I need some help with my octo.

[Fdo]

A friend start to do some aerial photos, so he bought a octo Tarot T1000 with 4114 motors.

He didnt know how to make it work so he give it to me and now i have it flying but the big problem to me is to make it work properly.

I have been only in this "hobby" about 2 months and i understand the basics, the problem is make the gains properly to the weight.

The info is the next one.

Tarot T1000
4114 350kv tarot motors
Hobbywing Platinum PRO 30A opto ESC 6s
2 batteries 8000mAh 6s
Wokong M
1555 propellers
3 axis gimbal with alexmos.
Canon T3

I cant find a place to weight all the gear but i can guess is about 6 or 7 Kilos.


English is not my native language, if there are mistakes please accept my apologize.

 

[hexacop]

Sorry but to be honest, the best advise for your friend would be to buy a light wight copter and start to learn the basics.
After he got an idea about basic settings, which by the way are well explained in various DJI tutorials he can start to fly.
After he is able to fly safely in manual mode he can start to use such a dangerous copter with 7kg and by that time he will be able to adjust settings accordingly.

 

[Fdo]

Sorry but to be honest, the best advise for your friend would be to buy a light wight copter and start to learn the basics.
After he got an idea about basic settings, which by the way are well explained in various DJI tutorials he can start to fly.
After he is able to fly safely in manual mode he can start to use such a dangerous copter with 7kg and by that time he will be able to adjust settings accordingly.

Thank u for the advice, but that is not the solution for the problem i am searching here.

I will buy a small 4 rotors to play in the near future, but for now i need this octo working properly.

 

[CG Photo]

I don't find that flight controller gains settings make all that much difference. The idea settings are different for every craft and configuration. Changing battery size and camera load may require small adjustments in the gains for optimum results. During my first flight with a new or changed frame, I set up one of the knobs on my controller to be the gains adjust. I start with the recommended gains for the controller as found in the manual. A good pilot can fly with very low or very high gains so anything in the middle will work for testing. I prefer slow gentle movements and generally lower my settings from the recommend numbers. If it is really windy higher gains will help the craft hold position. Just set the gains at the DJI recommended numbers and it will fly if everything else is ready to go.

The thing is if you knew what you were doing you would not be worried about the gains, or settings, or fail safe. These are all things you learn to do on a smaller craft that you can afford to loose. If you try to learn to fly with an octo, you are most likely going to crash it and then you have nothing.

Real pilots don't start with a 747, they start small and learn. Get a F450 or F550 and put your controller on that. If you crash it, you can just replace the broken props/arms for practically nothing.

 

[Fdo]

I don't find that flight controller gains settings make all that much difference. The idea settings are different for every craft and configuration. Changing battery size and camera load may require small adjustments in the gains for optimum results. During my first flight with a new or changed frame, I set up one of the knobs on my controller to be the gains adjust. I start with the recommended gains for the controller as found in the manual. A good pilot can fly with very low or very high gains so anything in the middle will work for testing. I prefer slow gentle movements and generally lower my settings from the recommend numbers. If it is really windy higher gains will help the craft hold position. Just set the gains at the DJI recommended numbers and it will fly if everything else is ready to go.

The thing is if you knew what you were doing you would not be worried about the gains, or settings, or fail safe. These are all things you learn to do on a smaller craft that you can afford to loose. If you try to learn to fly with an octo, you are most likely going to crash it and then you have nothing.

Real pilots don't start with a 747, they start small and learn. Get a F450 or F550 and put your controller on that. If you crash it, you can just replace the broken props/arms for practically nothing.

Thank you for the answer.

I know the big problem is start with something big and not a begginers multirotor, but we have it here and i cant go back with this. I must make it work properly.

The issues is the octo dont stay "soft" in the air, it moves to the sides and when i turn it on the motors dont start at the same time.

Some motors start moving at 10% of the stick, and other start moving at 40 amoust 50% and makes me worry a lot about it.

Once in the air the octo is a bit shaky and slowly moves to the sides.

 

[CG Photo]

Once in the air the Wookong will try and keep the craft level. If the motors are not starting at the same time the ECS may not be properly calibrated. You will need to check with the esc programmer / manufacture to see how to calibrate them. Usually it involves connecting each one to the receiver one at a time and running the throttle up and down in a specific way. Once done the motors will all start at the same time. Typically a Wookong controller will keep the craft in a box about 3 meters high and 3 meters wide. It won't hold a precision position. The Naza V2 and A2 controllers will hold position much better.

 

[PeterLester]

Keep in mind that much of the capability of the Flight controller to maintain flight stability is dependent upon the ability of the motors to respond fast enough to FC commands, i.e., change speed quickly.
If the motors do not have enough torque so as to respond instantly to FC commands, then the PID gains for Basic and Attitude cannot overcome this limitation.
Even if the original owner, designer used eCalc for multirotor, this issue is not identified by eCalc.

At first glance you might have motors with enough torque but much depends on your MR AUW - all up weight.

 

[Carapau]

Your motors are starting at different times because you haven't calibrated the ESCs to your transmitter- this is something independent of the WKM. Look up your ESC documentation on how to do this but it is part of usual setup ie the ESCs need to know the end points of your TX. The most common process is plug your esc control cable directly into your receiver. Power on the bird with your throttle on full (make sure all props are off for this although the motor should not spin up). When you hear a tone, reduce the throttle back to zero. You will hear another tone and that is you done- or at least something like that. Repeat for each motor unless you can make an 8 into 1 plug which is the best way and then all ESCs are calibrated to the exact same points.