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« on: April 26, 2013, 11:31:09 PM »
Adityaamg
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I made this H quad a while ago and tuned it so that it is flyable. but it yaws to the right after take off, don't know why Huh? Bang Head ....maybe i couldn't figure out the yaw PI settings well enough.

and one more thing the throttle goes up and down on its own ... and that scares the crap out of me Shocked Head Scratching
esc are flashed with simonk firmaware (HK f-30 light blue ones)

Please help me out with this problem Cry Cry


motors: Fc 28-22 1200kv
esc: HK F-30 (simonk)
prop: 10/4.5
battery: turnigy 2200mah 25-35c
board: kk2
frame: HD thermo and plywood
total flying weight is 700grams approx.
IMG-20130426-00763.jpg
H-quad (HELP needed)
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« Reply #1 on: April 26, 2013, 11:55:05 PM »
lastRites
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I think vibration may be the problem. Did you balance your props and motors? After that check your battery. You should check your motor bearings too.
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« Reply #2 on: April 26, 2013, 11:56:21 PM »
lastRites
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Plus the controller board seems misaligned.
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It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
 

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« Reply #3 on: April 27, 2013, 12:00:28 AM »
Adityaamg
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i did balance the prop and motors but still had some vibrations.
one thing i did notice that the bell of one motor had slight play to it and it rattles at a certain rpm.
how can i fix the motors??
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« Reply #4 on: April 27, 2013, 12:02:04 AM »
Adityaamg
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actually the arms are at a certain angle, that's why the board seems to be off set.
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« Reply #5 on: April 27, 2013, 01:56:12 AM »
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Quote from: lastRites on April 26, 2013, 11:56:21 PM
Plus the controller board seems misaligned.

+1 to that... make sure you align the board properly. There should be an arrow mark on the board to do so. Proper balancing of the props will help you with the stability too. Do follow their instructions line by line. Throttle calib for all escs should be done for proper spooling up.
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« Reply #6 on: April 27, 2013, 11:45:58 PM »
Adityaamg
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i have tried everything possible ...now i am concentrating on how to reduce vibrations even further..
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« Reply #7 on: April 28, 2013, 08:37:08 AM »
lastRites
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Have you checked the CG? It should be below the flight controller.
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It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
 

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« Reply #8 on: April 28, 2013, 02:30:03 PM »
veloci
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Aditya, your board SHOULD be in the centre, as lastRites suggested...
FYI,
Here is my H-Quad build......
http://www.rcindia.org/multirotors/h-quad-build-(jit-for-the-rci-sweep!)/
Cheers!
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« Reply #9 on: April 28, 2013, 08:22:10 PM »
Adityaamg
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i am pretty sure that ill have to play with the PI settings
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« Reply #10 on: April 28, 2013, 10:48:49 PM »
lastRites
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Does your quad undergo fast oscillations in flight OR does it not react to control inputs fast? These are the only two problems that you can rectify by PID parameter tuning. So I am pretty sure that is not where your problem lies.
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It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
 

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« Reply #11 on: May 08, 2013, 12:34:07 PM »
ved
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Hello Guys
I have made a H Quad and I am facing a problem. My all motors rotate in same direction. Can anyone please tell me which motors should rotate in which direction and how to solve the problem? Please help me. Sad
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« Reply #12 on: May 08, 2013, 12:45:25 PM »
ved
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Help please  Help Me Help Me Help Me Help Me
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« Reply #13 on: May 08, 2013, 12:48:09 PM »
Adityaamg
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do you know how to change the spinning direction of the motors by interchanging the 1st and 3rd wire between the esc and motor?
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« Reply #14 on: May 08, 2013, 12:49:10 PM »
Adityaamg
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can you post some pics of your quad? m curious!!
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« Reply #15 on: May 08, 2013, 12:51:46 PM »
ved
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So we have to interchange the wires. But I want to know which motor should spin in which direction.
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« Reply #16 on: May 08, 2013, 12:54:51 PM »
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which board are you using ??

maybe this video will help you.
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« Reply #17 on: May 08, 2013, 12:59:37 PM »
Adityaamg
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motor layout for an X quad or H quad is the same.
skip first 4 minutes of the above video
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« Reply #18 on: May 08, 2013, 01:03:17 PM »
ved
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Thanks for the video. I am using  V3 HK board flashed with V4.7.
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« Reply #19 on: May 08, 2013, 01:05:35 PM »
ved
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So M1 and M3 should spin clockwise and M2 and M4 should spin anti-clockwise.
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« Reply #20 on: May 08, 2013, 01:07:05 PM »
Adityaamg
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maybe your board requires a different motor direction layout....but i think this layout is the one for your board too.. its universal i think Head Scratching ...but again look for the manual if you can to be on the saafe side Thumbs Up
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« Reply #21 on: May 08, 2013, 01:07:46 PM »
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Quote from: ved on May 08, 2013, 01:05:35 PM
So M1 and M3 should spin clockwise and M2 and M4 should spin anti-clockwise.
correct
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« Reply #22 on: May 08, 2013, 01:09:26 PM »
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drop a message on 8655448398 :)
Is there a video of what happens when all motors on quad are spinning in same direction? Just because I wondered what would happen if they do  Giggle
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« Reply #23 on: May 08, 2013, 01:10:52 PM »
ved
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So LEFT LAND props will go on M2 and M4 and RIGHT HAND spinning props will go on M! and M3.
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« Reply #24 on: May 08, 2013, 01:12:46 PM »
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 Giggle nothing is more scary than 4 spinning propellers coming after you Shocked .... ask me how i know  Giggle
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