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Mar 06, 2013, 11:06 AM
small electrics r BIG FUN
Quote:
Originally Posted by T J Gilbert
Don't fly.
IMU Basic Calibration is required...
I've just downloaded the advanced owners manual but see nothing about IMU calibration.

I'm very confused and don't know what this is or how to do it.
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Mar 06, 2013, 11:18 AM
Registered User
R Hudson's Avatar
Quote:
Originally Posted by Al P
I've just downloaded the advanced owners manual but see nothing about IMU calibration.

I'm very confused and don't know what this is or how to do it.
DJI Phantom Maintenance Calibrating the IMU (6 min 6 sec)
Mar 06, 2013, 11:32 AM
DJI Phantom pilot
Quote:
Originally Posted by Al P
I've just downloaded the advanced owners manual but see nothing about IMU calibration.

I'm very confused and don't know what this is or how to do it.
IMU: inertial measurement units, consisting of 3-axis gyro an 3 axis accelerometer.

5-6 fast green flashes: the IMU is confused.

You have to hook up the Phantom to a PC, with a USB cable.

On the PC you need Phantom assistant software.
In the assistant you can calibrate the IMU.

It is quite straightforward and will only cost you a minute when you have done this several times.
Mar 06, 2013, 11:33 AM
small electrics r BIG FUN
Thanks R Hudson and others for your help. IMU needs calibration... that stinks as I use a MAC and I haven't even flown it yet.

I went back outside and got the single green flash followed by 4 yellow flashes for what seemed like 4 or 5 minutes. Then I got the single green flash, followed by the single green flash. OK, so then I arm the throttles and it then it starts flashing the single green followed by 4 green flashes. Does this still indicate that the IMU needs to be calibrated ?
Mar 06, 2013, 11:34 AM
Empire Support
T J Gilbert's Avatar

Rtf?


Quote:
Originally Posted by Al P
I've just downloaded the advanced owners manual but see nothing about IMU calibration.

I'm very confused and don't know what this is or how to do it.
The Phantom is ready to fly (unless it needs the IMU Basic Calibration).
For the Phantom pilot to be ready to fly, you really need to read the Phantom Manual and take the time to watch Colin Guinn's videos.
If you don't, unfortunately, you will be "very confused and don't know what this is or how to do it".

Now, please don't get your feelings hurt. I'm not making fun of you...
I'm actually surprised that for someone with as many posts and flying years as you have that you have not read the manual & watched the videos...
Last edited by T J Gilbert; Mar 06, 2013 at 12:13 PM.
Mar 06, 2013, 11:35 AM
DJI Phantom pilot
Quote:
Originally Posted by Paramotor1
http://youtu.be/KTiaMrcAGeU
Hi folks. I have put together a selection of my clips filmed in Ireland over the last month. Phantom with gopro3 black,balanced stock props,and downlink. Hope you enjoy.
Very nice! This is what quadcopter video is all about in my opinion
Still a little jello here and there, what kind of vibration damping are you using?
Mar 06, 2013, 11:38 AM
Registered User
Quote:
Originally Posted by Al P
Thanks R Hudson and others for your help. IMU needs calibration... that stinks as I use a MAC and I haven't even flown it yet.

I went back outside and got the single green flash followed by 4 yellow flashes for what seemed like 4 or 5 minutes. Then I got the single green flash, followed by the single green flash. OK, so then I arm the throttles and it then it starts flashing the single green followed by 4 green flashes. Does this still indicate that the IMU needs to be calibrated ?
When it's in the air and you start moving the sticks away from the center point, it will flash green multiple times, indicating sticks out of center.
Mar 06, 2013, 11:38 AM
Empire Support
T J Gilbert's Avatar

IMU Needs Calibration


Quote:
Originally Posted by Al P
Thanks R Hudson and others for your help. IMU needs calibration... that stinks as I use a MAC and I haven't even flown it yet.

I went back outside and got the single green flash followed by 4 yellow flashes for what seemed like 4 or 5 minutes. Then I got the single green flash, followed by the single green flash. OK, so then I arm the throttles and it then it starts flashing the single green followed by 4 green flashes. Does this still indicate that the IMU needs to be calibrated ?
Yes, it does mean that the IMU needs calibrating.
I know you keep hoping it won't because of the Apple vs. Windows dilemma you have.
I guess it's off to Boot Camp for you...
Mar 06, 2013, 11:39 AM
Empire Support
T J Gilbert's Avatar

Sticks Off Center


Quote:
Originally Posted by jcmendo01
When it's in the air and you start moving the sticks away from the center point, it will flash green multiple times, indicating sticks out of center.
That is only a double green (or yellow) flash...
Mar 06, 2013, 11:41 AM
Registered User
Quote:
Originally Posted by DutchVince
This might even be wilder and would hide the pole:

gopro hd 360 degree swivel mount


gopro hd 360 degree swivel mount (4 min 34 sec)
Mar 06, 2013, 11:50 AM
Registered User
Quote:
Originally Posted by DutchVince
Very nice! This is what quadcopter video is all about in my opinion
Still a little jello here and there, what kind of vibration damping are you using?
just some sorbothene between the frame and stock mount. Waiting for the brushless gimbals to come out before I do anything else.
Mar 06, 2013, 12:15 PM
Living and Learning
Quote:
Originally Posted by rcpilot23
Have you balanced the props

That will eliminate almost all jello
I gotta chime in and stress this one. I have the graupner 8x5's balanced, and I borrowed a friends gopro hero 3 black. I literally did NOTHING else, and I have NO jello period -- Even at 30fps. Maybe I'm lucky?
Mar 06, 2013, 12:17 PM
Living and Learning
Quote:
Originally Posted by branflakes
I felt the same way. I'm on my 4th or so flight. You need to let it sit there for about 4 mins sometimes then it will lock on and be safe in GPS mode, single flashing green. I've never flown any quad before its totally stable you w see
It's strongly advised to take off in Attl mode (single yellow flash versus green), and then go back to GPS if you like. People attribute taking off in GPS mode to the occasional tipover and props dug into the ground. I've only had it happen once and GPS was indeed on. I've never had it happen following what i mentioned.
Mar 06, 2013, 12:22 PM
Registered User
branflakes's Avatar
what about landing...the same?
Mar 06, 2013, 12:22 PM
Registered User
GGoodrum's Avatar
Quote:
Originally Posted by sly5789
Now I'm interested in trying the zingers wooden prop 9". Do you need a washer when putting these on? Any pictures or how to would be appreciated. Thanks.
No, you do not need a washer, as the hub for these is sized just right for the DJI motor bell/shaft. Also, no need for a lock washer either, as the wood compresses slightly, which acts as a natural lock washer.

I now finally have both the 8x5 Zingers and the 9x4 Zingers in stock, along with the dual-stage isolation mount. You can download illustrated balancing and mounting instructions from the description pages.

-- Gary


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