Zino Crashed again - Usteady Drone

501Pete
Posts: 130
Joined: Thu Oct 25, 2018 1:06 pm

Re: Zino Crashed again - Usteady Drone

Post by 501Pete » Sat Dec 15, 2018 9:38 am

MrDronenut wrote:
Fri Dec 14, 2018 9:34 pm
Pete. This is for you and DonHienz both.
If you will d/l the "Compass"app from "Play Store",it will help you to see if your compass is compromised.
1.Open the compass app and set it down on a table,and get it turned until it reads "0°"
2.Turn on Remote,Zino,and device. Let it all link up.
3. In lower right corner,see where it says "yaw". It will read in degrees.
4. Turn Zino,sitting flat on the table,until the "yaw" reading is 0°.
See how much difference between the reading or in the direction your Zino is compared to what your compass app is reading.
With Zino flat on the table,and your phone flat on the table,,Zino's camera,and The top of your phone should be pointingin the same direction. Both should be within 2-3°of each other.
If not,recalibrate Zino.
OK. So Hubsan now have labeled Heading YAW :o
My humblest apologies for not noticing.

I have no need to download any compass app :-)

Using a compass app on your phone actually tells you very little.
It can be out of calibration just the same as the quad can be.
Taking a horizontal reading is also non conclusive.
The magnetometer measures the magnetic field in 3 axis, x,y and z.
Just comparing the horizontal reading tells you only that it's roughly the same when the quad is perfectly level.
Unfortunately quads pitch and roll to initiate movement (and stay in position), which is why, during calibration, you have to turn the quad in the x plane then the y and it integrates the two to give you a "spherical" calibration offset table.
You' can tell more about calibration performance just by lifting the rear legs and pitching the quad forward, than you ever will by comparing two different electronic compasses, calibrated differently.
You're better off using a real compass, and keeping it well away from the quad :)

3108vibhash
Posts: 124
Joined: Wed Oct 24, 2018 7:52 am

Re: Zino Crashed again - Usteady Drone

Post by 3108vibhash » Sat Dec 15, 2018 9:45 am

501Pete wrote:
Sat Dec 15, 2018 9:38 am
MrDronenut wrote:
Fri Dec 14, 2018 9:34 pm
Pete. This is for you and DonHienz both.
If you will d/l the "Compass"app from "Play Store",it will help you to see if your compass is compromised.
1.Open the compass app and set it down on a table,and get it turned until it reads "0°"
2.Turn on Remote,Zino,and device. Let it all link up.
3. In lower right corner,see where it says "yaw". It will read in degrees.
4. Turn Zino,sitting flat on the table,until the "yaw" reading is 0°.
See how much difference between the reading or in the direction your Zino is compared to what your compass app is reading.
With Zino flat on the table,and your phone flat on the table,,Zino's camera,and The top of your phone should be pointingin the same direction. Both should be within 2-3°of each other.
If not,recalibrate Zino.
OK. So Hubsan now have labeled Heading YAW :o
My humblest apologies for not noticing.

I have no need to download any compass app :-)

Using a compass app on your phone actually tells you very little.
It can be out of calibration just the same as the quad can be.
Taking a horizontal reading is also non conclusive.
The magnetometer measures the magnetic field in 3 axis, x,y and z.
Just comparing the horizontal reading tells you only that it's roughly the same when the quad is perfectly level.
Unfortunately quads pitch and roll to initiate movement (and stay in position), which is why, during calibration, you have to turn the quad in the x plane then the y and it integrates the two to give you a "spherical" calibration offset table.
You' can tell more about calibration performance just by lifting the rear legs and pitching the quad forward, than you ever will by comparing two different electronic compasses, calibrated differently.
You're better off using a real compass, and keeping it well away from the quad :)
Ok will try to match reading with real compass. However hubsan suggested me to upgrade it with old firmware.

3108vibhash
Posts: 124
Joined: Wed Oct 24, 2018 7:52 am

Re: Zino Crashed again - Usteady Drone

Post by 3108vibhash » Sat Dec 15, 2018 7:47 pm

Tried the caliberation with actual compass today. The flight went much better , did not get toilet bowl effect. however still at low height (<2 m) not very steady but mangeable. Will do anotehr flight tomorrow if weather is good. Hopefully it has been fixed. :)

MrDronenut
Posts: 97
Joined: Sat Oct 27, 2018 3:23 pm

Re: Zino Crashed again - Usteady Drone

Post by MrDronenut » Sun Dec 16, 2018 11:40 pm

Since it has no optical flow sensor,it will not perform close to the ground. Prop wash.

Hubsan-Ailsa
Posts: 1027
Joined: Mon Apr 16, 2018 10:43 pm

Re: Zino Crashed again - Usteady Drone

Post by Hubsan-Ailsa » Mon Dec 17, 2018 2:58 am

Hello 3108vibhash,

Kindly update the FC firmware to the latest one and I email you.

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