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John Arne Birkeland's Discussions (327)

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Discussions Replied To (325) Replies Latest Activity

"You should calculate lift at ~50% throttle. In other words the copter and payload sh…"

John Arne Birkeland replied 21 hours ago to How do you calculate quadcopter lifting capability?

 15 21 hours ago
Reply by John Arne Birkeland

"Helis are definitively better at handling wind. But there are some tradeoffs. Helico…"

John Arne Birkeland replied 21 hours ago to Large Heli versus Large Multirotor - Which is Best in wind?

 3 21 hours ago
Reply by John Arne Birkeland

"Any board manufactured from 5. march 2013 or later should have the latest ArduPPM v.…"

John Arne Birkeland replied on Tuesday to ATmega32u2 firmware detect ?

 2 yesterday
Reply by Richard

"Autopilots can be complex beasts, and their nature has many tasks running in paralle…"

John Arne Birkeland replied on Monday to MCU vs RTOS

 3 on Monday
Reply by John Arne Birkeland

"The LIPO Regulator from JP is 5A, while the dlux ubec is 10A. But other then that th…"

John Arne Birkeland replied May 10 to 14.8v (4s lipo) voltage divide to 7.4v (2s lipo)

 8 May 10
Reply by David M. Zakharia

"We need absolute confirmation that the unwanted RTL activation does NOT happen when…"

John Arne Birkeland replied May 10 to NEVER connect a Capacitor backup or voltage protector on APM board

 69 on Sunday
Reply by Bill Bonney

"You want one of these instead: http://www.hobbyking.com/hobbyking/store/__24753__Tur…"

John Arne Birkeland replied May 10 to 14.8v (4s lipo) voltage divide to 7.4v (2s lipo)

 8 May 10
Reply by David M. Zakharia

"Hi Hugues. 1. rule of R/C and Robotics: Turning your remote control off is the last…"

John Arne Birkeland replied May 9 to NEVER connect a Capacitor backup or voltage protector on APM board

 69 on Sunday
Reply by Bill Bonney

"From a AP point of view (phun intended..), APM has not been all there yet, compared…"

John Arne Birkeland replied Apr 26 to Arducopter versus Mikrokopter

 5 7 hours ago
Reply by Darrell Burkey

"It has built in AV output, and is a much better stills photo camera then the GoPro.…"

John Arne Birkeland replied Apr 18 to Ditch the GoPro, it's the Canon SD1400is !

 37 May 8
Reply by Tim Green

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Top Content 

1 Mapping Mission Ride Along

Mapping Mission Ride Along
2 APM 2.5 from hobbyking

APM 2.5 from hobbyking
3 Alt_hold and loiter acting crazy

Alt_hold and loiter acting crazy
4 Looking for best laptop screen to see in the sun

Looking for best laptop screen to see in the sun
5 ArduPlane 2.73 released

ArduPlane 2.73 released
6 Mechanical Hands From A MakerBot: The Magic Of Robohand (From Makerbot blog news)

Mechanical Hands From A MakerBot: The Magic Of Robohand (From Makerbot blog news)
7 3 axis Camera Gimble connections.

3 axis Camera Gimble connections.
8 New micro-cameras emulate insects' compound eyes

New micro-cameras emulate insects' compound eyes
9 APM Copter 2.9.1.b has been released

APM Copter 2.9.1.b has been released
10 Thirty Days (#17): 12-rotor close up

Thirty Days (#17): 12-rotor close up

Contests

Season Two of the Trust Time Trial (T3) Contest has now begun. The fourth round is an accuracy round for multicopters, which requires contestants to fly a cube. The deadline is April 14th.

A list of all T3 contests is here. 

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