What important P3 calibrations to be done before a launch?

Joined
Oct 30, 2014
Messages
47
Reaction score
15
I always do the compass calibration before a launch. Let it then sit and connect with satellites. Is this the IMU, or is that something else? Tried to do a search "IMU Calibration" but got back msg the "IMU" was too short to search.

What else should I do as far as calibration?
 
Joined
Jun 8, 2015
Messages
135
Reaction score
9
Age
53
"Make sure you are using the Pilot app from the DJI website and _not_ from Google Play."

why is that?
 
Joined
Jun 8, 2015
Messages
135
Reaction score
9
Age
53
Compass Calibration helps set the magnetic declination. You should NOT do compass calibration unless you travel a significant distance east or west from your last calibrated position or a really significant distance north or south.
You should only do IMU calibration on a flat surface, inside your house in cool temperatures. (some even chill their P3 in fridge beforehand, I have not done this). You should only calibrate IMU again after a hard landing, crash or packaging up your P3 and taking it for a trip where it got really tossed around.

So if I only go about a mile from my last point I shouldnt re calibrate, and if so, why not?
 
Joined
May 4, 2015
Messages
238
Reaction score
48
Age
54
Location
Yokohama, Japan/Taichung, Taiwan
Rather off topic, the reason to calibrate electro magnetic compass is NOT the difference between true north and magnetic north, on any device. To get rid of magnetic affection from the device itself (i.e. motherboard, ESCs, motors or battery on P3), and get true sensor output by direction. If to know the difference between true & mag north, calibration must be done after GPS & gyro is locked firmly...
On this reason, the description on DJI manual ("after long trip") is wrong. Actually when my P3 came from Hongkong I need no compass calibration. Should be done sometimes... I cannot tell when, sorry. ;)
 
Joined
May 14, 2015
Messages
75
Reaction score
39
Age
49
The IMU (Inertia Measurement Unit) is not the compass. Think of it as being similar to the gyro and accelerometer on a smartphone.

I don't do an IMU calibration each time, but I always do a compass calibration. I also have to do a gimbal calibration each time I fly since my gimbal is wonky after my crash. :-(
 
Joined
Jan 29, 2015
Messages
4,849
Reaction score
2,057
Location
Salt Lake City, UT
"Make sure you are using the Pilot app from the DJI website and _not_ from Google Play."

why is that?
DJI has a newer version posted on their website.

Google Play = 1.0.10

DJI Website = 1.1.0

http://www.dji.com/product/phantom-3/download

Just another example of DJI dropping the ball. They have yet to be bothered to send the updated version to Google Play. There are _big_ differences in the versions.
 
  • Like
Reactions: mick

ianwood

Taco Wrangler
Joined
Jan 7, 2014
Messages
5,109
Reaction score
2,041
Location
Lost Angeles
As others have already alluded to, the most important sensor to calibrate before flight is your brain. No one will give you all the answers in one thread. You'll need to spend a few hours reading as many threads in this forum as you can. It will save you from making a costly mistake and is 100% worth the time spent.
 
  • Like
Reactions: bobmyers
Joined
May 10, 2015
Messages
3,622
Reaction score
870
Age
76
Location
San Antonio, TX
As others have already alluded to, the most important sensor to calibrate before flight is your brain. No one will give you all the answers in one thread. You'll need to spend a few hours reading as many threads in this forum as you can. It will save you from making a costly mistake and is 100% worth the time spent.
I just cant fathom unboxing the copter/camera, doing a quick start read over and expecting perfect results without thoroughly researching the manual, forums and youtube before attempting to fly and record video. .
IN BIG BOLD TYPE-- PLEASE READ AND STUDY BEFORE YOU FLY
Maybe this should be a banner across the Forum Pages:)
 

msinger

Approved Vendor
Joined
Oct 30, 2014
Messages
30,924
Reaction score
10,227
Location
Harrisburg, PA (US)
Cadillac Bill, all of the calibrations can be done from the DJI Pilot application. After installing new firmware, you should do the following calibrations:

- IMU
- Gimbal
- Remote Controller
- Compass

It's also a good idea to do an IMU calibration in the following cases:

- You crash
- Your Phantom gets bumped around a lot (e.g. you drop your case)
- Your Phantom is not able to yaw in place

It's not necessary to calibrate your compass each time you fly. Here's when you should do it:
Compass Calibration, A Complete Primer | DJI Phantom Forum

Check out this video for some tips on calibrating the IMU:


And, if you really did not download the Phantom manual yet, you can download it here.
 
Last edited:

New Threads

Forum statistics

Threads
135,370
Messages
1,400,671
Members
98,603
Latest member
Spudzeric