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Andrew Tridgell
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  • Canberra, ACT
  • Australia
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Andrew Tridgell's Discussions

APM:Plane 2.76 released

Started this discussion. Last reply by Glen Wimberley Feb 5. 30 Replies

I've just released APM:Plane 2.76 with an important bug fix.Please see the release announcement for details.Continue

APM:Plane 2.75 released

Started this discussion. Last reply by Andrew Tridgell Nov 12, 2013. 29 Replies

APM:Please 2.75 has now been released.Have a look at the release notes in the forum for lots of details on the…Continue

APM:Plane 2.74 released

Started this discussion. Last reply by Quentin Mayberry Jun 10. 817 Replies

The APM dev team is delighted to announce the release of APM:Plane 2.74, a major new release with a lot of new…Continue

ArduPlane 2.74beta3 released

Started this discussion. Last reply by Andrew Tridgell Jul 15, 2013. 18 Replies

I've just released ArduPlane 2.74beta3. I'm hoping this will be the last beta before the 2.74 release. Please test it as much as you can!The simplest way to try it is to use a pre-built firmware from…Continue

 

Andrew Tridgell's Page

Latest Activity

Stephen Gloor commented on Andrew Tridgell's blog post Demonstration of CanberraUAV image search algorithm
"Hi Michael - I had some of the same problems with the ARM version of libturbojpeg - this is the reply I got from Tridge - hope it helps: "you do need an updated mavproxy, but that isn't the problem shown inyour build. The problem is the…"
11 hours ago
Michael Thomas commented on Andrew Tridgell's blog post Demonstration of CanberraUAV image search algorithm
"OK... now I have installed libjpeg_turbo-1.3.1 which I got from the sourceforge page. I am no able to compile cuav v1.3.2 successfully, and I see the cuav-1.3.2-py2.7-linux-armv6l.egg in the /usr/local/lib/python2.7/dist-packages folder. I can…"
Sunday
Michael Thomas commented on Andrew Tridgell's blog post Demonstration of CanberraUAV image search algorithm
"Further to the above comment - I read another of Stephen Gloor's comments, and have installed the ldc1394 module with the following command (sude get-apt install libdc1394-22-dev). Now the setup of the CUAV module gets stuck on the compilation…"
Sunday
Michael Thomas commented on Andrew Tridgell's blog post Demonstration of CanberraUAV image search algorithm
"Hi Tridge, I have the CUAV modules working on my Windows PC, and they work great. I am trying to integrate this system into our Raspberry Pi but I'm having some problems. I followed the steps that you outlined above, and it all works fine…"
Sunday
Jose.L.Jr commented on Andrew Tridgell's blog post Advances in airspeed handling
"I agree with Dyer. If you concern is the dust the digital sensor will no resolve the issue."
Jul 12

Moderator
Graham Dyer commented on Andrew Tridgell's blog post Advances in airspeed handling
"The pitot tube is a closed system, it does not pass air through it, it just registers the air pressure thus should have no problem in dusty environments. It will only clog if pressed into dirt (or crashed) or obstructed in some way."
Jul 12
Elios commented on Andrew Tridgell's blog post Advances in airspeed handling
"HI,I am working on a fixed wings plane and I want to fly it in a dust and mud area and a friend has told me to nose use the pitot because it may cause problem if dust go inside, but I am not feeling Ok to go without the sensor because…"
Jul 12

Developer
Andrew Tridgell replied to Stefan Oosterhout's discussion Pixhawk analog servo support?
"The APM:Plane firmware runs all servos at 50Hz. It should work with all servos. Cheers, Tridge"
Jul 10
Tobias Simon commented on Andrew Tridgell's blog post Python MAVLink interface (version 0.2)
"Hi Andrew, I'll have a look into cython. It should be relatively straightforward to wrap any of these backends to be compatible with the traditional pymavlink API."
Jul 9

Developer
Andrew Tridgell commented on Andrew Tridgell's blog post Python MAVLink interface (version 0.2)
"@Tobias, another possibility is to generate some cython code."
Jul 9

Developer
Andrew Tridgell commented on Andrew Tridgell's blog post Python MAVLink interface (version 0.2)
"@Tobias, nice work! Do you think we could use the SWIG backend with a wrapper to give the pymavlink API? There is a lot of code using the pymavlink API already, and it would be really nice to get the speedup without rewriting the apps. Cheers, Tridge"
Jul 9
Tobias Simon commented on Andrew Tridgell's blog post Python MAVLink interface (version 0.2)
"If anyone wants to generate MAVLink messages on an embedded Linux controller like the Raspberry Pi, this is an alternative implementation using the bare C headers and SWIG for Python: https://github.com/PenguPilot/swig-mavlink The speedup…"
Jul 9

Admin
Thomas J Coyle III replied to Andrew Tridgell's discussion How should we handle reverse in ArduRover? in the group ArduRover User Group
"@RoboBill, Unfortunately our programmer, Andrew Tridgell, has been involved in other activities and will not be available until some time in the future. Therefore ArduRover2 firmware updates will be at a standstill until he becomes available to…"
Jul 9
RoboBill replied to Andrew Tridgell's discussion How should we handle reverse in ArduRover? in the group ArduRover User Group
"What is the current status of the reverse? What can I do to help with those new "few things"? Many thanks for all your efforts RoboBill"
Jul 9
MHefny replied to Andrew Tridgell's discussion Welcome to the 3DR Radio forum!
"I want to compile the  firmware of this module. I used http://www.silabs.com/support/pages/software-downloads.aspx Silabs compiler. But nothing straight forward. ... is there a guidance for compiling this firmware. Best Regards, M. Hefny"
Jul 8

Developer
Andrew Tridgell commented on Emlid's blog post Last day on Indiegogo for Navio - autopilot shield for Raspberry Pi.
"btw, I'd really encourage the Navio team to get a bit more involved on drones-discuss, and in our weekly dev calls and coding sessions. I'm delighted that you are doing a board like this, but it's important to have good communication…"
Jul 7

Profile Information

About Me:
http://samba.org/tridge
Please tell us a bit about your UAV interest
Lead developer for APM:Plane and APM:Rover
Hometown:
Canberra, Australia

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Andrew Tridgell's Blog

APM:Plane 3.0.3 released

Posted on May 18, 2014 at 5:12pm 25 Comments

The ardupilot development team is proud to announce the release of version 3.0.3 of APM:Plane. This release contains some important bug fixes for all supported boards.



The key bug fixes in this release are:

  • fixed handling of filter divergence in the EKF…
Continue

APM:Plane 3.0.2 released

Posted on May 3, 2014 at 11:51pm 34 Comments

The ardupilot development team is proud to announce the release of version 3.0.2 of APM:Plane. This release combines some important bug fixes with some new features.



I2C bug fix



The most important change for…
Continue

An open letter to Paul from witespy

Posted on April 30, 2014 at 7:00am 120 Comments

Hi Paul,

I don't know if you know me. I'm a lead developer for the ardupilot project. You know, the project that you just accused of not being open source in an interview on http://thecrashcast.com/. I write about half the code for the project, so maybe you've heard of me.

If you've been following my work for the last 4 years on ardupilot then you would know that I'm generally a pretty mild mannered person. I try to keep my posts…

Continue

APM:Plane 3.0.0 released

Posted on April 7, 2014 at 5:42pm 51 Comments

The ardupilot development team is proud to announce the release of version 3.0.0 of APM:Plane. This is a major release with a lot of new features.

For each release I try to highlight the two or 3 key new features that…

Continue

Comment Wall (10 comments)

At 7:20pm on November 27, 2012,
300km
moglos
said…

Hi Andrew

It looks like my navigation gremlin isn't completely solved. I've posted an update with images and logs at http://diydrones.com/forum/topics/fly-away-saved-at-1-8km-help-with-logs-please

I wonder if you're able to see anything else obviously wrong?

Thanks

Moglos

At 8:12pm on December 19, 2012, Jamie Glover said…

Tridge, can I bother you to look over 5 log files to see if you can spot the crash and possibly what happened? I was flying my Skywalker with the exact same setup as always and have had many successful flights until yesterday. Two back to back and a totaled plane now. In FBWA it would go into a steady downward pitch. It was unresponsive to any of my input. I tried manual and RTL with no response. I had I think 5 logs on the APM after the flight and Ive looked through them, but Im not sure what Im looking at. The plane on the last crash stayed dangling in a tree for about 4 hours while I tried to get it down. Anyways, I would greatly appreciate your input. Email me if you wouldnt mind taking a look at the logs.

Thank you sir.

Jamie

At 12:51pm on March 16, 2013, Gary McCray said…

Hi Andrew, Ive just finished putting in a section on how to flash your PX4FMU board with the latest developer ArduCopter PX4 code from your firmware object repository.

It's pretty ugly and includes quite a bit of stuff for setting up  development environment as well.

And sadly at the end after flashing the new code to the PX4FMU it still won't establish a MavLink connection with Mission Planner although I am pretty sure the board is properly flashed.

I am giving you the link to my Wiki debacle here: https://code.google.com/p/arducopter/wiki/PX4_First

I would greatly appreciate any feedback you could give.

I actually produced this primarily to get feedback from you as I did not want to waste any more of your time than necessary with incomplete back and forths.

If you can point me in the right direction(s) I would greatly appreciate it and will be happy to modify the Wiki page appropriately.

I figure that if we can get this simplest FMU only one to be "acceptable" the rest should fall into place fairly easily.

Thank You very much for your assistance with this.

Gary McCray grmccray@yahoo.com (Please feel free to Email direct if you wish).

At 9:42am on April 22, 2013, Sid said…

Hi Andrew - 

I am new to ArduPlane development and having trouble getting it to build with Arduino.  

I would greatly appreciate any direction you can provide on what I am doing wrong.

This is what I have done:

I have downloaded Arduino 1.0.4, 1.0.3 and 1.5.2... I get the exact same set of errors whenever I tried to do a Verify / Compile of ArduPlane with any version of Arduino.  

There has to be something very basic here that I am missing.

I went here to get the latest Arduino development environment http://arduino.cc/en/Main/Software
There I downloaded Arduino 1.5.2
I extracted that to c:\Programming\Arduino
Then I was able to open Arduino and build their example programs without any errors.
I followed these instructions for getting set up for doing development:  http://arduino.cc/en/Guide/Windows
No problems with building the Blink test example.
I set up the Arduino Sketchfolder here:  C:\Users\Sid\Documents\Arduino
I set this in Arduino's preferences
I then went to this page and followed the instructions for setting up ArduPlane development https://code.google.com/p/ardupilot-mega/wiki/Code
I went here and downloaded the latest ArduPlane software - ArduPlane 2.7.1  https://code.google.com/p/ardupilot-mega/downloads/detail?name=ArduPlane-2.71.zip&can=2&q=
I unzipped it to my desktop.
I then copied them to the Arduino Sketchbook folder as shown on Chris' web page (only using Sid instead of Chris).
Inline image 2
I then opened Arduino 1.5.2 and did a Verify / Compile and got the following error messages:
ArduPlane:239: error: new declaration 'uint8_t digitalRead(uint8_t)'
C:\Programming\arduino-1.5.2\hardware\arduino\avr\cores\arduino/Arduino.h:102: error: ambiguates old declaration 'int digitalRead(uint8_t)'
ArduPlane:1288: error: expected constructor, destructor, or type conversion before 'int'
ArduPlane.pde: In function 'int SKETCH_MAIN(int, char* const*)':
ArduPlane:1288: error: 'OK' was not declared in this scope
compat.pde: In function 'uint8_t digitalRead(uint8_t)':
compat:33: error: new declaration 'uint8_t digitalRead(uint8_t)'
C:\Programming\arduino-1.5.2\hardware\arduino\avr\cores\arduino/Arduino.h:102: error: ambiguates old declaration 'int digitalRead(uint8_t)'
I am at a loss as to what I am doing wrong here and I hate asking for help.  Any direction would be really appreciated.  I will be ecstatic when I am able to get ArduPlane to build and can start doing real development with it.
Thanks again.
Sid

At 5:39pm on April 22, 2013,
Developer
Andrew Tridgell
said…

Hi Sid,

Have a look at http://firmware.diydrones.com/ under Tools, in the Arduino directory. That is the Arduino version you need.

Also see http://dev.ardupilot.com/ for more developer information.

Cheers, Tridge

At 8:07pm on May 24, 2013, Vishnu Rao said…
Hey Andrew! I'm flying an X8 with APM 2.5. I have quite struggled trying to tune the bird to the right PID settings. Lately I have been using the X5 Param file posted in the Common config website.
I noticed the X8 in your display picture, can you help me by sending me the parameter file you've been using?
My AUW is 4kgs. Any changes or suggestions to keep it safe and stable? I've taken care of the wings. Also when I was using the Arduplane 2.72, my plane would snake around while navigating. Is there anything I would've missed out?
Please help.
Thanks!
At 5:52pm on July 22, 2013, Philip said…
Hi Tridge
I sent you an email on your Samba email address with my contact details, will be up in Canberra tomorrow. Would be great to catch up if you are around.
Phil
At 10:28pm on September 15, 2013, MD said…

Hi Tridge,

Would it be feasible to code something to use the laser altimeter currently discussed on top content blog (link below). It's the first low cost and accurate one I've seen and could be used for both arducopter and arduplane, would be really good for autoland for both and avoidance, not to mention the what to do with it if put on a servo. Possible? If so, who would be best to ask to do this? Thanks.

Ryan

http://diydrones.ning.com/forum/topics/lightweight-low-cost-laser-altimeter

At 11:28pm on November 21, 2013, Paul Classon said…

Dear Andrew, I recently got back into RC modelling after 50 years (64 now) there have been some significant advances in both radio and airframes since the old OS Pixie days and rubber escapements.  I bought a Bixler 1 now a 2 which I wanted to fit one of the Hobbyking Crius AIO FC's to. The Multiwii and megapirate AIO FC with a Atmega 2560 MCU.  Which firmware would you advise to upload, preferably something which will make the setup as much plug and play as possible. Are you aware of any periodic gatherings down here in Melbourne for like minded RC flyers?  I thank you in advance BR Paul.

At 12:11pm on December 21, 2013, Jamie Glover said…

Hey Tridge,

I went out earlier this week and flew a mission with the University's plane to test out the GeoSearch program. After completing the mission, I put it into FBWA to bring it down for a landing. about 75 ft off the ground, it went into an straight down nose dive. This is the second time its happened, but this one was unrecoverable. Needless to say the crash totaled the plane. I was wondering if you could look through the logs to see if it is possibly the same issue as the bug that was fixed in 2.76.  I was running 2.76 firmware. I looked through the logs and you can see where the APM received the command to pull out of the dive, but the servos never responded to the command.  Anyways, I was thinking it is either the bug or an interference problem from a cell phone tower about a mile away. My professor wants to make sure either way before we put more money into the project. Ive attached the log files and would greatly appreciate any feedback.

2013-12-16%2016-14-38.param

2013-12-16%2016-14-38.tlog

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