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Randy's Discussions

ArduCopter-3.0 ready for wider use

Started this discussion. Last reply by Randy 4 minutes ago. 117 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 novrizal herdananto 1 minute ago. 3674 Replies

 

Welcome, Randy!

Latest Activity

novrizal herdananto replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"randy, i also had this sudden fall issue with my tricopter during althold.. still haven't figured it out.. "
1 minute ago

Developer
Randy replied to Randy's discussion ArduCopter-3.0 ready for wider use
"AlexO,      No need to modify any of the stabilize or rate gains (except for the loiter rate) as part of the upgrade."
4 minutes ago

Developer
Randy replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"iskess,      Sounds like it's going into some kind of failsafe.  Battery most likely.  Do you have a dataflash log?"
6 minutes ago
Alex O. replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Randy, Could you please clarify the Rate and the Stabilize P values for the new v3.0.0 version? I watched your video on how to adjust the stabilize P with channel 6. I am using 2.9.1 and about to switch to 3.0.0 My rate and stabilize P values are…"
6 minutes ago
iskess replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"My Tricopter altitude hold is no longer working. In altitude hold I can add full throttle and the copter descends to the ground. I can cut the throttle off, and it still descends to the ground at the same slow rate. Loiter is the same. Stabilize…"
33 minutes ago

Developer
Randy replied to Randy's discussion ArduCopter-3.0 ready for wider use
"I made a mistake when doing the release and accidentally released out of our master branch instead of the special purpose ArduCopter-3.0 branch.  The effect is that an untested feature called RCMAP (which allows the pilot to configure which…"
34 minutes ago

Developer
Randy replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Antonie,       Not much has changed between -rc5 and 3.0.0.  Just a few bug fixes to circle mode and we reduce the Alt Hold P gain from 2.0 to 1.0.   Ah, and we added the WPNAV_ACCEL…"
39 minutes ago
Antonie Kruger replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Hi Guys, Thanks for the hard work and new killer release. I've tried rev.3 since rc2 and have flown every rc up to rc5 on my big H quad(Galactica). I took up rc5 yesterday(not sure what has changes to release 3.0.0) and experienced the great…"
1 hour ago
Jonathan Hair replied to Randy's discussion ArduCopter-3.0 ready for wider use
"EDIT: Now it is working... Not sure what was going on. Cheers."
1 hour ago
Jonathan Hair replied to Randy's discussion ArduCopter-3.0 ready for wider use
"All, I am having trouble with telemetry now that I upgraded to 3.0 on my quad. It works fine and allows me to change the parameters, gains, and view its location, but the left side of the 'flight data' display is not working. It does not…"
1 hour ago

Developer
Randy replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Dany,     Thanks and done."
1 hour ago

Distributor
Dany Thivierge replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Thanks Randy and if you could edit the main top post for this and the note around how to now play with acceleration ... configurable ust reduce the WPNAV_ACCEL parameter from 250 to 100 as many will want to make the copter slower…"
2 hours ago

Developer
Randy replied to Randy's discussion ArduCopter-3.0 ready for wider use
" Nothing to add except a video that shows that we've seen this problem plenty and at least some of the time the compassmot can sort it out."
2 hours ago
Bill Bonney replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Sounds like you have current flowing into the APM on GND. This raises the GND level voltage and decrease the differential. Try disconnecting the GND from the ATTO sensor. There's a common GND, so it should work ok."
3 hours ago
John Hanson replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Thanks! This explains it - my quad , flies great under 2.9.1b, but under 3.0 it always yaws left similar to the calibrate video, and has bad loiter. I tried calibrate compass and compassmot several times - I never got a interference level less than…"
3 hours ago

Developer
Randy replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Martin,      leave min at 0.  Make the Max the maximum declination you think you might need divided by 10.  So for example min = 0, max = 2.0 would give you +- 20 degrees of tuning which should be enough."
3 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…

Continue

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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