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John Arne Birkeland
  • Male
  • Norway
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John Arne Birkeland's Friends

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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 replied to Noah Dalton's discussion Drone Clearing Snow off Solar Panels
"nano coating.."
yesterday

Developer
John Arne Birkeland commented on Chris Anderson's blog post Sony's VTOL drone first flights
"I agree with Gary. If the main purpose of this design is for surveying, then it's total overkill. VTOL is cool as **** from a technical standpoint, but has a lot of caveats when put into practice. In my opinion there is way to much focus in the…"
yesterday

Developer
John Arne Birkeland commented on Aaron Chadd's blog post First in the line.
"Nice design. The H frame in it's elegant simplicity and robustness is probably my favorite quad variation."
Thursday

Developer
John Arne Birkeland commented on Chris Anderson's blog post Sony's VTOL drone first flights
"This type of design has been made and flown in various shapes since the mid 90's. What has changed since then, and I guess what makes it practical now is that the extensive pilot skills required to be able to fly such a thing, have been…"
Tuesday

Developer
John Arne Birkeland commented on Brendan Jacobs's blog post Like It or Not, Drone Licensing Is Coming
"The hobby was doing fine, and has been doing so for 40+ years. That is until suddenly a lot of people with zero experience thought it was perfectly fine to fly wherever and whenever they wanted."
Aug 22

Developer
John Arne Birkeland commented on Beatriz's blog post Ground Control Stations - Studying a redesign
"And btw. Doing a offsite questionnaire defeats the purpose of this site, which is to gather and make relevant information like this publicly available for all."
Aug 22

Developer
John Arne Birkeland commented on Beatriz's blog post Ground Control Stations - Studying a redesign
"The key to any good UI is intention and information flow. Establish the intention of the UI, and STICK to it. Perhaps the most common design fault is then the UI designers lose track of the purpose and destroy usability just for the sake of making…"
Aug 22

Developer
John Arne Birkeland commented on BirdsEyeView Aerobotics's blog post NAFPV 2015 - Badges? We Don't Need No Stinkin' Badges.
"To be fair, this post at least covers a topic of interest and is FAR from the worst product plug I have seen posted on DIYD."
Aug 18

Developer
John Arne Birkeland commented on Todd Harper's blog post Installing a Feiyu Tech MINI 3D gimbal on the 3DR SOLO Part 1 of 2
"Speaking of Solo and the Feiyu gimbal, here is a neat video. https://www.youtube.com/watch?v=9Jmr7Sbs1Hg"
Aug 10

Developer
John Arne Birkeland commented on Jeevan Kalanithi's blog post More gimbal news
"Yes. Combining the battery and the gimbal, is the only realistic way to add mass to the camera without adding weight to the copter."
Aug 3

Developer
John Arne Birkeland commented on Jeevan Kalanithi's blog post More gimbal news
"P3 still has vibration induced rolling shutter jello in the video, during difficult conditions. I.e. bright sunlight and ascent/descent or fast forward flight maneuvers that cause strain on the propellers."
Aug 3

Developer
John Arne Birkeland commented on Jeevan Kalanithi's blog post More gimbal news
"A part of the problem is that for some reason with the latest generation (P3 and Solo), suddenly people expect perfect results from a 450 class hobby grade copter. But, consistent perfect results might not even be physically possible because of the…"
Aug 3

Developer
John Arne Birkeland commented on Ryan McIntosh's blog post Amazon proposes drones-only airspace to facilitate high-speed delivery
"They will need some robust auto avoidance system for sure.  At less then 400ft it is pretty much guaranteed they will have 'unsanctioned' company at regular intervals."
Jul 30

Developer
John Arne Birkeland replied to Pmarche's discussion Pixhawk and some ESCs with Low KV motors. Pixhawk is not the problem. Problem is related to ESCs, Firmware and fine tuning. in the group PIXHAWK
"Sounds like ECS battery voltage soft-cut protection, but a dedicated multi rotor ESC should not even have that option."
Jul 29

Developer
John Arne Birkeland commented on Andrew Rabbitt's blog post Exploring the secrets of flying wing design with CFD.
"Well written and informative. And I have to agree with Gary."
Jul 29

Developer
John Arne Birkeland replied to Pmarche's discussion The Truth about Pixhawk and some ESCs with Low KV motors in the group PIXHAWK
"It's just a matter of correct controller timing. I fly large 120kv motors spinning 28" propellers on 12S without any problems. But without correct timing the motor would be screaming like a pig every time you throttled aggressively. "
Jul 25

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

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