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Quad Firmware with Octocopter setup

June 8, 2016, 12:29 am
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@camow7 wrote:

Hey,

I was wondering if anyone has experimented running quad copter firmware on an octocopter style frame? What I mean is instead of a traditional octo where every second motor spins CCW and every other CW, I want to have motors A and B spinning in the same direction, C and D spinning the opposite, E and F the same as A and B, G and H as C and D?

Basically I want a coaxial quad setup with the efficiency of an octocopter and only require 4 motor output signals.I will split the output signal for motor 1 to the ESCs of motors A and B, the motor signalfor motor 2 to the motors E and F and so on..

Is there any reason this won't work?

Regards,

Cameron

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APM hardware improvements, but no software improvements

June 8, 2016, 6:03 am
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@bisenberger wrote:

The APM is up to version 2.8 and many of the hardware issues have been resolved. It is a shame that firmware support for the APM has ended. ArduCaopter V3.2.1 is very good, but there are still some issues with mission commands that could be addressed.

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Crash on autotune copter 3.3.2, 12 kg quad with U8 on 28" props

June 8, 2016, 7:21 am
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@Blade wrote:

Hello!

I have a quad with U8 motors and 28" props, ESC's are T60 as recommended by the motor manufacturer, PX4 and Copter 3.3.2 are in use. TOW is 12 kg.

I have read about the difficulties people are having with autotune and this size quads & high pole count motors. I have carefully tried to tune the PID:s myself. As a result the ship flies quite well in stabilize and loiter modes but I still figured autotune would be wise to do.

Well... the start of the autotune went well, but on the 3rd or 4th twitch the copter started to overshoot and came down hard.

Attached is the logfile of the flight. I would very much appreciate if someone still would care to take a look and and point me to right direction....

Thank You for any input!

The log is here: https://drive.google.com/file/d/0B-cKuRcCPsDEXzluNXc3QzFCYXc/view?usp=sharing

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APM and Autotune configuration

June 8, 2016, 10:01 am
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@Collin01 wrote:

I use APM with r3.2.1

In the onlinemanual, I found the parameter GCS_PID_MASK: GCS PID tuning mask.

But I don't found it in the parameterlist in mission-planner.

How can I configure the AUTOTUNE?

Additional question: If a configure AUTOTUNE as special mode on CH7, it start and work.
If I configura AUTOTUNE as flight-mode, it dosn't work.

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How fast can I charge 4S 10000mAh 10C Battery and what is the recommended charger

June 8, 2016, 10:26 am
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@Vusal_Jalilov wrote:

Hello everybody!

It takes forever to charge 4S 10000 mAh 10C Lipo Battery at 3A (the charger supplied by 3DR).
I believe it can be safely charged at 5C which is 50A. However, I am OK to go with 30A.

Recommendations on the Charger + Power Supply would be highly appreciated,

Regards.

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Automatically trigger lights when flaps deploy

June 8, 2016, 11:04 am
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@Autonomost wrote:

I would like to have a landing light that is on relay 2 trigger when the flaps deploy...is there any way to do this?

Thanks

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Autotune failed / Pixracer / overpowered

June 8, 2016, 1:50 pm
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@Thorsten wrote:

Hi Leonard and all,

I am building a new quad based on the PixRacer. The copter is a little overpowered, vibrations are very low, and it flies stable and quite ok after some manual tuning. Now I tried Autotune and for the first time I am having problems with it. After Autotune the copter was more than sluggish and crashed because it was not controllable (nothing broke so all fine).
What is strange is that the manual tuning values acutally look too high to me for a 400mm copter with 900kv motors and 1.2kg (without payload). Yet, it flies ok. In contrast the Autotuning PIDs are very low. When tuning it manually I had to increase the ATC_ACCEL_P/R_MAX values to >=100000. Then it was responsive and not sluggish. Autotune returned ATC_ACCEL_P/R_MAX values around 13000.

Question: do you have any ideas or recommendations I should try? The copter drifted a bit and there might be a small COG imbalance. However, both pitch and roll failed pretty much the same way. So it seems tuning was somehow successful. But since it is unflyable I am wondering what went wrong.
I'll try an autotune again with payload the next days (after it stopped raining...).
You find the log file at: http://thorstenbehrens.de/AT.zip

Thanks and best regards,
Thorsten

Pasted image704x1001 15.7 KB

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What shoud I study for arducopter source code?

June 9, 2016, 12:20 am
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@sgh055 wrote:

hello every one.

I'm newbie so I want to know what I study for source code

please tell me.

My final destination is make Nuttx driver.

thank you.

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APM Planner 2.0.23-rc1 Available for Testing

June 9, 2016, 12:30 am
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Piksi RTK seems to work, but is pixhawk using it?

June 9, 2016, 2:41 am
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3.4 Autotune PIDS same as 3.3?

June 9, 2016, 5:46 am
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@govsux1 wrote:

If your flying 3.3 and have you copter flying very good.... after you instal 3.4 and do an auto tune shouldn't it come up with PID values that are very close to what you know worked well? Wouldn't that be a good way to see if 3.4 is capable of doing a good PID calibration by doing that comparison? OR do the changes in 3.4 mean it might take different PIDS to fly the same as it did before?

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EKF variance error in altitude hold mode without gps

June 9, 2016, 6:24 am
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@pchatrath wrote:

I am using Solo (pixhawk + copter3.3 i believe) for indoor application. I followed Indoor Flying Guidelines and changed the parameters uisng APM Planner. However when i pass command to takeoff in altitude hold mode I get EKF variance msg and then the uav disarms the motor and does not takeoff. Any idea how I can disable this behavior?
I did the following parameter changes:
ARMING CHECK [-9] ignore GPS check
AHRS_GPS_USE [0] use dead reckoning
EKF_GPS_TYPE [3]
FS_BATT_ENABLE [1]
FS_THR_ENABLE [3]
FENCE_ENABLE [0] - disable
FS_EKF_ACTION [2]
FS_EKF_THRESH [1]

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External USB&Led adapters not working with pixhawk boards

June 9, 2016, 12:42 pm
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@Onur_BOY wrote:

I have been using pixhawk for six months and I am very satisified with it. External usb&led adapter is a good option to download the dflogs from the plane because its not possible to reach the side usb port of pixhawk in the fuselage.
Last week I bought 3 new pixhawk boards from a reliable chinese vendor and 5 led&usb adapters but I could not make a connection between the boards using external adapters. When I connect it powers the board, pixhawk starts but no light on the external led and pc does not recognize the pixhawk itself via usb.
When I use the default usb port (side) pc recognizes the pixhawk.
First, I thought that one of the boards or adapters was broken but what is the possibility of 3 broken boards or 5 broken usb&led adapters at the same time?
Do you have any idea about what has been changed because I was able to use the led&usb adapter on my previous plane with another pixhawk from the same vendor?
Thank you.
Onur.

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Status of Ailerons, flaps, spoilers, crow, etc.?

June 9, 2016, 1:12 pm
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@wkf94025 wrote:

I've researched the numerous posts by marcmerlin, jacklalane, flyingdoktor, and others regarding getting ailerons, flaps, flaperons, crow, etc., working on ArduPlane. Specifically:
* https://github.com/ArduPilot/ardupilot/issues/2186
* https://github.com/ArduPilot/ardupilot/issues/2524
* http://www.rcgroups.com/forums/showthread.php?t=2576614&page=29&highlight=rc5_function#post34240035
* http://www.rcgroups.com/forums/showthread.php?t=2576614&page=26&highlight=rc5_function#post34152649
* http://marc.merlins.org/perso/rc/post_2015-08-04_Using-Flaperons-With-Ardupilot.html

Are there any bug fixes or enhancements planned for this general area of functionality? I have am running ArduPlane 3.5.1 on a Radian Pro (R, E, Ailerons, Flaps) and trying to understand best way to do all this. Looking to get basic functionality I had on my radio mixing, which is aileron differential, manual flaps, and (cool but not that critical) full crow on left stick down, that put flaps down and ailerons up. I currently have 2nd aileron (right aileron) connected to ch7, and ch7_function set to 18, but the aileron is pegged high in Manual mode, and for the life of me I can't seem to get it to default to neutral condition, and generally move in opposite direction of left aileron. Curious (to me) in FBWx, Cruz, modes, the ailerons both behave normally. Welcome any updates here, and/or pointers to other resources. I have read all the wiki pages on flaps, ailerons, etc.

Kelly

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Where can I find MavLink messages code #166

June 9, 2016, 1:42 pm
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@Pedro_Albuquerque wrote:

I have just started to build a concept test program to build a companion computer to may quadcopter.

My arducopter version is 3.3 and a build a small program on a Arduino Nano to communicate with my pixhawk through serial4.

I can read the Heartbeat msg
I can send a parameter request messages and get the answer and decode it, but I also get a msgID = 166.

I can't find it's meaning in this doc https://pixhawk.ethz.ch/mavlink/#HEARTBEAT.

Is there another message list or I am miss interpreting the info I get ?

Screen Shot 2016-06-09 at 21.38.02.png1590x1520 455 KB

the code that prints the msg code is

Screen Shot 2016-06-09 at 21.42.02.png1434x804 124 KB

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Using Mission Planner with Raspberry Pi as a main controller for Drone

June 9, 2016, 3:52 pm
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@Taha wrote:

Hi
I am working on Raspberry Pi 2 Model B as a main controller, 10DOF (L3G4200D_ADXL345_HMC5883L_BMP085 )IMU , and neo cn-06 GPS module.
I'm wondering if I can use an open-source GCS like Mission Planner with my flying system or it is just done for pre- full defined system like Ardupilot.
Thanks

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2.0.20 known issues?

June 9, 2016, 5:22 pm
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@1WA2HVN wrote:

I'm just a standard user and I installed APM Planner 2.0.20 today. I understand it's still relatively new so I wanted to share a couple of things I've found that do not function correctly. I've read in this forum one or two were supposed to or are currently being addressed.

Initial Setup tab
1. Compass live calibration does not appear to function. A continuous error message appears "Not enough data points to calibrate the compass"
2. Declination Website link does not work
3. Calibrate accelerometer does not function. There is a 40 sec timer countdown but nothing else. At the end of the count a FAILURE: Failed CMD: 241 prompt appears

Config/Tuning tab
1. Standard Parameters and Advanced Parameters screens are blank. There is no way to change anything so it basically makes the entire program useless

I thank you guys so very much for making this available to Mac users!!! I had been using Arducopter but I smashed my PC tablet yesterday and don't want to buy a new one so I tried converting my Pixhawk to use Qgroundcontrol. That was a frustrating mess and then I discovered you guys had published an APM for Mac so I immediately downloaded it.

My bird is basically dead in the water until the next update so please, please Help a Brotha Out (HBO)
as quickly as possible.

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Pixhawk Mission Planning

June 9, 2016, 7:50 pm
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@kyoung wrote:

I have a pixhawk setup in an airplane and would like to set waypoints and fly missions. I have mission planner installed on a laptop, but at the field I do not have an internet connection, thus I can't get a satellite view the flying field. I have an iPhone 6 and can download Mav Pilot which I believe would allow me to plan missions, but what do I need to add to the pixhawk in order to establish either a wifi or bluetooth connection to the iPhone. I could be wrong, but I don't believe the pixhawk has built-in wifi or bluetooth. Mission planning is new to me and I could use some help in getting things setup.

Thanks,

Keith

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Hexacopter Blues- failure to fly!

June 9, 2016, 10:51 pm
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@pmusto wrote:

Following my post "Throttle run away on minimal throttle input". I still cannot resolve the issue. Having tried 3 different versions of the Copter firmware and no luck.

Does anyone in the community have a hex flying successfully on Copter 3.3 with similar specs to mine?
"I have self-built a hexacopter with the following specs:
Emax MT2216- 810KV motors
Spider 20A ESCs re-flashed with BLHeli Blu20A firmware
Pixhawk clone flight controller
Turnigy i10 Transmitter and receiver running PPM, plane mode"
If so please upload a successful flight log so I can analyse the parameters used.
There was a suggestion that the hex firmware may have a bug.....

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From tlog > csv, now to mysql

June 10, 2016, 12:24 am
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@viti.io wrote:

About a week ago, I shared a Java CLI for converting .tlog to .csv. Well, to go along with that, I've created a python script to take that csv, create a mysql database table, and populate it. You'll need your own database and to edit line 1116 in the .py to match your setup. You can check out both at http://www.markbrown.space/tlogtocsv.html

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