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Randy's Groups

Randy's Discussions

ArduCopter-3.1 released!

Started this discussion. Last reply by Graham Dyer 1 hour ago. 1126 Replies

Running SITL on Windows

Started this discussion. Last reply by Randy Mar 23. 33 Replies

AC-3.1 autotune support discussion

Started this discussion. Last reply by Facundo on Monday. 541 Replies

 

Welcome, Randy!

Latest Activity


Moderator
Graham Dyer replied to Randy's discussion ArduCopter-3.1 released!
"Thanks John, please let me know if you test it (without sonar), I'd be very interested to know if it's my board or APM1's in general."
1 hour ago

Developer
Randy replied to Ben Snyder's discussion Y6 not lifting off in the group ArduCopter User Group
"Ok, great that it's fixed now.  I wonder how that got changed."
4 hours ago
Luis Vale Gonçalves replied to Randy's discussion ArduCopter-3.1 released!
"oops now I know what happened to me... I was pulling my hair trying to find some clue on my log file, and it really was a change from hexa modehttps://www.youtube.com/watch?v=YQgAoOQ1Xng"
5 hours ago
Pedals2Paddles replied to Randy's discussion ArduCopter-3.1 released!
"Wow, that is very cool. Ok, I'm with Weidan, when/where/how do we use this!?  It would be nice if it "braked" faster though.  When you let off the sticks, it drifts to a stop.  It would be nice if it would "slam on…"
5 hours ago
mP1 replied to Randy's discussion ArduCopter-3.1 released!
"HM is like a faster loiter. When your sticks are centered, its the equivalent of loiter , but when you start moving about the sticks, it changes to alt-hold with the direction your sticks are taking the copter. Search YT for Marco Robustini and…"
5 hours ago
Pedals2Paddles replied to Randy's discussion ArduCopter-3.1 released!
"At the risk of sounding stupid, what is hybrid mode??"
5 hours ago
Weidan replied to Randy's discussion ArduCopter-3.1 released!
"I can find hybrid flight mode in MP1.30 with arducopter firmware 3.1.3 now。Does it mean the firmware support hybrid mode?"
5 hours ago

Developer
Randy commented on CSGShop's blog post UBLOX NEO-M8N GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS receiver EVAL module ready for purchase
"On another note, I see some GPSs have a square antenna but this one looks like it has a pole antenna.  Does it matter?  Does one type perform better than the other?"
5 hours ago

Developer
Randy commented on CSGShop's blog post UBLOX NEO-M8N GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS receiver EVAL module ready for purchase
"With ArduCopter 3.2 (on Pixhawk) we will have some support for dual GPSs.  In the dev code at the moment it's possible to connect two GPSs but only the one connected to Telemetry 1 is actually used for navigation.  The second one is…"
5 hours ago

Developer
Randy commented on Thomas J Coyle III's blog post HummingBoard, The Vastly More Powerful Raspi
"Looks line a fine board. Tridge and I and some of the others on the dev team are mostly moving towards the ODroid which is probably even a little faster than the one linked.  Of course, it's not just about speed though, it's also…"
5 hours ago
Pedals2Paddles replied to Randy's discussion ArduCopter-3.1 released!
"The wizard is a big time killer for that.  If you accidentally click wizard, it will default your frame type to +.  You don't have to click or do anything else.  So just accidentally clicking the wizard will change your frame…"
6 hours ago
Andy replied to Randy's discussion ArduCopter-3.1 released!
"same here had a crash since it was on + mode instead of x.. justed updated the MissionPlaner connected once and there it went from x to + !!! Andy"
11 hours ago
Reuben replied to Randy's discussion ArduCopter-3.1 released!
"+ 2   it happened to me as well .. i had one flight after doing setup and noticed it was not responding correctly to radio inputs .. landed and checked all settings in MP . found it was + instead of my first selection of X .. since then i have…"
11 hours ago

Developer
Randy commented on TheBadTomy .'s blog post Hover Mode for a fixed birotor VTOL
"I ping'd Uemura-san earlier today and he's sent me the code now so I'll try and get it merged into AC3.2.  At first glance it doesn't look too bad, mostly just a new way to mix the motors and servos."
17 hours ago
John Campen replied to Randy's discussion ArduCopter-3.1 released!
"Graham, I had 3.1.2 working fine with Alt Hold on my APM1 board. Ive now loaded 3.1.3 but haven't tried it with Alt_Hold yet."
20 hours ago
Jay Galleno replied to Randy's discussion ArduCopter-3.1 released!
"+1 I've notice it as well. "
21 hours ago

Profile Information

About Me:
Lead developer of ArduCopter. I coordinate releases, provide support for users having trouble with their copters, add new features (most often based on ideas and suggestions from the community). I also help others get their code integrated into ArduCopter.

You can find numerous video tutorials from me here: http://www.youtube.com/channel/UCm393BzMOyRPUo8MtKp5alg
Please tell us a bit about your UAV interest
Interested in quads and helis mostly. I got my start in this field by reading the electronics tutorials from Sparkfun and from watching the success of Jack Crossfire's vicacopter. I've learned an enormous amount from the combined wisdom of the people on the DIYDrones forums and members of the core dev team including Jason Short, Tridge, Doug Weibel, Leonard and many more.
Hometown:
Karuizawa, Japan

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Randy's Blog

GPS Glitch detection in AC3.1

Posted on December 14, 2013 at 6:42am 24 Comments

AC3.1 is going out very soon and includes a new safety feature called GPS glitch detection.  There's a wiki page about it but I'd like to highlight how it works because it's near the top of the list of safety issues.  The method…

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Dropping a Rover from Hexacopter - Part III

Posted on August 22, 2013 at 7:40pm 30 Comments

As a follow-up to the rover drops #1 and #2 I spent a day with Assistant Professor Nagatani-san of…

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UAVs for measuring radiation levels in Japan

Posted on April 11, 2013 at 6:38pm 11 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 13 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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Comment Wall (21 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,
T3
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,
T3
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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