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John Arne Birkeland
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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 New Beaglebone Blue board designed for robotics
"The problem with all most all ARM boards I know of, is that the GPU and dedicated video HW parts are still black boxed with abysmal or even nonexistent software support. And using the CPU part only for computer vision / computer learning etc. is a…"
Friday

Developer
John Arne Birkeland commented on Jerry Giant's blog post After 3 years of not making money on drones, I quit
"It's still early days for drones, we are still figuring out what works and what doesn't. So reason says it's also to early to expect a big payout. And up until now the entire industry for some reason has been fixated on the quad…"
Mar 15

Developer
John Arne Birkeland commented on Dustin Franklin's blog post NVIDIA Jetson TX2 Delivers Twice the Intelligence to the Edge
"I get that the Jetson hardware is expensive for a hobbyist, but the way I see it they are not really made for that marked after all. I don't think aiming for your typical DIY price segment could justify the development cost of something like…"
Mar 10

Developer
John Arne Birkeland commented on Colin Snow's blog post Why the Drone Network of Tomorrow is Farther Away than You Think
"Ideas are easy, reality is hard."
Mar 5

Developer
John Arne Birkeland replied to Brandon Ellison's discussion Intrinsically Safe Helicopter Drones
"A drone with intrinsically safe levels of power/mass etc. will either be unable to fly, or unusable for anything practical."
Feb 28

Developer
John Arne Birkeland commented on Chris Anderson's blog post Land-o-Lakes ag drone challenge with $150,000 prize
Feb 18

Developer
John Arne Birkeland commented on Chris Anderson's blog post Land-o-Lakes ag drone challenge with $150,000 prize
"Originally I though this was just yet another scheme to get research and project development on the 'cheap'. But this single line changed this into something doable for both parts."
Feb 18

Developer
John Arne Birkeland replied to Nicholas Witham's discussion Why are we starting to use companion computers? in the group Companion Computer Working Group
"Don't try to do everything at once. Get the drone up and flying on a regular Pixhawk. This should keep you busy for many months, getting to know the system doing missions etc. Then and only then should you start looking at taking the next step…"
Feb 15

Developer
John Arne Birkeland commented on Chris Anderson's blog post Microsoft releases AirSim, an Unreal-based simulator for Pixhawk
"The requirements are to be expected when you considering it's a visual emulator for training computer vision,where you need realistic graphics to get algorithms that will work in the real world."
Feb 15

Developer
John Arne Birkeland commented on elad orbach's blog post A MICRO RC PLANE BUILDER SHARES HIS TRICKS
"Very impressive that he got a scale fighter plane of that size to fly at all, since aerodynamics does not scale linearly at all. In the video he mentions that the plane is flying what would be mach 3 at full size, so no wonder he needed active…"
Feb 14

Developer
John Arne Birkeland commented on Andreas Antener's blog post Full PX4 Support for E-flite Convergence
"I imagine the quicker response and accurate control from the autopilot would mitigate much of the need for throttle pulsing. At least on small overpowered planes. But moving to larger and heavier planes there would have to be some kind of dampening…"
Feb 14

Developer
John Arne Birkeland commented on earthpatrol's blog post Was it Live or was it Memorex?
"I think it was more about showing that you are on the forefront using the latest in buzzword technology, then actually entertainment value for the viewers. And if you look at news headlines it seem to have worked very well.."
Feb 8

Developer
John Arne Birkeland commented on Zergtim's blog post Autonomous Take-off and Landing on a Moving Carrier
"Impressive. Having the vision system built into the landing platform makes a lot of sense."
Feb 6

Developer
John Arne Birkeland replied to Ethan's discussion Should I use PX4 flight control stack or the APM 3.3 for Pixhawk?
"APM has as far as I know been refactored at least two times since the beginning. So not much 'kind of evolved' left there I am afraid."
Jan 28

Developer
John Arne Birkeland commented on Nate Sinisgalli's blog post Drone Mistakes, Mishaps and Misfortunes: We Always Break our Toys
"If you can't afford to crash it, don't fly it."
Jan 23

Developer
John Arne Birkeland commented on Ofer Eldad's blog post Flight Envelope Protection System with Pixhawk and Odroid
"So basically, you are aiming to emulate an skilled pilot that trough experience instinctively knows what maneuvers a plane can and can't do. And then add it to the Autopilot. Nice work."
Jan 18

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…

Continue

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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