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IO uControler on Cube ChibiOS

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@abarnas wrote:

Hello
I want to change GPIO pin assignment (SPECTRUM_PWR_EN) for IOMCU, and previously when i used PX4Nuttx it worked but after migration to ChibiOS it has no impact on board. Where can I found board_config for IOMCU part on 3.9.8 using Chibi?

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Safety Switch controlled remotly

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@Spatz wrote:

Is there a Mavlink command to control the safety switch remotly?
Or is the only way to change the BRD_SAFETYENABLE parameter?
I know there is a command for dronekit. But I dont know what Mavlink command is used for that.

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Sf11/c update problem

Apm 2.6 Ignores mav_frame_local_ned

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@Omurcan wrote:

Hello, currently I am using apm with a rapsberry pi and do missions with dronekit python version.There is no problem when taking off and rtl mode but when I try velocity command drone does not move at all while flying.Anyone has an idea?

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RCTESTFLIGHT - Ardupilot Autonomous Soaring - First Test

Screen font/formatting problem after motors test

Pixracer and Compass Orientation - High Offsets from Compass Calibration

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@flyingw wrote:

Using Arducopter 3.6.8 (SingleCopter)

To fit the airframe better I had to mount the Pixracer pointing up. I set the AHRS_ORIENTATION to 24 for Pitch 90 degrees and all functions work correctly.

offset

I am using an mRobotics GPS/Compass unit and found that I get high offset values from a compass calibration procedure. I have no orientation configured for the compass; just straight ahead.

offset-values

Could the high offsets be caused by the fact that the flight controller and the compass are in different orientations?

(I’ve got good spacing and even a copper shield keeping RF from the other electronics away from the compass, and I calibrated out in an open field).

Thanks,

Paul

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Analyzing D-term noise

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@andyp1per wrote:

I have created a pull request https://github.com/ArduPilot/ardupilot/pull/11422 that allows you to visualize the noise in the D-term of the PID controller, both before and after filtering. @Leonardthall let me know if you think this is useful. Sample output from the fix looks like this

Note that I have applied a local fix to make the output into “gyros” so that mission planner can understand it. Also x == roll, y == pitch and z == yaw.

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Download dataflash logs failed since 3.6.9 upgrade

Crash: suspect Lidar-lite V2

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@Hquarter wrote:

Crash today with my Pixhawk1 Y6,
I need help with this crash analysis. Recently I changed my Lidar Lite V2 from PWM to i2c, got it to work with minor difficulty. After I noticed the dataflash log reported data from the Lidar even when it was out of range, or over the max altitude. As expected, the data becomes intermittent when beyond the expected range of the device. I posted the question on facebook page but had zero response. I concluded that the values may not be used by the flight controller just because the log recorded these values. Now I need to know the truth.

Today the flight was as expected until I reached 20m, that’s my max alt setting for the Lidar. Then I had an uncontrolled acceleration up to 400 feet, and nearly no response to my sticks. changed flight modes, regained some control, and ended up with a severe hard landing that resulted in hundreds of dollars in damage. My principle question is “how do I avoid this in the future?”

See below the plot of baro alt (the only correct reading) vs Lidar alt (over 20m data starts defaulting to zero) vs ctun alt (the alt the gps is using) vs. gps alt
It looks like the zero reading from the Lidar is being used by the ekf regardless of the fact that its over the max altitude. Ctun Alt is at or below zero when the craft was at 400 feet!!
Eventually it came down very hard with my throttle at max.

Dataflash log file: https://1drv.ms/u/s!ArlNBOsvq-8yomOBnKfSIqLfvwfG

Any advice would be very appreciated. Not sure how to proceed.
Thank You

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When calibrating pixhawk is battery power and usb power required

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@Colindo wrote:

Hi,
Is it necessary to have battery power connected when calibrating pixhawk 2.4.8
I thought that with the usb connected it supplied the power source from my computer.
I also thought that having both connected could damage the computer or pixhawk.

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Spline Waypoints with LiDAR Sensor in Terrain Mode

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@223Wylde wrote:

I have a Lightware SF-11C mounted on a 700-class heli, everything works well when flying flight lines in terrain following mode, but when in the turns when using spline waypoints, the angular distance increases and the heli descends, then climbs after finishing the turn. Are there any parameters to take into account the bank angle in the turns? Maybe there’s just no way to do this with spline waypoints?

I don’t have a gimbal for the camera mount, so the LiDAR sensor is just mounted to the underside of the frame on a fixed mount.

I imagine fixed wings would have the same issue but much worse, does anyone know if they’ve found a way to compensate for this problem?

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Forward STATUSTEXT to GCS

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@TiffanyKalin wrote:

Hi, I am receiving STATUSTEXT messages from MAVROS successfully in Ardupilot. I would like to forward those to my GCS. I have configured my “–out IP:port” correctly as I am receiving other information in the GCS such as battery status, HWstatus, meminfo, etc. I would now like to have the STATUSTEXT messages also show up on my GCS. I’ve seen how i can use add the “-f” flag to mavlink command for PX4, is there something similar for ArduPilot?

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Intrgrating ardupilot with my website

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@Jay_kishan_Panjiyar wrote:

Is there any opensource which can be integrated with my website such that on a click it would open and work as normal. I am planning to build a website where the traffic will be monitored and the density of traffic will be predicted using deep learning hosted on the Amazon cloud platform. so any open source that can be integrated would be helpful. please give me a better recommendation.

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Hardware recommendation

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@Jay_kishan_Panjiyar wrote:

my project is to direct the controls of drone from Raspberry Pi(RPI) to Amazon cloud and run the drone on auto mode using my website using dronekit(i.e running python scripts). the python scripts will be run on cloud and their output will be seen on the website. suggest me the best hardware in the economical range of 50$.

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First Flight with HEX 550. Throttle uncontrollable

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@dklamet wrote:

Hex 550. Pulled it back out after not flying for a couple of years.
Just installed 3.6.9
Flew this frame, ESCs, and motors a few years ago. No problem with default settings. Different FC in different position with vibration damper (didn’t have before).

With props off, motor speed increases steadily (from sound and servo outputs viewed in mission planner) before and after.

First flight, gradually throttle up, suddenly throttle either off or (apparently) full on. (Miraculous landing with no damage).

I think the log file also shows the testing after with props off, gradually increasing throttle input.

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Mission planner packet signing

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@amitmanish wrote:

Hi,
I have trying the malvink 2.0 signing feature. I followed the steps as below:

  1. selected mavlink 2 on serial port 1.
  2. opened signing window on mission planner and entered friend key and parse key and finally after key is generated, clicked on use and save button.
    But i am clear about how to test it. My doubts are:
  3. Once i activated the key, will my pixhawk connect only to authorised mission planner(the one that has the key) over usb and rf channel.

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Can't downlaod hex files

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@lsm6525 wrote:

Hi, I’ve just started learning about drones and I tried to download omnibus F4 pro hex files.
I can download a .apj file but can’t download hex files. They only open in a browser.
How can i download hex files? Does it need another programms?

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Mounting the flight controller away from the centre of gravity

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@disgruntled-patzer wrote:

Hello, I am preparing to mount a Cube flight controller on my quadplane (which was redesigned after a previous crash in the following post).

I notice from the following documentation that the flight controller should ideally be mounted within a few centimetres from the centre of gravity. However, due to mechanical limitations, there is a possibility that we might have to mount the Cube away from the plane’s centre of gravity.

I have three questions:

  1. Does mounting the flight controller away from the CG have an effect on the aircraft’s flight behaviour? And if it does, how is the behaviour affected?
  2. Is there any rule of thumb on how far the flight controller can be mounted away from the CG?
  3. Are there any parameters in ArduPlane that allow us to specify the linear offset of the flight controller from the CG (if needed)? I have previously tried to search but could not find such parameters

Thanks (:

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Adjust Servo Output on Mission Planer with Omnibus F4 V3

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