Developer
John Arne Birkeland
  • Male
  • Norway
Share Twitter

John Arne Birkeland's Friends

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

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 thomas Butler's blog post Are you still "puffing" LiPos?
"Simply put, always follow the battery C rating, and don't pull more then 80% total capacity out of the battery. Usually this means charging in the 1-5C range and 20-50C discharge depending on battery brand."
21 hours ago

Developer
John Arne Birkeland commented on FlightBots.com's blog post FlightBots Interview with Award-Winning Aerial Photographer Brent Foster
"+1000 for this guy. This is a textbook example of how to learn to fly. Expensive equipment and relying on auto magic, does not in any way translate to crash proof. Learning to fly (and crash) on small and cheap copters will save you a lot of money,…"
22 hours ago

Developer
John Arne Birkeland commented on Tilman Griesel's blog post OpenFPV Update 1 - Modular telemetry with JS and HTML5 (VIDEO)
"@Stephen, then you have been incredibly lucky. I'm my experience (and that of most FPV'ers), mixing radio and video on 2.4ghz works on the bench, but has severely reduced range. The biggest challenges are getting enough separation on the…"
yesterday

Developer
John Arne Birkeland commented on Rui Costa's blog post New Professional Multirotor Airframes
"CF rust is a myth. I don't know who started it, but it's kinda ridiculous when you consider what CF is made of (epoxy and carbon threads)."
Jul 8

Developer
John Arne Birkeland commented on Chris Anderson's blog post ESA does another copter-rover drop, this time with awesomely over-the-top music
"@Hugues: The high ratio of political blogs is only natural in the current climate. There are some key issues being argued at this very moment, that will have a huge impact on how every RC/FPV/UAS pilot out there may or may not operate. But I agree…"
Jul 7

Developer
John Arne Birkeland commented on Jonathan Hair's blog post Hobbyking releases HKPilot 2.7
"The APM 2.x boards won't suddenly stop working. They will continue doing what they have been doing for as long as you like then to. So if you already have the features and performance you need, there is nothing to worry about. The only…"
Jul 6

Developer
John Arne Birkeland commented on Alex Wong's blog post DJI Phantom flies through fireworks and over crowd. Brave or Foolish?
"Not really much to discuss here in my opinion. Flying over/trough fireworks looks like great fun and totally acceptable. You are not risking anything but your copter. It's what under the copter while flying that matters. The canonical rule is…"
Jul 1

Developer
John Arne Birkeland commented on Chris Anderson's blog post AMA response blasts FAA
"@Gary, that list highlights the problem very well. This is not about making the air safe for the "little man", but large corporations protecting their assets."
Jun 25

Developer
John Arne Birkeland replied to Rob_Lefebvre's discussion Warning about Helicopter Power Supply!
"@OlliW. Apples and oranges. A traditional RC setup is a much simpler beast then a full blown autopilot with a multitude of sensors. And even so it's considered best practice to separate receiver and servos on larger RC setups. Simply because…"
Jun 24

Developer
John Arne Birkeland commented on Chris Anderson's blog post DIY Drones teams dominate Sparkfun Autonomous Vehicle Competition
"Randy, at least you now have real video to test new tracking algorithms against. Next year for sure."
Jun 23

Developer
John Arne Birkeland commented on Chris Anderson's blog post Drones now banned in all US National Parks
"As long as you are not using automated navigation via GPS way-points, but instead flying LOS then you are operating a model aircraft. But good luck explaining the subtle difference to a park ranger or bystander who has been programmed by media to…"
Jun 20

Developer
John Arne Birkeland commented on Roger Sollenberger's blog post The Tale of BeaglePilot: The world’s first Linux-based autopilot
"@Jesse: The challenge with Linux (and other traditional OS's) when used for autopilot tasks, is not in finding small and lightweight hardware. The smartphone has solved that for us, making small ARM based Linux computers dime a dozen. The main…"
Jun 5

Developer
John Arne Birkeland commented on Andy Jensen's blog post 3DR International Shipping Update
"@Badman, uhuhu.. Please not the S2, we don't want Apple as an enemy also.. :)"
Jun 3

Developer
John Arne Birkeland commented on Matthew - Swift Radioplanes's blog post Introducing the Lynx
"Great stuff.. Have you experimented with prop hanging during the deep stall? Something akin to the harrier maneuver? http://www.youtube.com/watch?v=NaGV3B-o6os Doing this it is possible to greatly reduce the decent speed even on normal (non 3D)…"
May 28
Crashpilot1000 commented on John Arne Birkeland's blog post Another multicopter crash into a crowd..
"@Shawn: Yep, obeying own safety rules http://copter.ardupilot.com/wiki/safety-multicopter/ seems not to be their subject. The best part of that wiki is still "A large towel is your most important piece of safety equipment followed by a fire…"
May 25
Shawn Thorvilson commented on John Arne Birkeland's blog post Another multicopter crash into a crowd..
"It's OK now. 3dr now endorses this apparently. Just look at their makers faire video."
May 24

John Arne Birkeland's Blog

Another multicopter crash into a crowd..

Posted on September 17, 2013 at 3:45pm 42 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

Parallella: A Supercomputer For Everyone (Kickstarter)

Posted on September 29, 2012 at 10:50am 11 Comments

I just want to give a shout about a Kickstarter project that I think deserve some…

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

 
 
 

© 2014   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service