Flying without GPS or compass

mr_byte31 · November 18, 2024, 12:45pm

Hi,

I am very close to finish my first quadcopter (F450 Frame) but it always flip over.

I did calibration to accelerometer and made sure the motors spin in correct direction ( CW and CCW).

I didn’t connect GPS or external compass at the moment and didn’t do any special configuration for that. I am not sure if the EKF3 would have issues because of this.

any idea how to figure out the source of issue ?

dkemxr · November 18, 2024, 1:20pm

It’s usually wrong motor order. Use Mission Planners Motor Test to confirm proper order.

amilcarlucas · November 18, 2024, 2:01pm

Put a compass and GPS on it. Then tune it. Once tuned, remove the GPS and the compass.

Otherwise you are just asking for problems and pain.

mr_byte31 · November 18, 2024, 3:10pm

I made sure I have the following motor directions and each number reflects the channel on my Pixhawk (motor A is on correct location and it is connected to channel 1 on my pixhawk) :

dkemxr · November 18, 2024, 3:22pm

Did you confirm with Motor Test?

amilcarlucas · November 18, 2024, 3:44pm

The correct order is ABCD, not 1234!

mr_byte31 · November 18, 2024, 3:47pm

what do you mean by confirm motor test?
is there anything I need to click ?

mr_byte31 · November 18, 2024, 3:48pm

sorry, I didn’t get you.

I click on motor A to test and motor A is connected to CH.1 on my pixhawk.
then move to motor B and it is connected to CH.4 and so on…

correct procedure?

dkemxr · November 18, 2024, 3:54pm

Read the docs, bottom of the page.
Motor Test

mr_byte31 · November 18, 2024, 4:04pm

I think I followed all the steps in the link.

dkemxr · November 18, 2024, 4:06pm

Simple question. Did you run Motor Test in Mission Planner?

mr_byte31 · November 18, 2024, 4:48pm

yes of course.
I made sure the rotation of motors and their location are correct

amilcarlucas · November 18, 2024, 4:52pm

I would love to get 1€ for every time a user tells me that and has got it wrong

mr_byte31 · November 18, 2024, 5:04pm

I pay you incase you are correct. Just prepare your paypal

I noticed I have this issue on the screen.
EKF3

it says EKF3 Yaw inconsistent 160 deg. any hints ?

amilcarlucas · November 18, 2024, 5:08pm

Like I said:

add a GPS and a compass
go outside and calibrate the compass after having a GPS fix.
Perform all the steps using the Ardupilot methodic configurator
Remove the GPS and compass
Change the parameters to fly without GPS
Have fun using stabalize and AltHolf fligth modes

mr_byte31 · November 18, 2024, 5:10pm

ok. I have to work on solder my wires for GPS.

for step 5. how should I do it ?

amilcarlucas · November 18, 2024, 8:02pm

You should cross that bridge only when you get there.

mr_byte31 · November 18, 2024, 9:37pm

Ok. I added a GPS and compass to the setup.

I calibrated the compass and I could get GPS count =4 indoor.

I am not happy with my calibration but can’t get better than this.

any more suggestions ?

mr_byte31 · November 18, 2024, 9:48pm

I made a video for the propoller rotations.

some propellers didn’t run from the beginning. this is the first time to happen with me.

dkemxr · November 18, 2024, 9:59pm

Why are you not using Motor Test in Mission Planner for this?
And why are you posting at all until you have completed The Configurator?