liftbag

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Wooden Multirotors
« Reply #45 on: November 22, 2015, 09:19:40 am »

Alessio pointed that style out to me.  Of course I had to buy some for stock.  I haven't flight tested them yet.  I wouldn't trust the 3A rating, but they should be happy powering FC, GPS, OSD, Rx for maybe an amp total..  I think that 3A is probably inflated as are a lot of specs for stuff on eBay.
I've used several of that step-down before having known pololu regulators. No issues at all, but I prefer the Pololu for its small size and the components of much higher quality.
« Last Edit: November 22, 2015, 09:22:55 am by liftbag »

Re: Wooden Multirotors
« Reply #46 on: November 22, 2015, 11:38:21 pm »
Have the gimbal roughed in. I'll have to wait for the camera to get the C of G before i can go further. Landing gear will have to be a bit longer. She's gonna look like a flying spider.
« Last Edit: November 22, 2015, 11:41:51 pm by MrHeli4444 »

Re: Wooden Multirotors
« Reply #47 on: November 23, 2015, 05:45:10 am »


  How to get eight motors working and also
 a WS2811LED a buzzer and a BEC for
power to the board

Here's the config I used that was suggested by liftbag.
A great way, frees up output 3 and 4 for other options
like bec power to the board if using opto, a status light WS2811LED,
and a lost quad buzzer, etc.

ESC1 > Servo Output 1
ESC2 > Servo Output 2
ESC3 > Servo Output 5
ESC4> Servo Output 6
ESC5 > Flexi IO PIN7
ESC6 > Flexi IO PIN8
ESC7 > Flexi IO PIN9
ESC8 > Flexi IO PIN10
 
To activate the signals for ESC's 5678 go into
Hardware> Receiver port>  select  "Output"
« Last Edit: November 23, 2015, 09:17:35 pm by MrHeli4444 »

jhan1

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Re: Wooden Multirotors
« Reply #48 on: November 23, 2015, 05:51:37 pm »
Great information here Jim.  This should help people with setups that use more than 4 motors.  Octo looks Great by the way 😊

Re: Wooden Multirotors
« Reply #49 on: November 25, 2015, 03:57:57 am »

Finding C of G on a scratch built gimbal


first pic is roll C of G point
this where the roll motor is placed

the pitch motor is centered on the frame on the pitch axis and does not need a measurement

second pic is load C of G the center point where it will be fastened dead center to the octo
« Last Edit: November 25, 2015, 04:33:01 am by MrHeli4444 »

ggrif

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Re: Wooden Multirotors
« Reply #50 on: November 25, 2015, 05:27:37 am »

Finding C of G on a scratch built gimbal


first pic is roll C of G point
this where the roll motor is placed

the pitch motor is centered on the frame on the pitch axis and does not need a measurement

second pic is load C of G the center point where it will be fastened dead center to the octo
Thanks for sharing, been wondering how to accomplish that. What motors do you use?

Re: Wooden Multirotors
« Reply #51 on: November 25, 2015, 01:51:41 pm »

Finding C of G on a scratch built gimbal


first pic is roll C of G point
this where the roll motor is placed

the pitch motor is centered on the frame on the pitch axis and does not need a measurement

second pic is load C of G the center point where it will be fastened dead center to the octo
Thanks for sharing, been wondering how to accomplish that. What motors do you use?

This is a small gimbal with a light load so I chose these.
http://flyduino.net/Flyduino-G2208-018mm-80-Turns-Motor-for-Alex-Mos-Gimbal
A pair for both pitch and roll.
I don't feel a third yaw axis is necessary so I like
a 2 axis set up. The cost of lifting a 3rd motor is not worth it...IMHO
Yaw doesn't need the stabilization required for pitch and roll to
get that "cinematic effect".


Re: Wooden Multirotors
« Reply #52 on: November 27, 2015, 04:46:40 am »
 Done testing props and batteries. 4 4.5 props and 2200 batts seem to be best for this rig. 4 1/2 minute flight times which is fine for the type of shooting I will be doing with this. Mostly short panning shots less than a minute. Will have a video out tomorrow if all goes well.

liftbag

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Re: Wooden Multirotors
« Reply #53 on: November 27, 2015, 08:15:43 am »
Hi Jim. What kind of props are you using? Bullnose or full tips?

[EDIT]
Ok, now I see the pictures, bullnose.
« Last Edit: November 27, 2015, 12:21:16 pm by liftbag »

Re: Wooden Multirotors
« Reply #54 on: November 27, 2015, 01:01:13 pm »
Hi Jim. What kind of props are you using? Bullnose or full tips?

[EDIT]
Ok, now I see the pictures, bullnose.
Hi Paolo, jhan gave me some DAL BN 5" they have a soft tip to test but motors still got hot. I also tried 4s with the 4" but efficiency just changed slightly to a longer flight by 20 sec's. So i went back to 3s to be safe. Don't want to push the esc's too hard with 4s. I also tried the soft basic 5" gem fans w 4s but it was squrriley. The bull nose 4 4.5 seem to fly smoothest with longest flight times at 4 1/2 minutes motors/ esc's just slightly warm.

I could go bigger motors bigger props which are more weight meaning a bigger size overall aircraft. I'm trying hard keep it small as possible for indoor shooting.

Re: Wooden Multirotors
« Reply #55 on: December 03, 2015, 04:48:07 am »
Onward...going big this time. Haven't built anything really big yet.  785mm 13" props is what I have laid out. I'll be using all Basswood for this build. right to left main body, top plate, and the 2 arms on left.
« Last Edit: December 03, 2015, 04:51:54 am by MrHeli4444 »

Re: Wooden Multirotors
« Reply #56 on: December 03, 2015, 10:54:46 am »
Arms 605mm with grove ploughed out for motor wires

Re: Wooden Multirotors
« Reply #57 on: December 04, 2015, 03:15:14 am »
Body shaped and ESC's fitted, vibration dampeners cut from tubing.

Paolo

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Re: Wooden Multirotors
« Reply #58 on: December 05, 2015, 11:48:38 am »
Super idea, means here in Africa we can do many type of them, but some woods from Congo are really Heavy but extra strong.
Why someone cannot involv IKEA on production of wood drones?
Is not a joke, it will be an idea. And shape of drone of IKEA can be the K, why not?
For sure they will issue a clear installation notices, not like most of Asia manufacturers of drones...!

from Paolo, Kigali - Rwanda

ggrif

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Re: Wooden Multirotors
« Reply #59 on: December 11, 2015, 10:24:41 pm »
Finally, my swallow tail is 90% complete, just need to add flight and FPV cams etc.

Before I do I want to see if I can muddle through some oscillation/erratic flight  issues I have encountered on other frames in GPS mode, i.e. see if they replicate on this new, default config'd frame. I'm also curious to see how the BG Revo clone performs in GPS modes.

Anyway, here are some pics for my fellow wood heads out there.