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Crash without any indication

April 15, 2020, 7:11 pm
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Unable to find certain parameters

April 15, 2020, 11:28 pm
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Small drone. motor burned (motor output log is included)

April 16, 2020, 1:24 am
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@HAESOLKIM wrote:

Hello,

I try to make indoor drone with two lidar(first lidar is downward for altitude and optical flow, second one for forward(or 360 lidar) to avoidance). However, The two motors was burned and motor output log was fluctuating bottom to top. Copter Specification is below.

FC : pixhawk 2(v3.6.7)
ESC : AK32 4in1 55A (2S-6S)
MOTOR : [X-nova] 2208-1900kv Lightning V2N
PROP : [GEMFAN] Hurricane 51433
BATT : [Dinogy] 1600mAh 6S 130C Platinum Graphene-2.0

rc out fluctate
rc out fluctate2931×1083 483 KB

1 1980-01-01 오전 9-00-00.bin.zip (545.9 KB)

1 1980-01-01 오전 9-00-00.bin.log.param (14.0 KB)

using basic damper(blue) for FC, finished basic tune page in Docs.
Each Motor has plastic damper.
drone fly okay but it twitch a little bit.
and why is acro mode try get level attitude??? (Seems like slow stablize mode)

Next Step

INS_HNTCH_
INS_NOTCH_
INS_ACCEL_FILTER
INS_GYRO_FILTER
SCHED_LOOP_RATE
ATC_RAT_XXX_FF

What can I do? Now I cant try longer cause of burned motor. I bought same motors.

Please advice me about this.

Thank you for taking time for this.

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Flight stop after SET_POSITION_TARGET_GLOBAL_INT

April 16, 2020, 2:38 am
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@bull wrote:

Hi All

https://ardupilot.org/dev/docs/copter-commands-in-guided-mode.html#copter-commands-in-guided-mode-set-position-target-global-int

I was flying with the SET_POSITION_TARGET_GLOBAL_INT command.

And I want to stop flying.

So, I used DO_PAUSE_CONTINUE. (All parameters are 0)

However, the flight does not stop.

SET_POSITION_TARGET_GLOBAL_INT Code

        MAVLink.mavlink_set_position_target_global_int_t setPosition = new MAVLink.mavlink_set_position_target_global_int_t();

        setPosition.target_system = (byte)sysid;
        setPosition.target_component = (byte)compid;
        setPosition.time_boot_ms = 0;
        setPosition.lat_int = (int)(x * 10000000L); //lat
        setPosition.lon_int = (int)(y * 10000000L); //lon
        setPosition.alt = z; //high m
        setPosition.vx = 0;
        setPosition.vy = 0;
        setPosition.vz = 0;
        setPosition.afx = 0;
        setPosition.afy = 0;
        setPosition.afz = 0;
        setPosition.yaw = 0;
        setPosition.yaw_rate = 0;

        setPosition.type_mask = 0b0000111111111000;// (ushort)(MAVLink.POSITION_TARGET_TYPEMASK.X_IGNORE| MAVLink.POSITION_TARGET_TYPEMASK.Y_IGNORE| MAVLink.POSITION_TARGET_TYPEMASK.VX_IGNORE | MAVLink.POSITION_TARGET_TYPEMASK.VY_IGNORE);
        setPosition.coordinate_frame = (byte)MAVLink.MAV_FRAME.GLOBAL;

DO_PAUSE_CONTINUE Code

        MAVLink.mavlink_command_long_t req = new MAVLink.mavlink_command_long_t();

        req.target_system = sysid;
        req.target_component = compid;

        req.command = (ushort)MAVLink.MAV_CMD.DO_PAUSE_CONTINUE;
        req.param1 = 0;
        req.param2 = 0;
        req.param3 = 0;
        req.param4 = 0;
        req.param5 = 0;
        req.param6 = 0;
        req.param7 = 0;

I want to stop flying.
Please tell me how.

Thank you all.

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How to brake faster in PosHold similar to Loiter

April 16, 2020, 5:13 am
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@gnitzan wrote:

Hi, I have noticed that when I fly fast in PosHold, copter keeps on going for about 10-15 meters when I let the stick jump to middle and I am sure I did not see the copter leaning 30deg to break. In Loiter it stops on almost instantaneously (I know loiter speed much slower).
My current parameters which I believe to be the default:
PHLD_BRAKE_ANGLE=3000
PHLD_BRAKE_RATE=8

What is the best way to go with this?
Thanks, Gal

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Know more about circle mode

April 16, 2020, 6:41 am
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@Moksh wrote:

Hello everyone I want to know more about circle mode , i know there is exist circle rate but i don’t have PC and laptop so all time I’m pushing in mobile app QGC. There is exits only circle radius and circle rate , many experiment i get it when circle distance 10m then circle degree is ~70° but after many experiment i fond it 74° is best.

Screenshot_2020-04-16-16-40-48-278_org.mavlink.qgroundcontrol
Screenshot_2020-04-16-16-40-48-278_org.mavlink.qgroundcontrol2340×1080 250 KB

QGC Advance -> circle -> circle rate (i think channel define) , i also define channel for circle change rate but not working also change roll and pitch not work.

Need :- i want to need my copter current position to select area and trigger circle and bhoooom. Like this

Google Photos

Thank you :slightly_smiling_face:

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My new build 550 drone with pixhawk starts rotating during flight and crashes

April 16, 2020, 6:50 am
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@robertocopter wrote:

Hello,
I have just finished building my first drone. It lifts off ok and seen to be stable ( I use stabalise mode). However after a few minutes in the air it is not controlable anymore and starts to make circles. By pulling the throttle down I was able to save my drone.
I have looked in the logs and think I see some “strange” behaviour in RCin RCout (especially motor 3)
Can one of the more experienced drone pilots help me out and analyze my log?

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Meaning of OH param in datasheet

April 16, 2020, 8:27 am
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Problem with compass RM3100

April 16, 2020, 9:44 am
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@Corrado_Steri wrote:

I updated one of my machines today to latest 4.0.3 stable release. Everything went well and it flew good. Didn’t touch anything upgrading from 3.9.11.

Finally i was able to put a drotek RM3100 compass to work, i calibrted it and it was successful with very low off sets. Right after calibration i went to mission planner tuning and selected mx, my and mz , to look at how the axis where moving during rotations. I noticed i have a BIG interaction between axis. If for example i rotate the copter on the table i see 2 axis moving by about the same amount, while i was expecting that each axis would have moved on the screen only when the drone was rotated along that axiz. Basically what i see is interaction. I than test flew it and it did pretty well in flight (loiter rock solid with no sign of toilet bowl) but EKF for compass was all over the place.
I have authomatic correction and fix of axis enabled, could it be it doing some strange things? Tomorrow i’ll try an inflight calibration and see if it gets better.

Any help would be greatly appreciated.

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New flight mode without Mp or QGC

April 16, 2020, 9:54 am
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Trying to Understand Internal & Exernal Compasses

April 16, 2020, 12:20 pm
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@vyoufinder wrote:

I am unsure if I have my compass settings correct, and for the life of me, I haven’t been able to understand how all the settings are working together, or if in fact they are. Particularly, if my external (addon) compasses are being used or not, and in which order.

When I installed ProfiCNC Hex Board with Orange Cube, I also installed two additional compases; a NEO-M8N GPS module with compass, and 3DR GPS and compass that came with my original Pixhawk1. The NEO-M8N is plugged into the GPS1 port on the Hex Board, and the 3DR is plugged into the GPS2 port of the Hex Board.
6c020e1e33c24df39aad72c864b39920

I’ve searched my .params for COMPASS_DEV_ID, and I show three compasses, but I think those are the internal compasses. In other words, these are physically located inside my Orange Cube? - is this correct?
3compasses
Then I show two External compases; COMPASS_EXTERNAL & COMPASS_EXTERN2
compassextern
These, I think are my external compasses I added - right?

Where it gets strange to me is when I physically disconnect the two additional, externally mounted GPS/Compass units I added, COMPASS_DEV_ID2 & COMPASS_DEV_ID3 get “removed” (value changes from “1” to “0”) and COMPASS_EXTERN2 remains (value is still “1”).
compass_DEVremoved)
compass_externremoved
On the “Compass” page of Mission Planner looks like:

compass
compass935×229 30.4 KB

SO to me anyway, this looks like after disconnecting the two gps/compass units I added, I have two compasses, one as COMPASS_DEV_ID & one as COMPASS_EXTERNAL, but then on the “Compass” page in Mission Planner, it still shows three, which further confuses my understanding of what is going on.

Can anyone explain how this is working to me? I’ve searched and read about the compass .params quite a bit, but it’s just not making clear sense to me.

Then the real question I have, which got me started into this: My parameter, COMPASS_TYPEMASK is set to “32”. When I looked up this parameter in the Complete Parameters List, I see:

COMPASS_TYPEMASK: Compass disable driver type mask

Note: This parameter is for advanced users
This is a bitmask of driver types to disable. If a driver type is set in this mask then that driver will not try to find a sensor at startup

I’ve also searched the forums quite a bit about this, but I don’t understand what “32” is disabling, if anything. Basically, is this right?

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RPLidar S1 support

April 16, 2020, 1:37 pm
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@Corrado_Steri wrote:

Is support for RPlidar S1 in latest 4.0.3?
I need to start testing on obstacle avoidance hardware and the new rplidar s1 looks good, small and lightweight.

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Lua Script Missions Planner REPl Failed to start

April 16, 2020, 2:44 pm
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@MadRC wrote:

Hi guys, I’m starting to play with some of the lua scripts and was trying the REPL however I cant get it to start, im just getting REPl Failed to start .

This is Cube Orange on Copter V4.0.3 and scripting is enabled.

I’m connecting via USB as well to the controller

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Normal Switch instead of usual Safety Switch

April 16, 2020, 4:59 pm
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@ZECPLUZ wrote:

Is it possible to use a normal switch (on/off) instead of the usual safety switches? How do I have to wire the switch then? What do I have to change in Mission Planner?

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Disable RCx When Disarmed?

April 16, 2020, 5:12 pm
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@vyoufinder wrote:

Is there a way to disable RCx input when disarmed? I want to disable RC9, which is my landing gear, unless the copter is armed.

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Not finding Parameters; AVD_W_ACTION, AVD_F_ACTION, or AVD_F_RCVRY

April 16, 2020, 5:15 pm
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@vyoufinder wrote:

Setting up my ProfiCNC Hex Board with Orange Cube, when I do a search on my Full Parameters List, I am not finding:

AVD_W_ACTION
AVD_F_ACTION
AVD_F_RCVRY

Are these features implemented yet? Should I be asking this in the Mission Planner forum instead, since I am using that?

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Sudden engine shutdown, what causes?

April 16, 2020, 9:42 pm
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@Ricoman wrote:

Hello everybody.
The man flying my helicopter this time experienced a sudden engine shutdown.
As a result of the inspection, it was confirmed that the connecting rod was damaged.
I am not sure what is first.
Confuse whether the connecting rod is broken and the engine is stopped, or if the engine is stopped and the connecting rod is broken.
What factors cause the connecting rod to break?

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Requesting for Dataflash Logs

April 16, 2020, 10:57 pm
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@Anthony_Leung wrote:

Hi,

It’s my first time posting on this forum so please correct me if I am not following the community guidelines.

At the moment i’m working on a Thesis project for uni and I am in need for dataflash logs about power.

I’m lacking the tools to record this data myself and limited by the restrictions of COVID-19. I was wondering if anyone could provide some of their old .bin files that has data on CURR (and any other features) recorded for me to work on?

I am trying to implement a machine learning algorithm to better work on power management. Happy to show you if you ask!

Thanks.

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Power Distribution Boards for 80 AMP+ ESC's

April 17, 2020, 12:50 am
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@iSkyMaster wrote:

I am curious what people are using for 80+AMP multiple ESC setup hexa copters, planes etc. for power distribution from 4S to 6S or even 8S.

Most products I see are rated for very low current, mostly because they are PCB board designs. See examples below.

Then we have This. As its a passive design I think it can handle fairly large amount of current draw.

image
image600×600 54.3 KB

This company claims it can support 250A

image

This company claims 300A support

image
image800×800 121 KB

here is another, passive design.

image
image1000×1000 177 KB

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Using IMU as yaw source in EKF3

April 17, 2020, 5:20 am
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@Huibean wrote:

I am testing indoor positioning in ArduCopter, when using positioning system like UWB,there is not yaw data, and it’s not stable using compass indoor, so it seems possible to use original IMU heading as north and input xyz via fake gps

First Testing in SITL with Airsim

params change, still use compass

  • EK3_ENABLE=1
  • EK2_ENABLE=0
  • AHRS_EKF_TYPE=3
  • EK3_GPS_TYPE=0
  • EK3_ALT_SOURCE=2
  • GPS_TYPE=14
  • GPS_DELAY_MS=50

Then drone can hover for 1 minute, then make a circle and crash, maybe the compass offset problem?
log link https://drive.google.com/open?id=1sYlc6kLVrT2E_rLW_zkU5bzcw0LftKHF

WechatIMG188
WechatIMG188850×326 245 KB

disable compass

  • COMPASS_USE=0
  • COMPASS_USE2=0
  • COMPASS_USE3=0
  • EK3_MAG_CAL=5

Now it always show Need 3D fix that I can not arm the drone, what should I do to fix this?

WechatIMG191
WechatIMG191850×325 90.1 KB

log link https://drive.google.com/open?id=1Yr14ZuDEyh_cH18Zxsj5-fQVjs3oF90C

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