Developer
Randy
  • Male
  • Tokyo
  • Japan
Share

Randy's Friends

  • Eric Zhu
  • Juan Manuel Uteda
  • mk
  • Gokmen Inik
  • befinitiv
  • Enzo Buono
  • KB
  • Cesar Vargas
  • _maxgr
  • Matthieu Lapierre
  • roy elyakim
  • Ryan McDonnell
  • Fabio Calderón
  • peter
  • Marco Paggot

Randy's Groups

Randy's Discussions

Copter reliability vs functionality

Started this discussion. Last reply by Marco Robustini Jun 19. 204 Replies

Copter-3.3 beta testing

Started this discussion. Last reply by Michael 1 hour ago. 2020 Replies

ArduCopter-3.2.1 Beta Testing

Started this discussion. Last reply by CARLOS EDUARDO BOLOGNESE Jun 29. 584 Replies

 

Welcome, Randy!

Latest Activity

Michael replied to Randy's discussion Copter-3.3 beta testing
"Very glad I saw this post. I was getting very frustrated with my Hoverthings modified FPV-Pro. @ 0.1 I was getting very high numbers all around (Stab R - 13~ Stab P 16~), etc... it was a very angry bee in the air and fpv and gopro vid showed it,…"
1 hour ago

Developer
Randy replied to Eric Compas's discussion Lost video feed after 1.0.5 update in the group 3DR SOLO
"Jubal, Ok, thanks.  I don't seem to be able to switch it to 1080/30 "M".  My GoPro 3's display says 1080 - 30 and it has a little "W" up by the video camera icon.  I can't seem to put it into…"
1 hour ago
Swift replied to Randy's discussion Copter-3.3 beta testing
"Sorry to interrupt. this is just a 30 seconds video of Copter running on a MOD Talon V2 HK frame. 3DR PixHawk on board. Unfortunatly, bad pilot (me) and to big battery (5000mha) on board result in a big fail... and no time to try try loiter and…"
3 hours ago
Adolfo Rodrigues replied to Randy's discussion Copter-3.3 beta testing
"Can I autotune with RC feel already set to 25? If the end result still makes it vibrate should I take autotune values and make them 25% smaller?"
3 hours ago

Developer
leonardthall replied to Randy's discussion Copter-3.3 beta testing
"Hi Adolfo, Sorry missed that. Yeh, try the RC Feel and if you want to try autotune again use aggr of 0.05. Your tune looked very nice so I think you can handle a finer tune. We set it to 0.1 so it will handle the higher vibration and flex a lot of…"
3 hours ago
Adolfo Rodrigues replied to Randy's discussion Copter-3.3 beta testing
"Tomorrow I'll give it a try but the auto tune values made the motors vibrate. What should I do about that? Any aggr value I should try??"
3 hours ago

Developer
leonardthall replied to Randy's discussion Copter-3.3 beta testing
"Hi Pomaroli, Looks good to me. I can't see anything that makes me worry about it. And if it flies well, that is the acid test. Enjoy!!"
3 hours ago

Developer
leonardthall replied to Randy's discussion Copter-3.3 beta testing
"Hi Adolfo, Drop your RC_Feel to 25 and see if that fixes the problem. If it does put your pids back to the autotuned numbers and see how it feels. "
4 hours ago
Adolfo Rodrigues replied to Randy's discussion Copter-3.3 beta testing
"Tarot 680 pro frame.  13x5.5 cf blheli damped light esc 3.3 RC7 I can ear motor vibrations from the resulting autotune and hexa is twitchy around middle stick, mostly on the roll. I reduced resulting values 15% afterwards. The high vibs seam to…"
5 hours ago
Pomaroli replied to Randy's discussion Copter-3.3 beta testing
"Leonard,could you please take a look on attached autotune file, seems the PID's are getting really high.The PID's were pretty high since first autotune, for STB pitch about 15-16. Recently for maintanance just optimized some things and…"
5 hours ago
Pomaroli replied to Randy's discussion Copter-3.3 beta testing
"Leonard,could you please take a look on attached autotune file, seems the PID's are getting really high.The PID's were pretty high since first autotune, for STB pitch about 15-16. Recently for maintanance just optimized some things and…"
5 hours ago
SwissFreek replied to Randy's discussion Copter-3.3 beta testing
"I don't think that's my issue. GCS says my ATC_ACCEL_Y_MAX is 27000. When I said my tail was sluggish, I just meant when I was wagging the tail by hand (with the props off and motors spooled up so the yaw correction kicks in) to confirm…"
9 hours ago
Michael replied to Randy's discussion Copter-3.3 beta testing
"Hello SwissFreek, I'm not completely sure what the issue is, but I noticed the same thing back in 3.3-rc5. It has something to do with ATC_ACCEL_Y_MAX.  leonardthall reviewed my log and found this setting to be at 9000 and suggested…"
10 hours ago
SwissFreek replied to Randy's discussion Copter-3.3 beta testing
"So... what has changed in 3.3-rc7 for tricopters? Had a reasonably well-flying RCExplorer V3 with 3.3-rc5. Updated to 3.3-rc7 this morning and now I have a whirling ball of death with a broken battery plate. Response of the servo to being picked up…"
11 hours ago
Andre replied to Randy's discussion Copter-3.3 beta testing
"Thanks Leonardt, I´ll follow your hint after the Rain stops:-) But how it could be possible the the Copter flies well with the Futaba/Jeti Transmitter and with the Taranis I've the strange behavior?"
15 hours ago
Andre replied to Randy's discussion Copter-3.3 beta testing
"Thanks for this hint!, I just updated the d4r2 Firmware to the 27ms CPPM .  Unfortunately the same behavior!"
15 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

Randy's Photos

Loading…
  • Add Photos
  • View All

Randy's Blog

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 (…

Continue

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

Posted on May 3, 2015 at 8:21pm 24 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…

Continue

ArduCopter 3.2.1 released

Posted on February 11, 2015 at 1:00am 83 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…

Continue

Steps towards S&R in Japan

Posted on December 22, 2014 at 6:30pm 8 Comments

We seem to have a lot of natural disasters here in Japan (eruptions, mud slides, earthquakes) and like everywhere else we are counting on UAVs to…

Continue

ArduCopter 3.2 Released

Posted on November 24, 2014 at 8:56pm 242 Comments

ArduCopter 3.2 (aka APM:Copter) has been released as the default version replacing AC3.1.5. This is the exact same version that we invited all users to test two weeks ago.  Users who wish continue using AC3.1.5 can find it under the "Pick…

Continue

Comment Wall (27 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

You need to be a member of DIY Drones to add comments!

Join DIY Drones

 
 
 

DIY Drones Monthly
Newsletter

Groups

Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Pylon Race, is here

© 2015   Created by Chris Anderson.

Badges  |  Report an Issue  |  Terms of Service