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John Arne Birkeland
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  • Norway
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John Arne Birkeland's Groups

John Arne Birkeland's Discussions

Problem maintaining pitch when accelerating / decelerating.

Started this discussion. Last reply by Michael Zaffuto Jul 2, 2010. 29 Replies

Servo problem with the new red (328) cards?

Started this discussion. Last reply by Chris Anderson May 3, 2009. 22 Replies

 

John Arne Birkeland's Page

Latest Activity


Developer
John Arne Birkeland commented on Cameron Sickbert's blog post Emergency Response UAV Now on Indiegogo!
"Off the top of my head you need some kind of CF rods that bolts into place in the joints to get decent strength and rigidity. But this is a typical example of how such things quickly gets tricky. To loose a fit and you get unwanted movement, and to…"
Jul 10

Developer
John Arne Birkeland commented on Cameron Sickbert's blog post Emergency Response UAV Now on Indiegogo!
"Those folding wings are going to be an endless source of frustration as you progress towards a working solution."
Jul 10
Gary McCray commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"Hi Enal, although there are other autopilots that will run ArduPilot (what you probably want), the best and best supported one is almost certainly the Pixhawk Cube from ProfiCNC, http://www.proficnc.com/ also look at the arducopter links at the top…"
Jul 6

Developer
John Arne Birkeland replied to Aevi Goth's discussion Heavy Lift (20-60Kg) Frames ... who has one?
"There is no perfect design. It's all a balance act between weight, strength, cost and being easy to build/repair. The "plate and tube" design is very common because it utilize mass produced CF parts to lower cost and make…"
Jul 5
Enal commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"The recent updates has totally grounded my DJI fleet for my new UAV program and I am wanting to venture out into something new. Can someone point me to the correct forum to get the best info on the flight control system (PixHawk). I've been an…"
Jul 4
Nikola Rabchevsky commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"Perhaps I should embellish my earlier comment.  The software is fine.  Pixhawk is fine.  But there isn't anybody making a non-MacGyver ground control station that you can fully program yourself.  (Yes, Futaba, I'm…"
Jul 4
Marc Dornan commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"Well Gary that issue is a bigger concern. But no matter how big the fire lit under Ardupilot I just cannot see anyone offering systems that will makes people switch. I wish it were not so."
Jul 4

Moderator
Gary Mortimer commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"There is bigger COTs news coming that will light a fire under Ardupilot. Oh and thishttps://www.suasnews.com/2017/05/global-information-gathering-network-uas-dji-data-collection/"
Jul 3
Marc Dornan commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"Solo has a hacker and hobbyist future. If you need to capture imagery for a living you simply are going to use DJI, forced updates and all. It really does not bother me TBH. I want DJI to makes these things idiot proof. If I want to fly…"
Jul 3
Fnoop commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"@Gary McCary - all of the higher level functionality in the gimbal/gopro link/smartshots/wifi control/video etc is all proprietary.  There is no equivalent in ardupilot.  3dr do a disservice by not releasing this code to the tens of…"
Jul 3
Gary McCray commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"Hi Nikola and Dusan, The fact is that ArduPilot is the open source basis of all the code that the Solo uses.3DR took it off grid with some of the control stuff, but you will find most of it and better in the current versions of Arducopter. And…"
Jul 3
Dusan commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"Unfortunately, I don't see this happening anytime soon. 3DR lost its bearings on consumable/prosumable  drone market. Even if they ever publish closed code ( highly doubtable, and why should they ) they will never go back in manufacturing.…"
Jul 3
Nikola Rabchevsky commented on John Arne Birkeland's blog post DJI issues forced update to GO 4 app
"The 3DR Solo needs to get resurrected and fully open all the source code.  We can't have the COTS UAV community ruled by DJI."
Jul 3

Developer
John Arne Birkeland posted a blog post

DJI issues forced update to GO 4 app

As some of you may be aware off, there have been a lot of modding/hacking activity with regard to DJI products lately. In what seems to be an response to this, DJI has just taken the unprecedented step of forcing an app update on all users not running the latest GO 4 v.4.1.3 version.Personally I find this action worrying…See More
Jul 2

Developer
John Arne Birkeland commented on CrashingDutchman's blog post Drone Pilots Are Buying Russian Software to Hack Their Way Past DJI's No Fly Zones
"This issue is little bit more complex then just removing NFZ restrictions. Lately DJI have been enforcing the use of GEO restrictions on top of the normal NFZ restrictions. The problem with this is that while NFZ's are mandatory as they should…"
Jun 22

Developer
John Arne Birkeland commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"The difference is that the Gyro bias repeatability, in-run stability etc. numbers from the Honeywell are actual confirmed numbers, that they guarantee as long a the IMU is used withing the operational parameters. Our numbers are more a kind of…"
Jun 21

John Arne Birkeland's Blog

DJI issues forced update to GO 4 app

Posted on July 2, 2017 at 6:56am 10 Comments

As some of you may be aware off, there have been a lot of modding/hacking activity with regard to DJI products lately. In what seems to be an response to this, DJI has just taken the unprecedented step of forcing an app update on all users not running the latest GO 4 v.4.1.3 version.

Personally I find…

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ArduPilot and DroneCode part ways

Posted on September 9, 2016 at 1:00am 140 Comments

Source: http://discuss.ardupilot.org/t/ardupilot-and-dronecode/11295

For the attention of the users, supporters, fans and corporate users of ArduPilot:

The ArduPilot project is going through a transition. We…

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Fast accurate LIDAR

Posted on June 2, 2016 at 2:06am 5 Comments

Interesting article in EE Timers Europe. http://www.electronics-eetimes.com/news/light-centimetre-level-slam-drones/

Working deeply with CERN (European Centre for Nuclear Research)…

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GoPro announces third-party developer program

Posted on April 15, 2016 at 1:23am 1 Comment

Article from ZDNet.

GoPro quietly announced its Developer Program on Tuesday, as it looks to incorporate…

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DJI, Parrot, GoPro and 3DR leave Small UAV Coaliton

Posted on April 3, 2016 at 6:30am 7 Comments

From USA Today article Drone coalition splits as DJI, GoPro faction quits.

SAN FRANCISCO — The national group that represents companies that make and sell drones has split, with those focused on consumers…

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Comment Wall (7 comments)

At 3:30am on April 17, 2011, thomas marschall said…
Hei

Fant deg her på diydrones og tipper du har arducopter? Jeg prøver å kartlegge antall piloter i Norge for
å skrive en artikkel om dette.

Også skal vi i løpet av året organisere en arducopter / uav dag og du er kanskje interessert?
--

Vennlig hilsen / with regards

Thomas Bjørn Marschall

At 3:31am on April 17, 2011, thomas marschall said…
Hei

Fant deg her på diydrones og ser du kanskje har arducopter? Jeg prøver å kartlegge antall piloter i Norge for
å skrive en artikkel om dette.

Også skal vi i løpet av året organisere en arducopter / uav dag og du er kanskje interessert?
--

Vennlig hilsen / with regards

Thomas Bjørn Marschall
At 6:31pm on April 17, 2011,
Developer
John Arne Birkeland
said…
Heisann. Har vel strengt tatt ikke et arducopter da jeg liker å bygge mest mulig selv, men flyr quad mm. ja. :) Noe samling høres moro ut.
At 9:30pm on September 1, 2011, Ravi said…

Hi john, i am able to get PPM output from a PIN of Thomas Scherrer 12 channel receiver. is the PPM sum signal compatible with the ATmega2560 PPM decoder or i have to decode it through a interface. actually i am more of an aircraft engineer and less of a electronic engineer. the signal is coming from a Futaba 7C Tx onto a 12 channel thomas Sherrer Rx on 12 channel pin. can i give it directly to PIN 1 of APM after shortening PIN 2 &3 or i have to use an interface using PPMencoder. please help. i am currently using APM2.23. thanx, ravi

At 3:43am on September 2, 2011, Ravi said…

Hi john, i tried giving PPM to channel 1 PIN of APM and shortend PIN 2 & 3. did not work. I am not getting PWM out to servoes. Thomas Scherrer Rx takes PPM pulse from Futaba 7C Radio. It has a UHF RF Module which has been connected to the PPM out of Futaba 7C, this drives a 12 channel Rx also designed by Thomas Scharrer. I think the PPM pulse form futaba 7C should pass on as it is to the Thomas Scharre Rx which has a PIN for direct PPM out? what should i do next.

At 7:33am on August 18, 2012, Adam Scriven said…

Hey John!

Do you have any updates on Crawler1? What do you think of the Redcat Rockslide 1/8th? How does it hold up to your use/abuse? One of the things about the RS is that the only place making after-market parts for it seems to be RedCat itself, not many 3rd party manufacturers. Has that been a problem?

Thanks for any updates you can provide! ;)

At 8:33am on April 15, 2013, baufay patrick said…

Mister.
I seek information for zero ys-x4 wiffi
you to be able to help me if me question poses has you
I thank you for answer
I am of Belgium
patrick.baufay@skynet.be

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