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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 Carles Gelada's blog post Is Deep Learning the future of UAV vision?
"@Carles, in that case I predict that you have a very bright future at any company of your choosing. I think particularly Google would be interested in your skills."
Sunday

Developer
John Arne Birkeland commented on Gary Mortimer's blog post Its Friday, I'm just going to leave this here
"@Rob.. Yeah... I don't understand how people think something like this is a better solution.. "
Saturday

Developer
John Arne Birkeland commented on Carles Gelada's blog post Is Deep Learning the future of UAV vision?
"State of the art deep learning today aren't even close to solving a problem of this complexity. Even relatively simple tasks like "finding a face in a photo" require enormous amounts of computing to be learned. Having a video…"
Saturday

Developer
John Arne Birkeland commented on Gary Mortimer's blog post Its Friday, I'm just going to leave this here
"Anyone who follows Colin Furze on youtube, knows that it is all about taking some weird/fun concept and turning it into something at least close to real. And the shirt and tie he always wear during testing, is symbolic. Sticking it to the man…"
Saturday

Developer
John Arne Birkeland replied to Oleksii Svyryd's discussion Mapping plane frame
Friday

Developer
John Arne Birkeland commented on Gary Mortimer's blog post Its Friday, I'm just going to leave this here
"As long as Colin wears his safety tie, it will be fine. :)"
Friday

Developer
John Arne Birkeland commented on Marko Thaler's blog post Hybrid FPV racer
"I feel the need to point out that what we are seeing in the video is a skilled RC pilot doing maneuvers in manual (basic stabilization only) mode. Don't get me wrong, this is a something new and a novel approach that deserves credit. But my…"
Thursday

Developer
John Arne Birkeland commented on Randy Sonnicksen's blog post Multi-Rotor Scalability
"There is A LOT going on when you move a copter around. Body mass, momentum, drag, wind resistance. Same for propellers mass, momentum/inertia, efficiency, drag, lift etc. that will also vary depending on rpm. And on top of this you have ESC and…"
Apr 24

Developer
John Arne Birkeland commented on Chris Anderson's blog post Enter the $120,000 Airbus drone delivery challenge
"To me the contest reads more like the technical requirements for a specific product they need for a job. Entire thing is so strictly formulated, that there is no room for innovation. Strange way to go about it."
Apr 22

Developer
John Arne Birkeland replied to Charles Linquist's discussion Intentionally shutting off motors in mid-flight then recovery
"Lowering throttle and tilting so that the copter slides/dives will bring you down much faster, and be in a controlled state. Going straight down will always be problematic since you are flying into your own turbulence."
Apr 22

Developer
John Arne Birkeland commented on Robert Krogh (hooks)'s blog post Diydrones.com website closed in Denmark EU.
"Over the years that DiyD has existed, the ning.com domain has been blocked about 3 times on my ISP in Norway. Not sure what it is that triggers the block, but solved in a couple of days each time after contacting them."
Apr 22

Developer
John Arne Birkeland commented on Attila's blog post Flyboard® Air Test
"1980 - Williams X-Jethttps://www.youtube.com/watch?v=XJARrc40imkhttps://en.wikipedia.org/wiki/Williams_X-Jet"
Apr 21

Developer
John Arne Birkeland commented on Greg's blog post Drone hit British Airways plane approaching Heathrow Airport
"Discussing how much damage a quad would cause is pointless. It has no business ever coming close to an airplane in the first place. So the real problem here are people flying quads in the restricted airspace and even worse the actual take-off and…"
Apr 18
JB commented on John Arne Birkeland's blog post GoPro announces third-party developer program
"Thanks for the update John, but maybe its a little to late. I wished they embedded some half decent ARM processing as well, like they have started with Ambarella S2LM chipsets, where some of the data heavy "app" can run on the device…"
Apr 16

Developer
John Arne Birkeland replied to muavdrones's discussion Current architecture of drone autopilots is wrong , Drone hardware architecture needs to be completely re-engineered.
"There is no free lunch. Parallelism/multi-threading/multiple psychical units are great for tasks that can be split into many smaller independent tasks. But when the next computation is depended on data or results from the previous one, then you just…"
Apr 15

Developer
John Arne Birkeland posted a blog post

GoPro announces third-party developer program

Article from ZDNet.GoPro quietly announced its Developer Program on Tuesday, as it looks to incorporate its action sports cameras…See More
Apr 15

John Arne Birkeland's Blog

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…

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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…

Continue

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

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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