New to the scene, I have a Holybro x500v2 running ArduCopter V4.5.7 I went through the setup process and for some reason when I try to takeoff, it wants to lean to the right side and tip over. I have calibrated ESC’s as “normal” type, it has 20A 4S BL-HELI_S ESCs I believe. Motors spin in correct order. I have calibrated the Accel, level and simple accel multiple times. I’m at a total loss. If I arm with props off, the motors on the right seem to be spinning less. Any help is greatly appreciated.
9 times out of 10, the problem is motor order or direction. Not saying that’s the problem here, but …
The X500 has the motor numbering on the top plate. Make sure that is correct. Then use the motor test function in mission planner. When you test motor A (Front right when looking from the top down), motor 1 will run. then it goes around clock wise. Motor B is 4. Motor C is 2. Motor D is 3.
Is your ESC a 4-in-1 or are you using 4 individual ESCs? I ask because 4-in-1 ESCs usually have Betaflight numbering marked on them and that’s different from Ardupilot.
Testing with the props off doesn’t tell you much because the control loop isn’t working as intended and the results are almost random and useless. The motor test in mission planner is the important one. (I get it, it’s fun to do, but just realize it isn’t telling you anything)
Also check that your radio doesn’t have any trim set up. Look at the RC calibration page and make sure that the green bars are all in trim when the sticks are neutral.
Thanks for the reply. I double checked my motor orientation and it is what you said. I do not see any trim in the transmitter setup. Here is two videos that show my issue.
The ESC’s are individual. It’s the holybro development kit. Motors were pre installed on arms and numbered for install.
Any help is greatly appreciated
I understand. Thank you Dave. In the above video, I do motor test with mission planner. Everything seems correct however when I put props on and go to test fly, the quad tilts to the right and tips over.
OK, you may have a problem but this test doesn’t tell you anything other than the motors spin and in what direction. Post your parameters file, perhaps it will show something obvious.
What Flight Controller is this?
It looks like a typical default config for a quad but not sure of the Accel calibration. Are you doing the full 3-axis calibration (6 positions)?
@GPS_Denied are you a newbie user, struggling to get the drone configured, and having difficulties finding the relevant sources of information, and struggling to find the correct sequence of steps to get the job done?
We all been there, and suffered that pain. And that is why some ArduPilot developers got together and created ArduPilot Methodic Configurator to specifically address the pain points above.
The wiki is good, but it is a lot to absorve as it contains over 800 webpages. The software above guides you in a semi-automated way trough the process presenting you only the relevant information for the step at hand, no more, no less. It also points to the relevant webtools.
Thank you so much! I changed the 3 parameters you listed and ran the calculate initial parameters. I also re-ran the radio calibration. I am using a TBS Tango 2 RC with crossfire running SBUS output. I am now getting “Pre-arm battery unhealthy” error
Try plugging in the battery first before connecting to USB and see if that goes away. The battery params look fine. And sometimes on start up it takes a second for that to clear.
You should also really consider the tool that @amilcarlucas recommended. It prevents a lot of these basic issues.
