber Nylon vs Material: Carbon Nylon.
Also @dkemxr, I was wondering how these people are able to achive this kind of stabilty with all the hardware that matches mine and you have mentioned in hardware to avoid. Is this because of tuning the quad. https://www.youtube.com/watch?v=CRVceIn6xIk&t=6s
Regards
Those are probably both the same and the “carbon” is bullshit or what is coloring it black. I would go with the 1045’s.
I have not seen many, if any, achieve good performance and I have seen these craft on the forum for many years. I had this kind of craft (but not those junk motors) in 2014 and pushed it as far as it would go even with replacement G10 arms. Which just exposed how shitty the frame was. It is not worth spending the money on anything on that list IMO. And if your school is offering this stuff they are doing their students a disservice. Ask your instructors to contact some reputable manufacturers (preferably Ardupilot partner companies) and make the case for donated gear.
If you see, in this video, he is using exact same config as hardware to avoid components still the quad is super stable. Do these Pixhawk’s also matter? Like can his pixhawk be a better chinese clone than mine. Also: He is using a Pencil stand as the GPS mount
Also, this is my second battery of this week, battery was completely new and shows 80C, does battery sag happen only when buying shit batteries? I mean is a bad battery only the culprit for the battery sag? What is typical battery graph expected with a good battery? When does it not sag? I can see, battery is dipping to 9.5 volts should that line be mostly straight?
Regards
Did I say something wrong @dkemxr? I think you are saying me goodbye. I still am a newbie and your insight is what my project needs, not luck. Apologies for anything that might have hurt you, was never my Intent. Was just asking about stabilty of the quad and how it is achieved. I hope you forgive me.
Regards.
I still am a newbie and your insight is what my project needs, not luck. Apologies for anything that might have hurt you, was never my Intent. Was just asking about stabilty of the quad and how it is achieved. I hope you forgive me.