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Aduplane 3.9.2 issue?

October 22, 2018, 4:51 am
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@Rustycraft wrote:

Hi, I’m using arduplane 3.9.2 so in my flight automisson the plane started loitering using loiter_to_alt command to 2000m, so for some reason the connection betwin tx and rx was lost and the plane turned on RTH mode but did not stop climbing, the reached altitude was 1000m and home alt was 100m. After that I reconnected RX and TX (after 5 min) and find my plane was still climbing in RTH mode in RTH loction the alt was 1300m, I turned FBWA mode glided down and then again turned RTH mode, so the plane glided down and loitered on 100m as normal RTH mode. Not sure what coused this. the Loiter point was very close to RTH point, or the plane wanted to gain the alt and than glide down in RTH alt…?

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CRRCSim as SITL simulator faulty

October 23, 2018, 2:04 am
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@AlexP wrote:

I wanted to use CRRCSim as SITL simulator with Arduplane.
I have downloaded the latest CRRCSim source and compiled on Linux, as described here:
http://ardupilot.org/dev/docs/simulation-2sitl-simulator-software-in-the-loopusing-using-the-crrcsim-simulator.html

It looks like the CRRCSim source from Github mentioned in the article is seriously outdated. It has timing issues with video and doesn’t even run properly when standalone, in keyboard mode, or joystick, or mouse mode.
The original crrcsim-0.9.13 latest source on Sourceforge https://sourceforge.net/projects/crrcsim/files/crrcsim/crrcsim-0.9.13/ compiles and runs well, but doesn’t have the arduplane communication module included. The same about the Debian / Ubuntu packages, no arduplane communication.
@tridge, anyone,
Is there any fresher source? with APM/Arduplane communications module?

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Arduplane with RealFlight 8

October 23, 2018, 7:45 am
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@Chriscain wrote:

Hi, I have set up the sim environment in cygwin on windows 10 and got the RealFlight link
Running it all seems to work, mission planner shows connected etc.

I can now fly a plane around in manual mode and Mission planner tracks and all is good.

As soon as I switch to any auto mode FBWA, RTL etc the plane immediately goes to vertical, either vertically up or down depending on if the aircraft was nose high or nose low when I switch to fbw mode.

Flying in manual mode the attiude indicator in Mission planner and the ASI/Alt all read as expected.

Any clues as to what I am doing wrong ?

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Waving when in loiter

October 23, 2018, 10:07 pm
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@gediminasgu wrote:

Hello,

After changing motor for my plane (same model, just different motor), when the plane is in loiter it started to wave. It accelerates, pitching up, then deaccelerates and pitching down.

graph
graph.png1920x532 26.8 KB

Any ideas how to fix it or what to look for?

Thanks,
Gediminas

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Auto mode Spiral of death

October 24, 2018, 5:44 am
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@Jose_Alberto_Pereira wrote:

Hello guys
After about 100 autonomous flights my 1900 skywalker decided to crash.

He entered the death spiral and could not save it because I could not see it on the mission planner.

During the time that he worked he had three death spirals being able to save it twice turning off the automatic mode and manually piloting this time I could not see it because it was far away.

Now I need to set up another SkyWalker 1900 but I need to know why this happened.

Could someone help me with the log files?

Log files;

Bin LOG
https://drive.google.com/open?id=1KcTMagNxj3ntB6lsUsr5V5gb48057fHm

TLOG
https://drive.google.com/open?id=15lbq3tenKQkrKi2kCI74uFaWYJKkJk-i

In it I used the following components;

Skywalker 1900 frame
Original 3DR PIxhawk With gps / compass module
Digital Airspeed Sensor
Align DS415M Digital Servos
Engine - Tmotor
Futaba radio
RFD 900 telemetry
HobbyWing xrotor 50A ESC
Samsung camera for photogrammetry.

thank you

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Sdlog2_dump.py not working for arduplane.bin files

October 24, 2018, 10:58 am
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@Brian_Duvall wrote:

I have an interesting problem. sdlog2_dump.py scripts works for my arducopter.bin files but not arduplane.bin files. When I try running it with an arduplane.bin file I get stopped at

Exception: Unsupported format char: a in message ISBD (225)
There is no letter “a” in the class SDLog2Parser list maybe this is part of the problem.
Any ideas how to fix this or maybe its already done?
I have posted the link to the .bin file I am trying to convert. You will find it in the comments section in this link.

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Can't connect PX4Pilot after flashing Chibios

October 25, 2018, 3:14 am
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@007trains wrote:

I want to try Chibios on my plane but run into the same problem every time
I click upload V3.9.2 and when MP asks “Upload Chibios” I click yes, it flashes normally
After the musical tones my com port disappears and i cannot connect,
Rebooting the FC a couple times brings back my com port,
When i try to connect the window times out with “No Heartbeat Packets Received”
I have to reflash V3.9.2 to get it to connect again this time clicking no to “Upload Chibios”

My FC is a PX4Pilot from hobbyking (px4v2 presumably fmuV2?)
MP Version 1.3.59
Arduplane V3.9.2

Can anyone think why this is happening / how to fix this?

edit: tested Ardurover V3.4.2 and Arducopter V3.6.0 exact same problem

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Arduplane auto takeoff without mission planing

October 25, 2018, 5:53 am
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@osmancns wrote:

Hello.
I know that auto takeoff can work at only auto mode and to do this , you need to add a takeoff command with mission planner. But I want to this with only one button with my own ground station over mavlink or joystick.

for example : parrot disco

to do auto takeoff in disco, you push takeoff button and after launch disco. i mean that you dont deal with mission plan.

how can i do that as pratically ?

additionally, i send MAV_CMD_NAV_TAKEOFF via mavlink to plane but in auto mode no respond.

thank you …

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Help with log analysis after maiden crash in Autotune

October 26, 2018, 5:29 pm
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@Ant73 wrote:

Hi,

I am new to AP and I am hoping someone could help me analyse my [very short] log to see what went wrong.

Plane = Bixler 3
FC = Matek F405-wing
AP version = 3.10.0-dev

I have flown this plane a lot since I got it in February. I installed iNav [bc pixhawks are $$s] and it had been flying great until a launching mishap about 2 months ago broke the engine mount off. I decided to fix up a number of things on the plane that have been bugging me for a while but the main change was to install the new Matek F405-wing with arduplane.

I have spent a lot of time bench testing the setup including extended running times. I did have some issues with randomly getting the “No RC Receiver” failsafe. The only way I could find to fix that was to switch the SBUS wire to R2 (serial 2) where it would work fine, or to re-flash arduplane. I did the latter and, after a week of bench testing, the only issue I was still having was that occasionally SPort would drop the GPS sensor. According to mission planner the GPS is still working however, so I don’t think the GPS is at fault.

The flight.
Going against the plane docs, I decided to take off in manual mode. Take off was normal although the plane did seem a little sluggish. At about 20m altitude, I selected autotune. The plane pitched up vertically, stalled and nose dived straight into the ground. I was too slow to re-select manual mode and the plane didn’t seem to respond to any control inputs. In hindsight I should have climbed much higher than 20m but I was conscious that the docs recommend taking off in autotune and I wanted to get the tuning dialled in ASAP. Rookie mistake!

The carnage was the fuselage broken into two main pieces, the tail snapped off, engine mount broken off [again!] and two batteries crushed. The FC had some bent pins, which have straighten ok, but otherwise seems to be working fine. The interesting thing is that the camera (Runcam split 2) stopped recording at the exact moment that I selected autotune. I don’t know how these two things could be related, I don’t have any control setup for the camera, it is just on when the FC is powered.

I have looked at the log but there is nothing that jumps out at me as to the cause. Does any one have any ideas?

Thanks in advance.

2018-10-26 15-20-14.bin (432 KB)

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Skywalker X8 Flight Preparation Tips and Helps needed

October 27, 2018, 6:44 am
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@rijun034 wrote:

Hi,

Day after tomorrow I’m going for a Flight Test with my Skywalker X8 with Pixhawk 2.1 Cube and Li-Ion.

I have some doubts that still needs to be cleared.

  1. In case of any type of Failsafe the plane will go to RTL. But is the plane auto land in RTL mode or Loiter at some altitude above the Home Position??

  2. If I put the Flight Mode to RTL using Transmitter, will the plane Auto Land at Home location or still it Loiter above Home Position??

Please give an idea and some tips for this tests. My first plane got CRASHED after a failsafe. I lost the Log details on Pixhawk.

So, need to take more safety features for next flight.

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FX-79 Buffalo QuadPlane Conversion (Part 2)

October 28, 2018, 6:37 am
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@GregCovey wrote:

This is a continuation of the FX-79 Buffalo QuadPlane conversion from the original thread here in the Plane 3.8 forum. The newer VTOL forum is more appropriate for this topic and it allows us to change APM releases over time.

Our Fall weather this year in Upstate NY has been cold, wet, and windy, so it’s time to start catching up on building projects. I purchased 4 air speed sensors for different projects and decided to go with the older analog APM AS Sensors because they are less than half the price of their I2C counterparts. By creating your own 3-pin to R/C servo cable, you can effectively save $25 per AS sensor. I have been using the analog sensors for years without issue.

I found the AS sensor easy to mount by using one of the three air holes up front. The middle hole is meant for a camera but I have not used it yet. The FX-79 is big so you can mount the AS sensor in many places. I glued the metal pitot tube in place using Foam Tac.

BuffaloASsensor1
BuffaloASsensor1.jpg1632x1224 243 KB

BuffaloASsensor2
BuffaloASsensor2.jpg2093x1379 473 KB

BuffaloASsensor3
BuffaloASsensor3.jpg1787x1493 168 KB

BuffaloASsensor4
BuffaloASsensor4.jpg1775x1268 420 KB

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TFMini driver issue FMUv5

October 29, 2018, 1:47 am
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@N_A1 wrote:

For some reason, Benewake TFMini sensor reports strange values as displayed by sonarrange variable in Mission planner (this has been tested both on FMUv2 and FMUv5). When the sensor switches to long range mode, sonarrange value jumps to about 650 meters. Is there an easy fix for this?

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VTAIL_OUTPUT not an option

October 29, 2018, 3:19 pm
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@kerrycorcoran wrote:

Mission Planner 1.3.59
Arduplane 3.10.0-dev
Matek F405 Wing Flight Controller

Attempting to setup a Mini Talon w/ V-Tail and when searching for VTAIL_OUTPUT it is not listed under Full Parameter List or Tree.

Any ideas what I might be doing incorrectly?

I am following this video as a guide (https://www.youtube.com/watch?v=O3sU7eVZwik&index=8&list=PLDpsqvUKcRkvMl5tT6R56iMsxPRkHOFXO) 3:35 in the video it references VTAIL_OUTPUT.

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Crash: story, query, and proposed fix

October 30, 2018, 8:01 am
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@jace26 wrote:

I was doing some adjustments to our Q_M_Spin_Min parameters, trying to make our detransitions (transition back to VTOL) and takeoffs smoother when I committed a typo and set the param to 0.8 (80%) instead of the intended 0.08 (8%). The rest of the story practically tells itself, but for those who aren’t familiar the aircraft initiated an auto takeoff, using 80% as the minimum throttle (read:like a rocket) and had insufficient control margin to stabilize its attitude, resulting in a full 1.5x left roll before impacting the ground left wing down.

As soon as it took off it was apparent something was wrong, but my mind didn’t fully make the connection. When it started to drift and roll I switched to Qloiter from auto, but this did nothing to fix the problem. I never switched into Qstabilize, but a post-wreck SITL of the situation reveals that it also wouldn’t have helped with the problem. Any ideas on how I could have mitigated the problem once it was already in flight? The SITL run also confirmed that there was no warning when setting this parameter so high, or so far from the prior setting (0.06 in my case).

While I take full responsibility for making the error, it would seem that an exceedable limit of like 0.3 (the high end noted in the parameters documentation) or a scaling check (warning: you adjusted this parameter by more than a factor of 2, do you wish to continue?) could help prevent such errors.

Also, consistent and intuitive parameter scales would help prevent errors as well. For example, some parameters have a range of 0-100 for percentage, while others are 0.00-1.00 for the same scale. I would argue that using the 0-100 (exceedable for some parameters) scale is more intuitive and would likely result in less such errors.

Your feedback and condolences are welcome!

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Arduplane autotune lost control of elevetor and rudder

October 31, 2018, 1:45 am
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@allen2 wrote:

autotune with my aileron work fine i did flew it for 5 mins ans save parameters. next turn is tuning with my elevetor after couples of turns suddenly i lost control of elevetor and rudder switch it manual and land the plane safetly no crash. anyone help me please. i restarted the plane and push the botton works fine again…

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I got log file but cant upload here

October 31, 2018, 7:18 am
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@allen2 wrote:

can anyone help me to analyze it please? in auto tune mode aileron works fine i did flight for 3 to 5 mins and decided to tune v tail elevator after a couple f turns my servo freeze and not responding, i switch it to fbwa and manual mode its the same. fortunately i land the plane no crash…

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QuadPlane Turning Inquiry

October 31, 2018, 7:46 pm
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@manavgandhi17 wrote:

Good Evening All,

I represent a design team at Virginia Tech that is currently working towards fabricating a custom QuadPlane for a competition we participate in. Our competition relies heavily on waypoint accuracy and obstacle avoidance, thus we have a question regarding craft yaw control during transitions.

The way our missions and flights are set up, we require the craft to yaw using the multirotor before flying to the next waypoint. After playing around with a simulator for countless hours, I was unable to find a param that allows for this ability. Ideally, we would like that after loitering at a waypoint, the craft yaws to face the next waypoint (similar to in ArduCopter) before transitioning to a fixed-wing. This would allow for the craft to have a very small “turning radius” and allow for us to fly tight maneuvers.

If anyone can point me in the direction of getting this working, any help would be appreciated. Also, if this is currently not capable with the current firmware - I highly request that a parameter to be added as it would aid us heavily in our current and all future crafts.

Thanks in advance for the help!
Manav Gandhi

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Right side tilt servo jitter - Skywalker X8 VTOL

November 1, 2018, 1:56 am
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@Kyomo_Jung wrote:

Hi

I have problem with right side tilt servo jitter-like issue whenever roll key in.
I thought it’s caused by interference from other devices but it doesn’t look like it.

My configuration
SERVO1_FUNCTION = 77 (Elevon Left )
SERVO2_FUNCTION = 75 ( tilt_Left )
SERVO3_FUNCTION = 34 ( Motor 2 )
SERVO4_FUNCTION = 78 ( Elevon Right )
SERVO5_FUNCTION = 76 ( tilt_Right )
SERVO6_FUNCTION = 33 ( Motor 1 )
SERVO9_FUNCTION = 10 ( Cam_Trigger )
SERVO10_FUNCTION = 1 ( RC Passthrough. Cam swaffing )
SERVO12_FUNCTION = 36 ( Motor 4 )
SERVO13_FUNCTION = Power

tilt_jitter
tilt_jitter.png1851x567 17.3 KB

As seen above Arduplane never send pwm to servo5( tilt_right ) but it jitters

I’ve also test it by “Servo Tester” but it has NO Problem

pls refer to
videos here - https://photos.app.goo.gl/ADZ3nRJ9y2Na5wZ86
( 2nd video done by Servo Tester )
log here - https://drive.google.com/file/d/1s3nD3yVCyEGLFdDb_W_r1lWOQMfO-QIP/view?usp=sharing

Very appreciated if you would let me know any clues

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Autonomous Gliding

November 2, 2018, 11:22 pm
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@glassfish wrote:

Hi,

I am a university student working on a mission where I’m planning to release a completely underpowered glider from a carrier airplane at around 50-100 ft. The glider is to autonomously land at a landing site immediately after release. I was hoping to use ArduPlane to land the glider but I was very confused if or how I can configure it for this type of aircraft and mission. Most of the glider related application I’ve seen involve soaring which I definitely do not want to do. I’m also not sure how to configure everything without a motor of any kind as it seems like many of configuration guides assume there is motor(even for gliders). I was wondering how this can be done or if it is even possible. Can anyone help?

Thanks

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Pixhawk system error after take off flight modes keep on switching to Auto,RTL,FBWA and manual

November 4, 2018, 1:54 am
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