What's normal...?

[Tuna]

Some owners seem to have more problems than others when it comes to drifting and errors, so I wondered if it would show up in the calibration. My H has been flying very well lately, so I've just put it on a level (ish) surface in my house and plugged it into the Windows GUI. These are the readings:

Accelerometer:

X -15
Y -10
Z -1000

Gyroscope
X -3
Y 3
Z 1

Orientation
Roll 0.6
Pitch -0.3
Yaw 175.8

How do those figures compare with your machines? Post your results here! I've not reported the other numbers as they'll depend on where in the world you are. Nor have I looked at GPS - my readings indoors are all over the place.

As a side note, Yaw of 175.8 is probably about right, it's facing more or less south. Z accelerometer of -1000mG (ie. -1G) is correct for this planet

Another question - how do you switch your Typhoon on? It sounds silly, but when it first initialises, I assume it zeros various values. So I always put the H on a solid surface, and then just press the button without moving the machine. Then I usually end up leaving it there whilst I find where I put the ST-16... In other words, the H is always pretty much still when it starts up. I wonder if that helps?

 

[BobW55]

Tuna,
When I encountered drifting issues, it was the ST-16 and not my aircraft.
I could go into the hardware monitor and see that my ROLL axis would not always center.
Calibration of the ST-16 would solve it. Yuneec just replaced it for me due to other issues with it as well.

I start my H (power it on) in the position and location I intend to take off from. I do not move it at all.
I usually have the nose pointed near North. Will have to hook up my GUI and see if my numbers come near yours. Maybe a good way to tell if you did all the calibrations correctly.
I just up-dated my firmware, but have NOT calibrated yet. Will try and get a before and after.

 

[PatR]

Based on about 12 years experience with booting up UAV autopilots, not moving the aircraft after power up is everything to having a stable aircraft during flight. Instructions not to move the aircraft during boot up are standard with better documented systems. Yes, accelerometers do need to established a zero reference during the post power up sequence, and those installing props, raising arms, or otherwise moving the H during the boot up sequence will have less stable aircraft. BTW, turn on the ST-16 first and off last. It's critical to your safety and a practice that was learned by many the hard way in RC flight.


Sent from my iPhone using Tapatalk

 

[Graham]

Mine is flickering over a range of values. The Accelerometer Z value increased from about 110 to the value shown below during the period of recording.

Accelerometer
X - 15 - 17
Y - 18 - 20
Z - 1014 - 1016
Magnitude - 1013 -1017

Gyroscope
X - -2 - 0
Y - -2 - -4
Z - 0 - 1

Orientation
Roll - -0.1
Pitch - 0.1
Yaw - 87.1 - 87.2

Compass
X - -24 - -25
Y - -110 - -112
Z - 261 - 263

Pressure - 1028.21 - 1028.28
Temperature 40.3C (actual temp is 21C)
Height estimate - 0.00 - 0.09

My Typhoon H is stationary from switch on to a couple of minutes after camera connection while I make final checks.
HTH.