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

Andrew Tridgell's Discussions

APM:Plane 2.76 released

Started this discussion. Last reply by SlipstreamFPV Feb 5, 2014. 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 Gavin Greenwood Feb 23, 2015. 818 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


Developer
Andrew Tridgell replied to Tom Moore's discussion Could you please help analyse this Pixhawk crash with log? in the group PIXHAWK
"Hi Tom, The problem is that your pitch gains have never been tuned. When you are flying in manual I can see you putting in quite large stick inputs in order to make the aircraft climb. For example, elevator input went to 1200. The autopilot needs to…"
14 hours ago

Moderator
keeyen pang commented on Andrew Tridgell's blog post APM:Plane double release 3.5.3 and 3.6.0beta1
"Dear Andrew Can I know if any update info available or should I continue to ground my plane until further notice ? Thanks"
20 hours ago
iskess commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"PX4 has had tilt rotor for s while. Ardupilot just added it recently."
Thursday
Spike Webb commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"Thanks, i'll check out the link.     Which one would support tilt rotors?  "
Thursday
iskess commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"There are two VTOL options for the Pixhawk. Quadplane for the Ardupilot project, or the PX4 variant. I'm using Tridge's Quadplane that was the subject of this thread. You can find details here:…"
Thursday
Spike Webb commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"I only know vaguely of the pixhawk option, and of the open-aero firmware for the KK2 board.    I'd appreciate a link to more info on the code you are referring to, as i'll need something soon.  I'm designing the…"
Thursday
iskess commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"I'm using Tridge's code on a Pixhawk as discussed here. What other options are there worth consideration?"
Thursday
Spike Webb commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"That depends on the airfoil somewhat, as different airfoils will fly most efficiently at slightly different angles of attack. 3 degrees sounds like a good starting point, and with such a small model, it'll surely work fine.  I'm…"
Thursday

Developer
Andrew Tridgell commented on earthpatrol's blog post Flying Robot Commander and GSA #1
"very nice!"
Thursday
iskess commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"Spike, I really appreciate your Gemini design and have a lot of respect for your engineering skills. May I ask what angle on the vertical lift motors are you planning to start with? I'm thinking 3 degrees. I'm building my Skywalker…"
Thursday
Spike Webb commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"another factor to some angle of the motors is to achieve hover with the wing at a slight positive angle. that way, as was mentioned before,the rotors are relatively neutral to the airflow in forward flight, the lift motors will also aid speed during…"
Wednesday

Developer
Andrew Tridgell replied to Randy's discussion PixRacer with Ardupilot
"I've just pushed a bugfix to master that fixes ESC calibration on the PixRacer. Previously the "boot with throttle high and then reboot" method did not work as the FMU outputs did not get properly armed. Peter Barker noticed the…"
Wednesday

Developer
Andrew Tridgell replied to Randy's discussion PixRacer with Ardupilot
"@Tim, I am not aware of any issues with flying master on a Pixracer with a plane. It should fly just the same as a Pixhawk with the same firmware version. Cheers, Tridge "
Tuesday

Developer
Andrew Tridgell replied to Randy's discussion PixRacer with Ardupilot
"@Artem, I have reproduced this and I've pushed a fix to master. Thanks for letting us know! I haven't looked at the other issues yet "
Tuesday
Ultrafuge commented on Andrew Tridgell's blog post Building, flying and not crashing a large OctaQuadPlane
"Hi Tridge, I tried SBUS using Futaba R7008SB. In Arducopter heli 3.3.3 stable I had to set BRD_SBUS_OUT = 1 and BRD_SAFETYENABLE = 0 to get signals on the SBUS out of the Pixhawk. In Arduplane 3.5.3 stable I had to use BRD_SBUS_OUT = 4, using other…"
Monday

Developer
Andrew Tridgell replied to Adrian Dudok's discussion Tri-Tilt Rotor Technology
"Interesting, I have recently added support for tri-copter tiltrotors and tilt-wings in the QuadPlane code for ArduPilot. See this code which does simple tiltrotor…"
Monday

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
Note: the best way to get in touch with me quickly is via the ArduPilot gitter chat here: https://gitter.im/diydrones/ardupilot
Hometown:
Canberra, Australia

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Andrew Tridgell's Blog

APM:Plane double release 3.5.3 and 3.6.0beta1

Posted on April 30, 2016 at 1:16am 29 Comments

As mentioned on the 3.5.2 release discussion we have decided to do a 3.5.3 release to fix a couple of important bugs found by users in 3.5.2.

The main motivation for the release is a problem with flying without a compass enabled. If you fly 3.5.2 with MAG_ENABLE=0 or no compass attached then there is a risk…

Continue

APM:Plane 3.5.2 released

Posted on March 25, 2016 at 9:05pm 73 Comments

The ArduPilot development team is proud to announce the release of version 3.5.2 of APM:Plane. This is a minor release with small changes.



The main reason for this release over the recent 3.5.1 release is a fix for a bug where the px4io co-processor on a Pixhawk can run out of memory while booting. This…

Continue

New ArduPilot documentation site

Posted on March 24, 2016 at 1:01am 26 Comments

If you have visited ardupilot.com recently you may have noticed you are redirected to our new documentation system on ardupilot.org. This is part of our on-going transformation of the ardupilot project that we announced in a previous…

Continue

APM:Plane 3.5.1 released

Posted on March 20, 2016 at 3:50pm 53 Comments

The ArduPilot development team is proud to announce the release of version 3.5.1 of APM:Plane. This is a minor release with primarily small changes.



The changes in this release are:

  • update uavcan to new protocol
  • always exit loiter in AUTO towards next waypoint
  • support…
Continue

Comment Wall (16 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,
Developer
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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