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Randy
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  • Tokyo
  • Japan
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  • Victor Peñalver
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  • Inertial Stability Systems
  • Lincoln Gerken Glória
  • Mubbasher Mukhtar
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  • Alex Black
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Randy's Groups

Randy's Discussions

PixRacer with Ardupilot

Started this discussion. Last reply by Randy Jan 8. 1182 Replies

Ardupilot on QC Snapdragon

Started this discussion. Last reply by Bill Piedra Apr 10. 9 Replies

Pixhawk 1MB flash limit

Started this discussion. Last reply by Mark Brummett May 11, 2016. 85 Replies

 

Welcome, Randy!

Latest Activity


Developer
Randy commented on Kieran's blog post Using APSync to Build a Long Range Digital Video Link
"Some useful links for people related to ApSync: wiki: http://ardupilot.org/dev/docs/apsync-intro.html gitter chat: https://gitter.im/ArduPilot/companion support discussion: http://discuss.ardupilot.org/c/apsync-companion-computers If you're a…"
Apr 11

Moderator
Bill Piedra replied to Randy's discussion Ardupilot on QC Snapdragon
"Hi guys.  I'm a Developer Advocate for Qualcomm and can help you with any problems you may encounter configuring Snapdragon Flight.    You can find the ESC Board…"
Apr 10
Pavan Shetty replied to Randy's discussion Optical Flow discussion thread
"Hello, I have followed the steps to setup the px4flow but on mission planner I see "Bad OptFlow Health". opt_m_x and opt_m_y values are 0. Thanks"
Apr 7
Abimael suarez replied to Randy's discussion Ardupilot on QC Snapdragon
"HiRandy. how to calibrate the ESC board of the snapdragon? whe i try calibrate esc in qgroundcontrol i can because the comunicaction is Uart."
Apr 4
Austin Suhler replied to Randy's discussion Optical Flow discussion thread
"All- I documented my experience 2 summers ago with Optical Flow and Lidar on a Pixhawk. I spent a lot of time working on optimizing my performance, and learned a lot along the way. It's been a little while, but if you have any questions,…"
Apr 4
Robert Brown replied to Randy's discussion Optical Flow discussion thread
"Hello, I am working with the PX4 Flow and trying to connect it to a pixhawk mini.  For some reason, I can't find a scrap of documentation for anything related to the pixhawk mini.  So, I come to y'all!  The issue is that…"
Apr 3

Developer
Philip replied to Randy's discussion Optical Flow discussion thread
"Best ask this at discuss.ardupilot.org"
Apr 2
Grzegorz Wójcik replied to Randy's discussion Optical Flow discussion thread
"Did anyone manage to set up AC 3.4.6 with PX4FLOW properly and did fly with it? I am trying to fly (outside) with my quad (Copter 3.4.6) together with PX4FLOW and Lidar Lite V3 (no problems with lidar), however I am struggling due to problems with…"
Apr 2

Developer
Randy replied to George Piper's discussion Uploading Problem w/ Programming APM2.5 using Arduino IDE
"Best to join us over on discuss.  Also best to give up on the AVR boards and move to something more advanced like a Pixhawk or NAVIO2 or something like that."
Mar 27

Developer
Randy replied to George Piper's discussion Uploading Problem w/ Programming APM2.5 using Arduino IDE
"maybe try this link? avrdude.conf by the way, few of the ardupilot developers use diydrones anymore.  better to look for us over on ardupilot.org. or in particular to post questions in the ardupilot forum."
Mar 26
Jeremy Stromsoe replied to Randy's discussion figuring out the Antenna Tracker
Mar 5
LEE CHER CHUAN commented on Randy's blog post Steps towards S&R in Japan
"Hello. Sorry to dig out such an old post. Any idea on how to connect xbee for the telemetry. Thinking of replacing the SiK Radios.  I tried testing with XCTU, it works. However, when i connect to pixhawk and mission planner, it shows fail to…"
Jan 30

MR60
Forrest Frantz left a comment for Randy
"Randy - Always impressed by your work. Working on a project.  Need your advice. Would like to discuss it with you. forrestfrantz@gmail.com"
Jan 27
David Hasko commented on Randy's blog post Terrain Following Missions using Lidar
"When will the lidar terrain following will be implemented in Plane?"
Jan 26

Developer
Randy replied to Carolina Monterrosa's discussion Drone loses configuration in the group ArduCopter User Group
"Carolina, By the way, ArduPilot support is mostly done over in the ardupilot forums now and most developers don't spend much time on DIYDrones anymore. I think the issue is likely a damaged Fram chip on the board (somewhat unlikely) or…"
Jan 24
Patrick Duffy replied to Randy's discussion figuring out the Antenna Tracker
"@Mike, thanks for the tip.  "
Jan 23

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: https://www.youtube.com/user/rmackay9/videos

facebook: https://www.facebook.com/groups/ArduPilot.org/
gitter: https://gitter.im/ArduPilot/ardupilot/
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

Randy's Photos

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Randy's Blog

Copter-3.4's polygon fence

Posted on August 16, 2016 at 6:12am 3 Comments

One of the more important features that will arrive with Copter-3.4 (still in beta testing) is the Polygon Fence (the full list of features can be seen in the …

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AntennaTracker v1.0 on NAVIO2 with Bebop2

Posted on July 28, 2016 at 2:07am 28 Comments

ArduPilot's Antenna Tracker firmware has been making some quiet progress over the past few months.  They're all documented in the …

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Copter-3.4 beta testing starts

Posted on May 30, 2016 at 10:30pm 25 Comments

Copter-3.4-rc1 has been released for beta testing and can be downloaded using the Mission Planner's Install Firmware screen's beta firmware link.  Some of the changes since Copter-3.3.3 are listed below.

1) EKF2 allows "boat mode" (attitude initialisation without gyro calibration)

2) …

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Terrain Following Missions using Lidar

Posted on May 13, 2016 at 11:30pm 28 Comments

The upcoming Copter-3.4 release will include terrain following support for mission commands using either Google earth altitude data or a Laser Range Finder.  This is a demonstration video shot at a ski hill near my home in Karuizawa Japan of this new feature.

For this test I used a venerable 3DR IRIS with a …

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Copter-3.3 released!

Posted on October 8, 2015 at 9:58pm 81 Comments

After months of testing by the beta-testing team and no significant issue during the soft release, Copter-3.3 has been released.  You can load this version onto your vehicle using the…

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Comment Wall (37 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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