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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 Glen Wimberley 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. 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
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"I'm a bigger fan of the Eurocopter X3 design.  I'm currently involved in a coaxial project, and honestly the mechanics are a nightmare.  At this scale, it's hard to shrink down the linkage, so the head become very tall, and…"
8 hours ago
JB commented on Andrew Tridgell's blog post An awesome day at CMAC
"Thx Rob I feel somewhat vindicated by your data points as it aligns with our results. :-) Your expertise is always welcome! I agree that a custom built heli UAV would be the best variation, and at that point we had to resign simply because we…"
10 hours ago

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"@Stephen: The weight of an imaging computer is trivial to a copter of this size.  It would barely even notice 2kg of payload. And flying in a 25kt gusting wind, again, would be no problem at all.  In fact, in the video above, I believe it…"
12 hours ago

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"JB, Couple data points: I have a <2kg electric heli that flies at 35 m/s for 5 minutes. So no, it won't do the competition, but just as an example of what is possible.  I have another running lower rotor speed that can do 25 m/s for 20…"
12 hours ago
Jason Franciosa commented on Andrew Tridgell's blog post An awesome day at CMAC
"Heli's can perform quite well for endurance and speed, much better than quads, just look at robs G380, a very small heli, and how it performed compared to tons of other platforms for the figure 8 racing. With that said, A plane is a very good…"
12 hours ago
Stephen Gloor commented on Andrew Tridgell's blog post An awesome day at CMAC
"Re the Navio+ - got it working OK however I crashed it and tore off a connector - have not flown it again. Was not happy with the compass errors I got."
13 hours ago
JB commented on Andrew Tridgell's blog post An awesome day at CMAC
"Hey Stephen I second the safety case with the heli, I don't think it will be easy. Getting through the deliverable will be harder now that it's limited to the top 20 only. I'm expecting a few teams to be caught out on the safety case…"
13 hours ago
Stephen Gloor commented on Andrew Tridgell's blog post An awesome day at CMAC
"@Rob_Lefebvre - I also think that a gas helicopter will have a difficult time.  Sure you can carry the fuel however can you fly the same distance against a gusting 25kt wind with a camera and imaging computer?  Can you hover and land and…"
15 hours ago
JB commented on Andrew Tridgell's blog post An awesome day at CMAC
"Rob I didn't mean to imply difficult for a gas heli for the range (although electric is more so) but the time restriction aka average velocity was fairly close when we profiled it. A fixed wing offers an easier to achieve top speed in…"
15 hours ago

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"JB, you made a comment about a 60km round trip in one hour being difficult for a gas powered helicopter.  What is that based on?  I believe it's actually trivial.  Mine burns about 0.5L of fuel in 25 minutes, and I have 2.2L on…"
15 hours ago

Developer
Rob_Lefebvre commented on Andrew Tridgell's blog post An awesome day at CMAC
"On tuning the attitude rate gains on a flybarless heli, I've never had the EKF blow up while doing this.  Ch6 Tuning function makes it easily to slowly and carefully ramp up the gains, and you can see when things are starting to oscillate…"
16 hours ago
JB commented on Andrew Tridgell's blog post An awesome day at CMAC
"@Tridge Our target flight profile is 28m/s (100kmh) for around 45 minutes with 7 minute hover and 10 minute overall reserve, but we are only factoring in much lower wind speeds as the likelihood of high wind in opposing directions whilst in the 1…"
16 hours ago
Jason Franciosa commented on Andrew Tridgell's blog post An awesome day at CMAC
"What about tandem style VTOL plane similar to the v-22 Osprey? Seems to be the best of both worlds with the easiest solution for getting rid of drag from the VTOL component. Although the mechanical complexity is slightly increased."
17 hours ago

Developer
Andrew Tridgell commented on Andrew Tridgell's blog post An awesome day at CMAC
"@JB, I'm surprised you say all electric quadplane will have the speed/range needed. We're banking on needing 28m/s for 45 minutes (to allow for wind, see http://uav.tridgell.net/OBC2016/obc-2016-airspeed-45mins.png) with a 1kg payload.…"
17 hours ago
JB commented on Andrew Tridgell's blog post An awesome day at CMAC
"Thx Tridge Sounds like a plan. I'm willing to contribute where I can to the cause and I remember you like sharing! ;-) I didn't want to sound like I expected that you should share, and by doing so in some way undervalue your contributions!…"
19 hours ago

Developer
Andrew Tridgell commented on Andrew Tridgell's blog post An awesome day at CMAC
"@JB, I'm always in a sharing mood! All the code I write gets on github, usually the same day. We don't yet know what approach we'll take with the quadplane. It may be we decide to concentrate on helis, or we may go all in on the…"
22 hours ago

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

An awesome day at CMAC

Posted on August 30, 2015 at 10:30pm 38 Comments

Anyone who has been involved in aeromodelling for a while dreams of having one of those days when everything works right. It doesn't happen often, but when it does it sure is nice!

CanberraUAV had one of those days yesterday. It was a…

Continue

APM:Plane 3.3.0 released

Posted on May 20, 2015 at 1:27am 148 Comments

APM:Plane 3.3.0 released



The ardupilot development team is proud to announce the release of version 3.3.0 of APM:Plane. This is a major release with a lot of changes. Please read the release notes carefully!



The last…

Continue

APM:Plane 3.2.3 and 3.3.0beta1 released

Posted on February 22, 2015 at 9:47pm 28 Comments

The ArduPilot development team has a special treat for fixed wing users today - a double release!

  • A new stable 3.2.3 release with 3 fixes for 3.2.2
  • A new 3.3.0beta1 release with a lot more changes for wider testing

The 3.2.3 release is a minor update to 3.2.2 with 3…

Continue

APM:Plane 3.2.2 released

Posted on February 9, 2015 at 4:00pm 12 Comments

The Ardupilot development team has released version 3.2.2 of APM:Plane. This is a bugfix release for some important bugs found by users of the 3.2.1 release.



The changes in this release are:

  • fixed a bug that could cause short term loss of RC control with some receiver systems and configurations
  • allowed for shorter sync pulse widths for PPM-SUM…
Continue

Comment Wall (13 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,
3D Robotics
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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