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Randy's Discussions

ArduCopter-3.0 ready for wider use

Started this discussion. Last reply by theo van niekerk 33 minutes ago. 132 Replies

AC 2.9.1 vs 2.8.1 GPS accuracy

Started this discussion. Last reply by Radovan Breuss Jun 2. 302 Replies

ArduCopter 2.9 / 2.9.1 released

Started this discussion. Last reply by leonardthall 2 hours ago. 3684 Replies

 

Welcome, Randy!

Latest Activity

theo van niekerk replied to Randy's discussion ArduCopter-3.0 ready for wider use
"looking good guys thx....willtest soon "
33 minutes ago
Waladi replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Hi Randy and Dev team. Finally.. it's definitely comparable with Naza now, thanks for the hard work. On last RC5, I notice that if I set waypoints (without any RTL on it) and click on "Write WPs" button then my RTL_ALT parameter will…"
35 minutes ago
Виталик replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Team Land. It was he who sits at the penultimate point waypoint or point of land if there are its coordinates."
1 hour ago
Stephen Gienow replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Could you attach your waypoint file?  I'm not quite clear on what you were trying to do."
1 hour ago
Monroe Lee King Jr. replied to Randy's discussion ArduCopter-3.0 ready for wider use
"@Peter would you mind doing a bug report on that? That sounds like something to have looked at."
1 hour ago
Peter Koek replied to Randy's discussion ArduCopter-3.0 ready for wider use
"I have programmed my APM 1 with version 3.0.0 through Arduino and performed a factory reset. All is well, until I enable the optical flow sensor in mission planner, after which the helicopter simply stops responding to a regular connect. It's a…"
1 hour ago

Developer
leonardthall replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"Start with the Altitude Hold, Throttle Rate, and Throttle Accel parameters shown in the screen shot shown above. If you still have the problem drop Altitude Hold P or Throttle Rate P. "
2 hours ago
Itzik Ronen replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Hi Thanks for all the info, its help me to solve the problems with my quad.   where can I download the Mission planner 1.2.53 mav 1.0? where I define the fence radius. Is the radius is always from starting point?   Thanks Itzik  "
2 hours ago

Developer
leonardthall replied to Randy's discussion ArduCopter-3.0 ready for wider use
"This is because  the improvements in the auto navigation has allowed us to fly much more aggressively than we could before. We can easily accelerate five times faster and travel at least six times faster (we need a faster frame to test on), in…"
2 hours ago
Vince Hogg replied to Randy's discussion ArduCopter-3.0 ready for wider use
"I seem to have it sorted this morning but am left with a few questions. I was putting in the manual dec of degrees (-2.3) but when I let it do ‘auto dec’ it filled in -.032 ...OK units are radians? Guess that was also screwing my…"
2 hours ago
Duffy replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"Hi, Sorry for pimping my post.  I have changed some settings and although my auto decent used to be nice and smooth, now the copter seems to be loosing altitude fast and then correcting, and the whole decent sequence is nothing like it used to…"
3 hours ago
novrizal herdananto replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"great to know, thanks Randy.. and the funny thing is.. this is happening only in Bali, when i get back to my city, this issue never happend again.. is there is something in Bali ?"
3 hours ago
iskess replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"Thank you Randy! I thought I was going to need a new board when I saw that baro data. Can I just load the parameters file after the reset and be back up, or do I need to manually redo everything?"
3 hours ago
iskess replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"Cool! I love the hidden stuff."
3 hours ago

Developer
Randy replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"iskess,      Ok, you have this problem.  Somehow the inertial navigation offsets have become NaN, most likely because of a bad accelerometer calibration.  I've seen this a couple of times recently but i'm not…"
4 hours ago

Developer
Randy replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"iskess,      Sounds like the mission planner thinks you're using ArduPlane instead of ArduCopter.  Click about 1cm below and slightly to the right of the the Comport drop down on the top right of the mission planner and…"
4 hours ago

Profile Information

About Me:
I have many years of programming experience in a variety of languages (C, C++, Java, Basic) but in the last year or so I've got hooked on programming an Atmel 128 and really enjoy the hardware side as well. Since mid to late '08 I've been slowly working away on a UAV helicopter with many ideas borrowed from vicacopter
Tell us a bit about your UAV interest
Interested in quads and helis mostly
Hometown:
Tokyo, Japan

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Randy's Blog

UAVs for measuring radiation levels in Japan

Posted on April 11, 2013 at 6:38pm 9 Comments

Two years after the March 11th tsunami in Japan that triggered the Nuclear disaster at the Fukushima power plant, there are still just over 300 thousand people who have not been able to return to their homes due to…

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Dropping a Rover from Hexacopter - Part II

Posted on March 15, 2013 at 12:32am 14 Comments

As a follow up to an indoor test we did a about a month ago (blog post here), Assistant Professor Nagatani-san of Tohoku University, Izu-san of…

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Dropping a Rover from a HexaCopter

Posted on February 11, 2013 at 8:48am 14 Comments

For those interested in using their multicopters to carry heavy objects you might be interested in the test that I performed today with Assistant Professor Nagatani-san of Tohoku university in Japan and Izu-san of…

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Hokuyo Laser Range Finder needs a home

Posted on December 25, 2012 at 9:32pm 18 Comments

I received a 2D laser range finder from the good people at Hokuyo more than 1 year ago.  My plan was to try to use it to improve ArduCopter's…

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Steps toward ESC feedback using SimonK

Posted on September 26, 2012 at 9:43pm 22 Comments

Most of the pro multicopter set-ups have feedback from the ESCs so the controller knows the status of the motors.  This is useful for all kinds of reason including:

    1. debugging the causes of crashes - the controller could log when a motor has stopped running.

    2. allows faster and better reaction to a motor failure perhaps saving you from a crash at least for…

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Comment Wall (16 comments)

At 8:44am on January 5, 2011, Jack said…

Randy

I have been working on my own Quad with the NG code and have setup the Sonar and have it working very well . I have an indoor version with sonar and IR sensors and would like to know were the IR sensors are conected, what pins. I see you were working on implementing this so If you could help with basic setup I can try my hand at testing. Thanks for your work on the Sonar and good luck on the obstical avoidence.

Jack 

At 5:47am on January 30, 2011, Kári Davíðsson said…

Thanks Randy. 

I do not have write access to the svn repository.

So I will send you the changed AP_ADC lib probably later today.

I am not sure if a circular buffer is needed. The beauty of a 1st order IIR filter is that we only need one "old" sample and if a second order is needed only two old samples. But I will look a little better into the filter selection before committing anything to you.

At 5:45am on August 24, 2011, Jiro Hattori said…

Hi Randy

 One of the way to introduce technology of arduino as IMU is that something like what you have done. Most of the Japanese model flyer love to fly traditional helicopter. 

 Another approach may be exhibit something very unique at MAKE fair at Tokyo Institute of Technology.  There will be many open source hardware and software freaks as well.

At 9:10pm on March 7, 2012, Ravi said…

hi randy, i had been following your forum for align450. i just got my APM2 purple. i loaded the ardu heli firmware. everythings looks to be ok on mission planner. but there is no PWM on servo out pins. i armed the APM2 and does gets armed. the radio callibration bars move proportionately. evrything seems to be OK. but in 'status' there is no PWM on channel out pins. it shows '0' PWM on all out channels. can uou please suggets what might be the reason. the APM2 works fine with arduplane and arduquad firmware. ravi

At 5:53am on March 16, 2012, Aerhead said…

Randy

I had a different problem with my APM2 that I was able to solve by following the procedure found in the wiki with a search for APM board problems.  My board would not connect to the planner and it works now.

Good luck

Larry

At 2:18pm on May 15, 2012, wilson javier madrid sossa said…

hello hello hug.
I can help with anything, I did several plannings flight with tri and firmware 2.0.49 and flew very well.
I did a quad and install 2.5.4 program a waypoint flight and the team took off like crazy.WP PIDs are by default and does not really move as you do. can you give me some information.

I appreciate your help

At 4:41pm on May 16, 2012, wilson javier madrid sossa said…

Please can you help me. I was flying my quadcopter and hold position when you turn the team went to ground. these are the last two log. I appreciateprompt help.

2012-05-16%2018-12-25.tlog

At 3:54pm on September 29, 2012, Marooned said…

Hi Randy

After your changes to Optical Flow I'm having troubles with compiling the sources:

ArduCopter.cpp: In function 'void init_ardupilot()':
ArduCopter.pde:-1: error: 'SPI3' was not declared in this scope
ArduCopter.pde:-1: error: 'SPI3_SPEED_2MHZ' was not declared in this scope

I have spi3.h file include in ArduCopter.pde but somehow it's not working that way. I did fetch&rebase with original repo.

At 3:12pm on September 30, 2012, Marooned said…

Sorry for troubles. It's working now. Looks like Arduino IDE had some hiccup.

I should probably move to some better IDE as I'm using Arduino only for compiling/uploading and all files are edited in my fav editor and I have to restart Arduino every time I change something as it doesn't follow outside files changes.

Anyway, sorry for bothering you.

At 6:30pm on December 1, 2012, William Premerlani said…

Hi Randy,

Regarding a question that Shyam asked about gimbal lock when he was trying to use APM to stabilize a camera, he and I finally solved the issue. Here is a link.

No one on diydrones was able to help Shyam, he finally contacted me directly.

Best regards,

Bill Premerlani

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