Developer
John Arne Birkeland
  • Male
  • Norway
Share

John Arne Birkeland's Friends

  • Halil
  • Steve
  • Hawkvision
  • Patrick Palensky
  • Tilman Griesel
  • Graham Harding
  • Dieter Gross
  • Solar System Express
  • Demetris Zavorotnitsienko
  • Hamilton From Above
  • Bill James
  • Shyam Balasubramanian
  • Bill Bonney
  • Nick Goodey
  • Dean Wynton

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 replied to Anthony E's discussion image processing for precision landing
"In one word latency. Everything in a traditional autopilot is more or less done after the fact. A sensor picks up data, and then the control reacts and calculates the needed corrections. But it's always at least one step behind. But since the…"
11 hours ago

Developer
John Arne Birkeland replied to Anthony E's discussion image processing for precision landing
"Having accurate tracking does not automatically translate to accurate landings when you are flying in the real world with lots of complex internal and external physic and aerodynamic interactions going on. "
yesterday

Developer
John Arne Birkeland commented on Chris Anderson's blog post DIY Drones at 80,000 members! Reflections on the evolution of DIY robotics and the next big things
"I don't know the timescale for the 'Returning Visitor' graph, but close to 54% seems very good to me for a niche web page like this."
Friday

Developer
John Arne Birkeland commented on Chris Anderson's blog post DIY Drones at 80,000 members! Reflections on the evolution of DIY robotics and the next big things
"DIY doesn't have to be just about the next big thing. Traditionally "Do It Yourself" is about doing something (whatever) just for fun and to learn and feel that you accomplish something in the process. It does not matter if it has…"
Wednesday

Developer
John Arne Birkeland commented on Zubax Robotics's blog post PX4 Sapog - advanced open source ESC from the PX4 team
"20A continuous (100A peak) is more then enough for most applications including heavy lifters. If your need more then 20A continuous per motor (160A total for an octo) just to fly your should seriously look for a more efficient setup. But the 4S…"
Aug 21

Developer
John Arne Birkeland replied to Doug Adduci's discussion Warning! Don't Try This At Home Kids (radio fail safe test disaster)
"More security logic, does not always translate to more security. Sometimes having your equipment just do what you tell it to at all times, can be a nice thing to have... "
Aug 18

Developer
John Arne Birkeland commented on VGR-Systems's blog post Thrust vectoring coaxial Drone Update
"Never mind.. I just found the archive link. They are discontinued, and have a much higher KV (1100KV) then I remembered.. So no good for 15" after all. More like…"
Aug 16

Developer
John Arne Birkeland commented on VGR-Systems's blog post Thrust vectoring coaxial Drone Update
"Seeing this reminds me of an old abandoned project of mine using some larger coaxial low KV motors (up to 15" props) that would be perfect to make your setup more efficient (and also less noisy). Trying to find a link, but I bought them on…"
Aug 16

Developer
John Arne Birkeland commented on elad orbach's blog post Britain invests £800m in Dragonfly drones, quantum gravimeters and combat lasers
"I'll take Rob's impossible battery and raise one gust of wind. Heck, even a mild breeze should be enough to make this a tiny spot on the horizon, never to be seen again.."
Aug 16

Developer
John Arne Birkeland commented on Halil's blog post Tamron Releases An Ultra-Compact Camera Module with Industry-First* Optical Vibration Compensation
"Yeah. Making a servo gimbal from scratch, for small sized block camera like this is less then a days work. It is literally just servos and some L brackets. Only thing missing is analog video output. Micro coaxial LVDS cables and connectors are not…"
Aug 5

Developer
John Arne Birkeland commented on Scott Shawcroft's blog post Introducing Polystack Flight Controllers
"Placing ESC's close to CPU, sensors and signal buses would probably be.. problematic.."
Aug 5

Developer
John Arne Birkeland commented on Chris Anderson's blog post LIDAR on a chip
"The next sensor revolution needed for cheap and robust obstacle detection just got one step closer. Exciting times."
Aug 5

Developer
John Arne Birkeland commented on Enterprise Drone Solutions's blog post Enterprise Drone Solutions announces Théa: the world’s first UAS to meet the high standards for an ​FAA Airworthiness Certificate
"I'll repeat myself. Equipment reliability is not the big problem that needs solving. The main cause of accidents as always, is the human operator. Either directly, or indirectly by putting to much trust in the autopilot (see Tesla for latest…"
Jul 28

Developer
John Arne Birkeland commented on Enterprise Drone Solutions's blog post Enterprise Drone Solutions announces Théa: the world’s first UAS to meet the high standards for an ​FAA Airworthiness Certificate
"Pretty much all 'drone going down in a crowd' videos I have seen, have been caused by the pilot just wanting one more shot and draining the battery. How is 99.99999% anything going to prevent this? It's real simple folks. Do no fly…"
Jul 27

Developer
John Arne Birkeland replied to fabio alberto figueroa benitez's discussion construction of a drone
"Start simple. Make something basic that works, and then build on it. To many projects never get anywhere because they try to include everything from the beginning. Also don't fall in the NIH (Not Invented Here) trap. Highly experienced people…"
Jul 26

Developer
John Arne Birkeland commented on Joe Renteria's blog post "Wing Board" using Pixhawk and GCS...
"I would look into adding some dihedral to the wings."
Jul 24

John Arne Birkeland's Blog

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)…

Continue

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…

Continue

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…

Continue

Just a normal day in the park

Posted on September 4, 2015 at 1:00pm 25 Comments

https://www.youtube.com/watch?v=t5JgnMJzCtQ

I just came across this one.

Disregarding all the usual concerns involved with manned flights of this type etc. I like the technical solution of using many self contained units, each with it's own battery, ESC, motor and propeller. Keeps it…

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

 
 
 

© 2016   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service