Developer
John Arne Birkeland
  • Male
  • Norway
Share

John Arne Birkeland's Friends

  • Tilman Griesel
  • Graham Harding
  • Dieter Gross
  • Solar System Express
  • Demetris Zavorotnitsienko
  • Hamilton From Above
  • Bill James
  • Shyam Balasubramanian
  • Bill Bonney
  • Nick Goodey
  • Dean Wynton
  • Joachim
  • Evie Alani
  • deadfalkon
  • Alex O.

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 Teejay's blog post Pixhawk packaging?
"And two of the three links you posted does exactly that. Break trademark by using the Pixhawk and PX4Flow brand names. I am very pro open source and hardware, but sadly for some (most?) that means take what you want and never give back anything.…"
42 minutes ago

Developer
John Arne Birkeland commented on Charles Blouin's blog post Transport Canada to investigate ''Roman Candle Attack''
"The sky is falling.."
12 hours ago

Developer
John Arne Birkeland commented on Chris Anderson's blog post AIrDroids (PocketCopter) ceasing operations
"In my book the key to a successful kickstarter is very simple. Do not over-promise and then think/hope you can figure it out once the money is there to throw at it. Just having money can be useless if you don't have the skills needed or worse…"
yesterday

Developer
John Arne Birkeland replied to befinitiv's discussion 3+km HD FPV system using commodity hardware
"I like the idea, but without any two-way communication how do you plan on doing dynamic bandwidth adaption? Dynamic bandwidth is probably one of the core elements to get a robust long distance video link that can cope with variations in signal…"
May 17

Developer
John Arne Birkeland commented on Laser Developer's blog post SF30 LRF - how fast is fast enough for obstacle detection?
"Catching a fast pulse will not be a problem as long as you use a pin change interrupt instead of polling the I/O pin in SW. Even the 16Mhz 8-bit AVR has ns timing accuracy when using a dedicated pin interrupt."
May 11

Developer
John Arne Birkeland commented on Rob's blog post 6S mini copter project
"Nice idea, but high frequency radio signals will be lost the moment you submerge in water, so at the very least you will need a "floater antenna" or something like that."
May 4

Developer
John Arne Birkeland commented on Paul Meier's blog post NASA UAV VTOL successfull forward flight
"I can see the north sea from my kitchen window, so I know all about landing in strong gusty winds. In strong gusts, you get about the same amount of dancing around on a multicopter as with a plane. If that is your criteria, helicopters are the best…"
May 2

Developer
John Arne Birkeland commented on Colugo's blog post A new patent pending VTOL
"Granted, this one has a certain degree of novelty to it. But it still feels like someone having just discovered the wheel and trying to patent all the different ways you can mount it to a frame."
May 2

Developer
John Arne Birkeland commented on Paul Meier's blog post NASA UAV VTOL successfull forward flight
"Only if you let the wind hit at an angle. The nice thing about VTOL is that you can always make sure you are facing the wind, turning the hover into something close to a harrier maneuver."
May 2

Developer
John Arne Birkeland commented on Chris Anderson's blog post Perceptiv Labs image-tracking upgrade for IRIS+ now taking preorders
"The pixhawk 1/2 does not have enough computing power for this, and from a safety viewpoint it's the wrong place for higher order computations. But the new companion computer in the Solo would be a perfect candidate for this type of…"
Apr 26

Developer
John Arne Birkeland commented on ComQuestVentures's blog post Presenting the Vertex Hybrid VTOL Kickstarter Campaign
"Simply because patents have long since stopped serving the original purpose, and has instead become a serious threat to innovation. So what exactly is it that you hope to patent? As I already said, The original ideas for VTOL has been around since…"
Apr 25

Developer
John Arne Birkeland commented on ComQuestVentures's blog post Presenting the Vertex Hybrid VTOL Kickstarter Campaign
"This might come across a bit cross, but the moment I read the dreaded "patent pending" on a kick starter I tend to shy away. And on this one that deals with aerodynamics and ideas and principles that has been pretty much tried and true…"
Apr 25

Developer
John Arne Birkeland commented on Dave Giles's blog post Drone delivering asparagus to Dutch restaurant crashes and bursts into flames
"This bring me back to one of my pet peeves, the mentality with regard to crashes you find among some UAS pilots with little or no R/C background. Any R/C pilot will tell you that it's not a matter of if you are going to crash, but how often.…"
Apr 16

Developer
John Arne Birkeland commented on CrashingDutchman's blog post Turnigy Replikator 3D printer
"Nice timing for this post. Before jumping in heavily and investing, I got a cheap Robo3D kickstarter filament printer as a test. But it never performed to my needs. Sure you can get decent results if you do many test prints and tweak, and sure a…"
Apr 16

Developer
John Arne Birkeland commented on Dave Giles's blog post Drone delivering asparagus to Dutch restaurant crashes and bursts into flames
"Orange FC and carbon tube arms, so most likely a DJI S900 frame with Naza V2 controller."
Apr 15

Developer
John Arne Birkeland commented on Greg Nuspel's blog post New Blackmagic drone camera
"Raw video and global shutter is of course very, very nice to have. But the game changer for our usage will be the 13 stop dynamic range. No more having to choose between crushed blacks or blowing out the sky."
Apr 14

John Arne Birkeland's Blog

Another multicopter crash into a crowd..

Posted on September 17, 2013 at 3:45pm 41 Comments

So it happened again, and it will continue to happen until people realize this technology is far from mature enough to be used for such tasks.

Aside from endangering peoples lives, the public opinion created from such incidents will be very damaging and contribute to overly restrictive UAV laws in…

Continue

Two-Stage Copter

Posted on December 28, 2012 at 7:00pm 10 Comments

This video was just posted by EndOfDays, a well known figure in the photo/video multicopter scene.

And for the record, let me just say that some people have WAY to much free time. :)

ZeroUAV YS-X4 teardown

Posted on December 25, 2012 at 4:30pm 9 Comments

So no completely trusting that Santa had gotten the message, I made sure that there at least was one present under the tree that I would like.

The YS-X4 is the latest multi-rotor autopilot from ZeroUAV, and their entry into the…

Continue

Teensy 3.0

Posted on October 11, 2012 at 2:17am 15 Comments

Just a heads-up that Teensy my favorite small form factor Arduino compatible board, just got a solid upgrade with the…

Continue

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

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

Join DIY Drones

 
 
 

Groups

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

© 2015   Created by Chris Anderson.

Badges  |  Report an Issue  |  Terms of Service