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Rate is not smooth on my helicopter.Log with bitmask 131071 attached

June 1, 2020, 6:42 pm
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@ninja_zx11 wrote:

Hi Bill and Chris,
After my first successfull setup,i am moving forward to the first step of tuning.My Rate is not smooth in my logs.My head speed is 2400 RPM and i have applied notch filter like this:
notch

When i give stick movements,its kind of oscillates and then stables itself.I have logged with log bitmask 131071.

Could you please help me with my first step of tunning.Heli is electric Blade450 with flybar with a castle esc using esc governor with fixed RPMs.Thanks.

Log before applying notch filter

Log after applying notch filter.

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Joystick throttle hold function

June 1, 2020, 10:06 pm
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@Ricoman wrote:

The futaba 14sg remote controller has throttle hold function.

I set this with the remote controller.

I replaced the remote controller this time.
Logitech joystick.

There is no way to set the throttle hold function on the remote controller.

When operating with joystick and button, can i set the throttle hold function and spooling up function?

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Arducopter without usingmavproxy

June 2, 2020, 1:08 am
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@ayemaw wrote:

hello, i want to ask related with Arducopter (SITL) RC Input. Before i using mavproxy and send RC_input from my GCS by using UDP:5501 . it was working well.
But when i tried to run ArduCopter.exe file directly on cygwin (using ./arducopter -O-34.98106,117.85201,40,0. --model quad) and send RC Input (UDP:5501) from my GCS) but it not working and affecting at all.
So, basically we can’t run like that without mavproxy?
i am very new in ardupilot so dun understand well about mavproxy and ardupilot interaction.

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Regarding LGR_DEPLOY_POL

June 2, 2020, 1:42 am
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@Raphael_PARK wrote:

Hello there,

During configuring my landing gear of Octocopter (DJI S1000 Platform) I do not understand regarding to LGR_DEPLOY_POL.

I read several times but could not understand what is the role of this.

Could anyone explain me?

Thank you.

  • Raphael

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Omnibus F4 AIO Accelerometer issue

June 2, 2020, 2:00 am
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@carl wrote:

Screenshot 2020-06-02 at 09.53.33
Screenshot 2020-06-02 at 09.53.33570×578 506 KB

Hello. I have an Omnibus F4 AIO purchase from BG:

I am able to install Arducopter. However the accelerometer does not work out the box. If I try to calibrate it then the board locks out and crashes mission planner. I have tested it in iNav and it works fine.

Any suggestions?

The BG description suggests its an AIO with a current sensor? So should I try the Omnibus f4 pro firmware?

Thanks

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Crash first flight: ardupilot 4.0 help!

June 2, 2020, 12:06 pm
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@KbOo_Ze wrote:

Hi,

I crash my new drone during the first flight.
it is an F450 frame, Pixhawk 2.4.8, I upload the 1M version of Arducopter, the battery is a 3S 5000mAh fully charged.
When I start, it was in Altitude Hold mode, I had a buzzer on the battery in case the voltage is to low, in the video you can hear it, and at the same time I lost control, so I stop the motors.
I guess I have an issue with the battery, can you help me to do the analysis of the logs? I also saw an issue on Kalman filter, but I don’t know if I read it correctly

Video: Youtube link

Logs: download

Thank you for your help

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Unsteady descent resulting in near crash

June 2, 2020, 1:46 pm
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@vonfrank wrote:

Hi, I am pretty sure this has nothing to do with v.4, but I didn’t know where to put my topic.

After a small break from the hobby, I decided to reflash my old F550 and do a new configuration, as I have never really been satisfied with my configuration.

My F550 experienced had a near death experience, after a successful autotune. I did an autotune with all settings as described as the documentation suggest, and the aggressiveness of the autotune set to default. Everything went great and I was pretty happy with the tuning. It flew very well. It was a calm evening.

But when I decided to do a fast descent which I did notice was a bit unstable, it almost went wrong. When I raised the throttle to maintain the altitude the vehicle started banking from side to side (90* bank angle, to 90* bank angle opposite) for a looooong time (seemed like forever). I went into panic and accidentally hit landing gear switch, tried to change mode, but nothing helped. The autopilot kept things in “control” and suddenly it went into a stable hover…

I have attached my log file and parameters, if anyone could give it a look, and give suggestions for what to change, it would be appreciated. Do I need a more/less aggressive autotune? I know I could change the decent rate but it wasn’t even going that fast so I would prefer to fix the problem, rather than hiding the problem.

Hardware:
DJI F550 frame
Tmotors (MN3110-15, 780kv)
10" master airscrew props
Cube Black (with all imus running (mask set to 7)
Mauch PSU
Here GPS
SimonK ESCs (working fine, never had desync)
5000mah 5s graphene lipo battery.

Any help is appreciated. Thanks…

Log and parameters:
https://drive.google.com/drive/folders/1LwYMlUnNhGwd79mzf-Vfkh1PL7m4SAFI?usp=sharing

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Camera functions with Dronekit and Raspberry pi

June 2, 2020, 4:25 pm
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@wiyoung wrote:

I need to trigger a camera with a raspberry pi, because the Orange Cube does not offer support for the camera I am using. I have looked into the Dronekit API. Does anyone know if I can use DroneKit to “monitor” mavlink for the do_digicam_control message?

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Logging RAW_IMU to SD card

June 2, 2020, 6:54 pm
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@akobelan wrote:

Is there any “easy” way to log RAW_IMU data to the SD card on PixHawk 2.1? I can get it via TELEM1 (tlog), but I’d rather have it logged to SD card directly.

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A compile error about sitl

June 2, 2020, 9:05 pm
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@githublearner-li wrote:

I setup the ardupilot SITL following this tutorial(https://ardupilot.org/dev/docs/setting-up-sitl-on-linux.html).
When I run the command ‘sim_vehicle.py -w’, a compile error occured like below:

 ......
[616/697] Compiling libraries/AC_Avoidance/AP_OAPathPlanner.cpp
[617/697] Compiling libraries/AP_ADSB/AP_ADSB.cpp
[618/697] Compiling libraries/AP_GyroFFT/AP_GyroFFT.cpp
[619/697] Compiling libraries/AP_RCTelemetry/AP_RCTelemetry.cpp
../../libraries/AP_GyroFFT/AP_GyroFFT.cpp: In member function ‘uint16_t AP_GyroFFT::run_cycle()’:
../../libraries/AP_GyroFFT/AP_GyroFFT.cpp:387:33: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     if (gyro_buffer.available() > _state->_window_size + uint16_t(_samples_per_frame >> 1)) { // half the frame size is a heuristic
                                 ^
compilation terminated due to -Wfatal-errors.
cc1plus: some warnings being treated as errors

Waf: Leaving directory `/home/ubuntu-li/ardupilot/build/sitl'
Build failed
 -> task in 'objs/AP_GyroFFT/ArduCopter' failed (exit status 1): 
	{task 139976827606392: cxx AP_GyroFFT.cpp -> AP_GyroFFT.cpp.3.o}
 (run with -v to display more information)
SIM_VEHICLE: Build failed
SIM_VEHICLE: Killing tasks
SIM_VEHICLE: kill_tasks failed: 'Process' object has no attribute 'environ'

What can I do for this error, anyone can help me?

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What do you use for switching PIDs / failsafe voltages on the fly?

June 2, 2020, 9:09 pm
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@tenten8401 wrote:

Is there any decent solution out there for switching PIDs or failsafe voltages on the fly? I have a multi-purpose copter build that I’m wanting to run 2 different cell counts on and switch between tunes quickly without carrying a ground station around. iNav and Betaflight can switch pids quite well automatically and the voltage ranges are per cell, detected on startup.

I’m aware I could do this with scripting but my autopilot doesn’t support it and it seems like something that should be a feature if it isn’t already… Do you guys know of any good solutions that could be done without ground station intervention or scripting? Only real thing that’s coming to mind is adding on some external mavlink device but that seems kinda clunky.

I made an issue on GitHub (#14463) but I wanted to see if someone else ran into this issue and had a solution.

Thanks

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Pixhawk 2.4.8 + Radiolink TS100, auto mission crash

June 3, 2020, 2:36 am
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@antonrozum wrote:

Hello everyone, please help me understand the reasons for the crash of my drone, the crash happened at the final stage of the short test auto mission, the drone stopped moving at waypoints and just slowly descended and crashed into the garage door.

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Crash during auto mission beacause of landing

June 3, 2020, 2:58 am
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@Adelin wrote:

Hello,
It is possible to help me on a crash log ?
During Auto mission, far away from the base ans with no link between drone and i, we lost the drone.
After half an hour of research, telemetry have found the position of the drone.
The drone has dropped for 25 meters after touching a tree.
With the log i can see that during the auto mission, the drone drift from the original trajectory and after that, start a landing above the forest.
I think this is a problem of numbers of sat and when we don’t have enought, drone start a landing.
But in the log, we don’t have lost sats.
So is it possible to help me on this log ?
Here is the link to DL the log :


Thank you very much :slight_smile:
Best regards.

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NEO V2 Pro GPS (UAVCAN) no gpsv_acc or gpsh_acc

June 3, 2020, 4:21 am
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@VDLJu wrote:

Hi,

Setup:

  • Cube black
  • NEO V2 PRO GPS, UAVCAN
  • Firmware version 4.0.4 rc1 and 4.0.3
  • Power and telemetry trough USB
  • Nothing else in setup

I’m a bit concerned that if no accuracy estimate is available, how autopilot will behave on poorer GNSS conditions. That accuracy value is fed to EKF to my best knowledge.

Is this a CUAV software problem or not?

Caputure from MAVLink inspector.
c173247a935a4bbe4436f30d0e95cd11cdbeb7b0

Capture from UAVCAN inspector. As you can see the position covarience values aren’t as expected.

image
image705×399 10.4 KB

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Compass Not Healthy.. But it's disabled?

June 3, 2020, 5:47 am
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@LeeM wrote:

I keep getting Compass Not Healthy even though I’ve disabled all the compasses and even told it not to check the compass for Pre-Flight…

Any ideas?

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Battery Failsafe HUD Message

June 3, 2020, 8:24 am
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@manavgandhi17 wrote:

Hey all,

In recent flights I have noticed that the MP hud now states “Bad Battery” when the BATT_FS_LOW_ACT triggers. I was just wondering when the change from “Low Battery” to “Bad Battery” was made - because I was quite confused when I first got the message.

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SubSys:25 ECode:1

June 3, 2020, 9:30 am
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@danielhellin wrote:

Hi,

After update to FW 4.0.3, I notice some loss of thurst. Really I was doing some like sport flying but not too much agresive. The thing is I got “Potencial Thurst Loss” and “Subsys:25 ECode:1”.

Maybe I exceeded the drone’s flight capabilities, but in any case it never happened before.

Any comments?

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Lua script on a 3DR Pixhawk Mini No Scripts To Run Issue

June 3, 2020, 9:43 am
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@frankw wrote:

I Created the “scripts” folder in the APM folder and added Lua scripts one at a time (hello world etc) and tried multiple in the folder. I also enabled scripting. I always get the “no scripts to run” message.

Another piece of information just in case it matters, I had flashed my Taranis QX7S with a new firmware version and it no longer turns on. So I do not have any transmitter receiver link at the moment. I am just running the Pixhawk Mini with the USB cable.

My immense complements to the ardupilot groups…as a retired software engineer, this is cool stuff. I am very new to ardupilot and drones but very interested. I am working on a drone project with one of my sons. Thank you!

image

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RNGFNDx_WSC_ parameters

June 3, 2020, 9:51 am
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@danielhellin wrote:

Hi,

I can find RNGFNDx_WSC_ parameters. I trying to tune a sonnar to get less worng messures. RNGFND1_WSP_MAVG and RNGFND1_WSP_MEDF looks to help with this issure, but are not available in my parameter list.

I am using RNGFND1_TYPE = 2

Does these paramaters spacifically for other type of range finder?

Thanks

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Old Firmware Version

June 3, 2020, 11:06 am
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@Tasters_Choice wrote:

Hello,

I am trying to find the following firmware version:
ArduCopter V3.5.5 stable

I tried to find it here, but without success.
Is there a site the stores old versions of ArduCopter?
I would like to get the .hex file without connecting my Pixhawk 2 Cube to the internet.
Is it possible?

Thanks in advance !

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