71

Vehicles - MultiRotors / Re: Motor propeller axle is offset... Can I repair it?

« Last post by trust on July 30, 2022, 08:40:19 am »

Ditto on his suggestions. Another factor that I've seen is magnetic particles getting stuck inside motors on the magnets, and very hard to see. Sand is a killer, as it often has tiny iron particles that can get in there and stick to the magnets. Even just dirty areas may have tiny iron particles floating around. Very difficult to remove. Sometimes using compressed air blasted in there will move it out of the way. There are canned compressed gas "cleaners" that also might work.

72

Vehicles - MultiRotors / Re: Motor propeller axle is offset... Can I repair it?

« Last post by TheOtherCliff on July 29, 2022, 08:19:20 pm »

I have straightened bent shafts.  Spin by hand and/or slowly by battery.  It is not easy and requires careful attention...  It is good if it looks perfect to your eye.

Smooth shaft can be gripped with pliers through small piece of paper towel folded several times.  Threaded shaft you should usually put the spinner nut on and grip that with pliers through small piece of paper towel folded several times.

If it is grinding in some place it may just be dirt in the motor.  Dirt is usually obvious.  If it is obvious, take it apart.  Sometimes it is grub screws and sometimes E clips.  Else, it may be that a magnet has come loose.  Easiest is to buy a new motor.  I usually buy motors 5 at a time just for this reason (ESCs too)...

73

Vehicles - MultiRotors / Re: my Drone doesn't go straight up...

« Last post by TheOtherCliff on July 29, 2022, 08:13:00 pm »

Fix Instant Flip and Learn to Fly
https://forum.librepilot.org/index.php?topic=4408.0

74

Vehicles - MultiRotors / Motor propeller axle is offset... Can I repair it?

« Last post by Alex H. on July 29, 2022, 11:47:18 am »

Due to my drone pilot inexperience, I have damaged a little bit on of the motor propeller axle,
for which now when it's turning it is making a little bit of noise when throttle, and when hand turned I can feel it hanging in one place...

Is there a way to make the axle straight again, or should I buy a new motor?

75

Vehicles - MultiRotors / Re: my Drone doesn't go straight up...

« Last post by Alex H. on July 29, 2022, 11:37:22 am »

Yes you are right one of the motors was turning in the wrong direction, but the propeller was the right one... now it's better.
Thanks!

76

Vehicles - MultiRotors / Re: my Drone doesn't go straight up...

« Last post by trust on July 29, 2022, 05:54:01 am »

Whenever testing a multirotor for the first time there are several things you should check:
1) Using very low throttle, pitch forward and see if the back two rotors speed up, front rotors spin down. And vise versa.
2) Using low throttle, roll left and right. Roll right, left side motors should speed up, right side spin down. And vise versa.
If they aren't you have your motor  connections wrong - fix that first.
If those are ok, then test yaw - on a floor like that, you should get it to slide and rotate left or right according to the direction of yaw with low throttle and no pitch/roll.
Do all these things before lifting off the ground. If they are fine, it should lift smoothly with no pitch/roll, just throttle.
Also, do you have attitude control set for pitch and roll, and rate set for yaw? If not it'll be a lot harder to control.

77

Vehicles - MultiRotors / my Drone doesn't go straight up...

« Last post by Alex H. on July 28, 2022, 04:37:33 pm »

Does anyone have an idea why is my drone behaving like in the video?

78

Vehicles - MultiRotors / Re: GCS Ubuntu + cc3d board

« Last post by Alex H. on July 27, 2022, 10:12:59 pm »

I found my problem:
Connecting your hardware from https://librepilot.atlassian.net/wiki/spaces/LPDOC/pages/57671696/Linux+-+Building+and+Packaging

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Vehicles - MultiRotors / GCS Ubuntu + cc3d board

« Last post by Alex H. on July 27, 2022, 07:51:43 pm »

Hi,
as I have switched to Ubuntu, I'm trying to connect my cc3d board to PC in order to configure it with GCS 16.09+r894.
Looks like the board is not recognized/seen by the software...
In dmesg I can see:

[ 2513.805164] usb 1-3.1.1: USB disconnect, device number 24
[ 2515.563930] usb 1-3.1.1: new full-speed USB device number 25 using xhci_hcd
[ 2515.690170] usb 1-3.1.1: New USB device found, idVendor=20a0, idProduct=415b, bcdDevice= 4.01
[ 2515.690175] usb 1-3.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2515.690178] usb 1-3.1.1: Product: CopterControl
[ 2515.690180] usb 1-3.1.1: Manufacturer: openpilot.org
[ 2515.690181] usb 1-3.1.1: SerialNumber: 52FF69064888555372650987+BL
[ 2515.764386] hid-generic 0003:20A0:415B.0016: hiddev1,hidraw5: USB HID v1.10 Device [openpilot.org CopterControl] on usb-0000:07:00.1-3.1.1/input0

Can someone tell me what should I do?

Thanks,
Alex

80

Vehicles - Ground / Re: Bait Boat - Is it possible to set waypoint by pushing a button?

« Last post by TheOtherCliff on July 19, 2022, 09:22:47 pm »

It would help to know exactly how you want to use this:
- in this run only, or come back to that place some other run or day?
- just station keeping there or a waypoint on a multi waypoint course?
- would it be OK to use the GCS before or after the run, just not during the run?

Are you aware that GPS readings for a single location can easily be different by several meters some time (hour+) later?  GPS is only accurate to about 5 meters.  Modern drones enhance this with visual recognition to land where they took off.

There is also a capability of running a python script.  That is associated with waypoints.  With writing a python script you have access to everything, including HomeLocation PoiLocation and the currently loaded waypoints.  Writing a script is a programmer thing though.  Script could be just "add a waypoint here then do X (say position hold till flight mode changes)"?  That would still require you to save the waypoints (using GCS) after the run if you wanted to use them another day.  To make it save/load to settings memory and not need the GCS at all would be a task for a developer who could work with the LP source code.

I don't think there is anything you can do to set a waypoint from a transmitter switch, but there is a thing called Point Of Interest POI in the flight modes.  I have never used it and am not sure what it does.  It may not be helpful in that it only keeps the vehicle (VTOL intended?) pointed at the POI?

There are also transmitter scripts that can be written and some already written on the internet.  That, combined with transmitter telemetry and a possible GPS addon for the Rx could do something, but that seems like a hack if you are using an FC already.