Replies to This Discussion

DeveloperPermalink Reply by Randy on February 8, 2012 at 9:50pm

I think you should turn simple mode off and just fly regular stabilise mode.  You cetainly should not hold it in your hand when taking off.

 

Try taking the props off first and make sure you understand how your radio controls are going to affect the engines.  With the props off you can also pick it up and move it around to see how it reacts when you lean it over.

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Permalink Reply by Dusty Starbucks on February 9, 2012 at 12:39am

Yes, do what Randy said and you should do a hand test as well. There is info in the Wiki on this. Basically, you have to be somewhat careful in doing it, especially with an octo. Do you know if you can limit your throttle to say 40% ? I limited everything except rudder it won't arm if you limit rudder. This must be done after your radio calibration in APM. The other way to test without holding in your hand, is to bring up throttle very slowly and preferably on a nice grass surface. When the blades spin and you have some air, but not enough to take off, see if the copter rocks the way you would expect when gently pushing the rudder, roll and pitch controls.

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Permalink Reply by Anselm on February 9, 2012 at 4:30am

Thanks for your first answers.

@ Randy: Ok, i set simple mode off. I started the engines without the props but i can't check the rpm. I mean the motors turn the same. Now if i change the position of the copter, i can hear, that some other motors turns faster/slower - but i can't see or check which motors changed their speed.

@ Dusty: Careful is the right word. Therefore i will get some tips from this great forum. I asked same question in our german forum, but I didn't get answers and I don't will takeoff without these... Yes, I can limit the throttle to 40%. After all setup-settings I connected batteries and armed motors. Then I hold the copter on the top and increased slowly the throttle. I'm not sure, but I think the copter would take a backward-jump on head or can the reaction be a result from the holding? I have some fear that the copter at the first start directly factored. ;)

- I've checked the reverse-box at roll-channel. Now the green bar follows the stick-direction. After the click on done I took the other settings. If I reopen this setup-window the reverse-box was unchecked - ist this correct? For the YAW-channel I reversed the direction not with the checkbox but I set the reverse at the radiocontrol. What's the better way? I don't trust the checkbox because they is unchecked after reopen...

- Can i start and land in stabilize mode or must i change it before? (I think so)

Now I'm really excited on the first flight.

Best regards!

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Permalink Reply by Dusty Starbucks on February 9, 2012 at 6:45am

I've done many hand tests with my hexa and at first I was a little scared of it. But now I wouldn't fly it without doing that. It tells you if it is reacting correctly. You don't want a lot of speed on it you just need enough to turn the blades. They are still going fast but it shouldn't pull out of your hand. You only want to see if it try's to stay level. That it pulls to level if you tilt it a little one way then the other.

I can pretty much trim my yaw on the garage cement. I just turn up throttle until it gets close to lifting, then it starts to rotate a little and I trim. In the grass I look for roll and pitch issues in the same way. You'll be able to lift it off gently and set it back down right away. Baby steps.
Why didn't you mount the motors at 3 deg?

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Permalink Reply by Anselm on February 9, 2012 at 8:27am

I don't have utulities to create a 3 degree mounting-plate and I heaven't found a shop in EU where I could buy such a mounting-plate. What are the benefits for a 3 deg-mounting? Which settings I must change if I mount the motors with 3 or 0 deg?

Now I've used the button "set level" in the setup. If I read your text, you set the zero-level "by/at flight", right? Must I level the copter before every start or only once time? And, if I took a firmwareupdate later, must I reconfigure all settings?

I think that will be a good first start with this genious help. :)

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Permalink Reply by Fred on February 13, 2012 at 6:30am

Hi folks,

yesterday i found out,that Anselm and me are accidently working on a similar projekt.

We r already exchanging experiences.

Here´s what i got so far                                                                                                        

Looks pretty similar.

It´s Alu 10x10 ,but i intend to build it in 19mm cfk tube,so if i use Gaui ESC´s they will fit inside the tubes.

Made a prototype motormount today.Weight when finished,about 15 gr. Material POM

Any comments are very much appriciated

Regards Frido

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Permalink Reply by Michel Dias Arouca de Souza on October 13, 2012 at 11:29am

I need a diagram on autocad dwg octocopter arducopter, only the center plater.
helping me

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Permalink Reply by Michel Dias Arouca de Souza on October 13, 2012 at 11:30am

I need a diagram on autocad dwg octocopter arducopter, only the center plater.
helping me

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