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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 Chris Anderson's blog post Lily closes down
"Something went wrong with the Register link, so I am re-posting it. http://www.theregister.co.uk/2017/01/13/lily_robotics_faces_lawsuit_for_false_advertising/"
Jan 16

Developer
John Arne Birkeland commented on Chris Anderson's blog post NASA simulates Phantom airflow
"I would think the transition is the problematic part. Normally to make the flip you punch the throttle, then go into neutral pitch while flipping over to avoid driving the copter sideways and into the ground."
Jan 14

Developer
John Arne Birkeland commented on Chris Anderson's blog post Lily closes down
"http://www.theregister.co.uk/2017/01/13/lily_robotics_faces_lawsuit... So this thing pretty much played out like we expected when it was introduced in a blog here 2 years ago. http://diydrones.com/profiles/blogs/introducing-the-lily-camera The…"
Jan 14

Developer
John Arne Birkeland commented on Chris Anderson's blog post NASA simulates Phantom airflow
"Does APM still have the inverted flight mode? In that case it would be an interesting test to hover a heli both ways and see if there was any significant difference. Also, looking at the airflow disturbance in the video there is a lot going on…"
Jan 14

Developer
John Arne Birkeland commented on Chris Anderson's blog post NASA simulates Phantom airflow
"Problem is that when you have something with the efficiency of a flying brick, it does not really help getting minor efficiency improvements."
Jan 13

Developer
John Arne Birkeland commented on Udo Zillmann's blog post Producing Energy with Drones - Wind Drones
"This video showing RC dynamic soaring is a nice practical example of how much energy you can get from wind. https://www.youtube.com/watch?v=r7gL9uA-McY"
Jan 2

Developer
John Arne Birkeland commented on Udo Zillmann's blog post Producing Energy with Drones - Wind Drones
"My understanding is that the higher you go, the more wind potential there is. Found a graph showing the really interesting stuff starting at 2-3km. But then I guess we also get into space elevator territory with regards to tether strength and…"
Dec 30, 2016

Developer
John Arne Birkeland commented on TenzinR's blog post Human Flying Drone
"In my eyes flying in manual only makes it more legit. If you look at the scenarios they are flying with buildings, having adapt to changing situations, under slung payload that change weight depending on how you drag it etc. and on top of that…"
Dec 27, 2016

Developer
John Arne Birkeland commented on TenzinR's blog post Human Flying Drone
"Looking at 1:21 in the 360 video you can see a LED status flashing 3 red blinks. That would indicate a DJI WKM flown in manual mode with <5 satellites reception."
Dec 26, 2016

Developer
John Arne Birkeland commented on TenzinR's blog post Human Flying Drone
"Yeah, it's kinda funny that a viral video has currently more or less bested all of the commercial human lift projects."
Dec 22, 2016

Developer
John Arne Birkeland commented on TenzinR's blog post Human Flying Drone
"Those are some very complex shots to fake. And if so they are the best fakes I have ever seen. Today's batteries and motors makes getting enough lift just a matter of money. The impressive part as Rob mentioned is getting it to fly stable…"
Dec 21, 2016

Developer
John Arne Birkeland commented on Alexandre Mainardi (Nuvem UAV)'s blog post Drone Market Strategies – Partnerships and acquisitions of the dominant players
"Mikrokopter was miles ahead of the competition in the early days. But they never grew and as such was unable to follow the trends, pricing and advance in a timely fashion."
Dec 17, 2016

Developer
John Arne Birkeland commented on Rob_Lefebvre's blog post Procyon 800E Enters Limited Production
"It has been a long road, but this is indeed shaping up very nicely Rob. Congrats."
Dec 17, 2016

Developer
John Arne Birkeland commented on Joe Renteria's blog post Static thrust optimized EDFs
"You can put on better tires and tune up the motor on a Lada as much as you want, but it will never become a real sports car. Same deal with static trust and EDF (ducted small blades and high rpm). If your goal is to use twice the power just to get a…"
Dec 16, 2016

Developer
John Arne Birkeland commented on Joe Renteria's blog post Hover Bike/Bicopter - New multirotor configuration
"You should team up with Colin Furze. https://www.youtube.com/watch?v=soxxPyaAT1k"
Dec 10, 2016

Developer
John Arne Birkeland commented on Ivan Stamatovski's blog post Remotely controlled, fully autonomous aerial system
"I'm always fascinated why people make videos for the tech crowd, and then they don't talk about technology in any detail at all. But at least it's more relevant then the McDonald's deal."
Dec 10, 2016

John Arne Birkeland's Blog

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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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…

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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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