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Randy
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  • Tokyo
  • Japan
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Randy's Groups

Randy's Discussions

PixRacer with Ardupilot

Started this discussion. Last reply by Cala 23 hours ago. 46 Replies

Ardupilot on QC Snapdragon

Started this discussion. Last reply by Marc Dornan Jan 27. 2 Replies

Pixhawk 1MB flash limit

Started this discussion. Last reply by Randy Jan 5. 70 Replies

 

Welcome, Randy!

Latest Activity


MR60
Hugues replied to Randy's discussion figuring out the Antenna Tracker
"here is the bin"
45 minutes ago
Greg Covey replied to Randy's discussion figuring out the Antenna Tracker
"I uploaded Jahob's v0.7.2 firmware for Pixhawk and both yaw and pitch worked fine. This is good evidence to focus on an issue with the AT v0.7.5 and v0.7.6 releases. I attached the AT and quadcopter logs from the Jakub firmware test. One…"
1 hour ago
Cala replied to Randy's discussion Copter-3.3 beta testing
"Arthur, perhaps it's an interesting topic to open a post and discuss about it and change experiences, we learned many of this things from the worse way ;) sometimes. Thank's for share."
2 hours ago
Greg Covey replied to Randy's discussion figuring out the Antenna Tracker
"The TLOG is for telemetry only. Please post the .BIN file for data logging. "
2 hours ago
Arthur replied to Randy's discussion Copter-3.3 beta testing
"Hello. Well, if you speak about crashs of drones, so maybe this information will be helpful for you http://www.rcfair.com/en/blogs/view_entry/13279/"
2 hours ago

MR60
Hugues replied to Randy's discussion figuring out the Antenna Tracker
"forgot the tlog. Here it is."
3 hours ago

MR60
Hugues replied to Randy's discussion figuring out the Antenna Tracker
"Also figuring out antenna tracker, I made this video clip to illustrate where I'm at (not so far obviously). The setup is a pixhawk used on the antenna tracker, in the middle between the quadcopter and a PC running mission planner (all links…"
3 hours ago
Duffy replied to Randy's discussion Copter-3.3 beta testing
"Thanks Hughes,  I just used the supplied pads and mounted on the centre of the frame. Shall I go with a stiffer foam?"
5 hours ago

MR60
Hugues replied to Randy's discussion Copter-3.3 beta testing
"Hi Duffy, I know that feeling of "unstable" quad. What happened in my case was a "too loose" mounting of Pixhawk on the frame. Before tuning your PIDs (software mean), you have to check the hardware first by having the pixhawk…"
5 hours ago
Duffy replied to Randy's discussion Copter-3.3 beta testing
"Randy,  Just a question again on low KV motors ( for my large 29" prop quad)  First flight with standard PIDs was wobbly with oscilations see first graph of roll vs desroll  so I cranked up the PID Rate P to 3 and the higher…"
6 hours ago
Greg Covey replied to Randy's discussion figuring out the Antenna Tracker
"Randy, Nice catch on the firmware in the hexacopter. It was frozen for an AMA demo last August and I never updated it. It was my Tarot 650 Sport quadcopter that I was using to test the AT last summer so I fired that up and it had v3.2 copter code in…"
19 hours ago
Cala replied to Randy's discussion PixRacer with Ardupilot
"Is there a cage for the pixracer to protect?"
23 hours ago
Richard Kennedy replied to Randy's discussion PixRacer with Ardupilot
"@ Bill Bonney   Hey will Mav Pilot be able to direct connect with the pixracer being as it has it's own on board wifi? That would be slick!  "
yesterday

Developer
Randy replied to Randy's discussion figuring out the Antenna Tracker
"Greg, Ok, so my guess is the vehicle is sending out a bad barometer pressure soon after startup and the tracker is capturing this in it's "altitude_difference" variable.  In case anybody is interested, the code in question is…"
yesterday
Richard Kennedy replied to Randy's discussion Copter-3.3 beta testing
"I've had dozens of flights on  3.4 [ That I loaded in December ] no problems at all. I armed with it in my hand and launched from my boat it works great!! :] However I flew last night and had verbal error piped out on my Taranis. EKF error…"
yesterday
Greg Covey replied to Randy's discussion figuring out the Antenna Tracker
"Randy, Feel free to ask for anything because our goal is common; to make a better AT or a better understanding of how it currently works. I downloaded the last two logs from my hexacopter and attached them here. I don't understand why the time…"
yesterday

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

Randy's Photos

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Randy's Blog

Copter-3.3 released!

Posted on October 8, 2015 at 9:58pm 80 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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Copter-3.3 ready for wider use

Posted on September 28, 2015 at 7:18pm 82 Comments

After months of testing by the beta-testing team, Copter-3.3 is ready for wider use.  Similar to the Copter-3.2 release this is a "soft launch" meaning that for the next couple of weeks, we are asking users to load the new version using the Mission Planner's "Beta firmwares" link…

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NAVIO+ Linux board with APM:Copter 3.3

Posted on June 3, 2015 at 12:00am 23 Comments

Click here to skip the commentary and just see the vehicle flying.

The video above shows my first attempt (which was successful) to fly APM:Copter using a Linux board (…

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Multi-Vehicle testing with APM:Copter, Tracker and Mission Planner

Posted on May 3, 2015 at 8:21pm 36 Comments

For some tasks (like Search and Rescue and mapping) what you can do with one vehicle, you can probably do faster with multiple vehicles.  To test how well it works in practice I tested…

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ArduCopter 3.2.1 released

Posted on February 11, 2015 at 1:00am 94 Comments

Warning: there was a period of about 12 hours after this blog was first posted where an older version (AC3.1.2) replaced AC3.2.1 for APM2.  If you think you may have downloaded for the APM2 during these initial period, please check the version on your board by looking at the title bar of the Mission Planner (see…

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Comment Wall (31 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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