You are here

Planet Linux Australia

Subscribe to Planet Linux Australia feed
Planet Linux Australia - http://planet.linux.org.au
Updated: 1 hour 25 min ago

Linux Users of Victoria (LUV) Announce: LUV Main February 2015 Meeting: CoderDojo / OpenPower and POWER8

Tue 24th Feb 2015 23:02
Start: Feb 3 2015 19:00 End: Feb 3 2015 21:00 Start: Feb 3 2015 19:00 End: Feb 3 2015 21:00 Location: 

The Buzzard Lecture Theatre. Evan Burge Building, Trinity College, Melbourne University Main Campus, Parkville.

Link:  http://luv.asn.au/meetings/map

Speakers:

• Kieran Nolan and Martin Harris: CoderDojo

• Stewart Smith: OpenPower and POWER8

The Buzzard Lecture Theatre, Evan Burge Building, Trinity College Main Campus Parkville Melways Map: 2B C5

Notes: Trinity College's Main Campus is located off Royal Parade. The Evan Burge Building is located near the Tennis Courts. See our Map of Trinity College. Additional maps of Trinity and the surrounding area (including its relation to the city) can be found at http://www.trinity.unimelb.edu.au/about/location/map

Parking can be found along or near Royal Parade, Grattan Street, Swanston Street and College Crescent. Parking within Trinity College is unfortunately only available to staff.

For those coming via Public Transport, the number 19 tram (North Coburg - City) passes by the main entrance of Trinity College (Get off at Morrah St, Stop 12). This tram departs from the Elizabeth Street tram terminus (Flinders Street end) and goes past Melbourne Central Timetables can be found on-line at:

http://www.metlinkmelbourne.com.au/route/view/725

Before and/or after each meeting those who are interested are welcome to join other members for dinner. We are open to suggestions for a good place to eat near our venue. Maria's on Peel Street in North Melbourne is currently the most popular place to eat after meetings.

LUV would like to acknowledge Red Hat for their help in obtaining the Buzzard Lecture Theatre venue and VPAC for hosting.

Linux Users of Victoria Inc. is an incorporated association, registration number A0040056C.

February 3, 2015 - 19:00

read more

Categories: thinktime

Tridge on UAVs: APM:Plane 3.2.3 and 3.3.0beta1 released

Mon 23rd Feb 2015 16:02

The ArduPilot development team has a special treat for fixed wing users today - a double release!

  • A new stable 3.2.3 release with 3 fixes for 3.2.2
  • A new 3.3.0beta1 release with a lot more changes for wider testing

The 3.2.3 release is a minor update to 3.2.2 with 3 fixes:

  • A fixed to relative altitude drift when on the ground before takeoff
  • fixed TKOFF_THR_DELAY to be able to be up to 127 (for 12.7 seconds)
  • fixed INS_PRODUCT_ID (it was being reported as zero)

The most important fix is for the altitude drift, which could cause a poor altitude reference if your GPS altitude drifted while disarmed. The bug showed up as a significant drift in the reported relative altitude on the ground station when the aircraft was disarmed with the EKF enabled. The root cause of the bug was a disconnect between the EKF origin and the planes origin for relative altitudes. It only happened when the GPS altitude varied significantly while disarmed.



Start of 3.3.0 beta releases

The 3.3.0beta1 release has a lot more changes in it. The largest of the changes are internal, such as performance improvements in the NuttX operating system on Pixhawk, but given the size of the changes we want as many test users as possible.

Changes in 3.3.0beta1 include:

  • a new SerialManager library which gives much more flexible management of serial port assignment
  • changed the default FS_LONG_TIMEOUT to 5 seconds
  • raised default IMAX for roll/pitch to 3000
  • lowered default L1 navigation period to 20
  • new BRD_SBUS_OUT parameter to enable SBUS output on Pixhawk
  • large improvements to the internals of PX4Firmware/PX4NuttX for better performance
  • auto-formatting of microSD cards if they can't be mounted on boot (PX4/Pixhawk only)
  • a new PWM based driver for the PulsedLight Lidar to avoid issues with the I2C interface

I'm expecting a lot more changes will go into the 3.3.0 release as we still have a lot of pending pull requests. I will be doing regular beta updates as new patches go in (once they are flight tested).

Happy flying!

Categories: thinktime

Michael Still: Oakey trig

Mon 23rd Feb 2015 16:02
I've got to say, this trig was disappointing. It was a lunch time walk, so a bit rushed, but the trig was just boring. Not particularly far, or particularly steep, or in a particularly interesting area. That said, it wasn't terrible. It just felt generic compared with other trigs I've walked to.



         



Interactive map for this route.



Tags for this post: blog pictures 20150223-oakey_trig photo canberra tuggeranong bushwalk trig_point

Related posts: Big Monks; A walk around Mount Stranger; Forster trig; Two trigs and a first attempt at finding Westlake; Taylor Trig; Urambi Trig



Comment
Categories: thinktime

Sridhar Dhanapalan: Twitter posts: 2015-02-16 to 2015-02-22

Mon 23rd Feb 2015 01:02
Categories: thinktime

Michael Still: Geocaching

Sun 22nd Feb 2015 20:02
I've been trapped at home with either a sick child or a sick me for the last four or five days. I was starting to go a bit stir crazy, so I ducked out for some local geocaching. An enjoyable shortish walk around the nearby nature park.



Interactive map for this route.



Tags for this post: blog canberra tuggeranong bushwalk geocaching

Related posts: Another lunch time walk; Lunchtime geocaching; Big Monks; Confessions of a middle aged orienteering marker; Geocaching in the evening, the second; Geocaching in the evening



Comment
Categories: thinktime

Francois Marier: Error while running "git gc"

Sun 22nd Feb 2015 19:02

If you see errors like these while trying to do garbage collection on a git repository:

$ git gc warning: reflog of 'refs/heads/synced/master' references pruned commits warning: reflog of 'refs/heads/annex/direct/master' references pruned commits warning: reflog of 'refs/heads/git-annex' references pruned commits warning: reflog of 'refs/heads/master' references pruned commits warning: reflog of 'HEAD' references pruned commits error: Could not read a4909371f8d5a38316e140c11a2d127d554373c7 fatal: Failed to traverse parents of commit 334b7d05087ed036c1a3979bc09bcbe9e3897226 error: failed to run repack

then the reflog may be pointing to corrupt entries.

They can be purged by running this:

$ git reflog expire --all --stale-fix

Thanks to Joey Hess for pointing me in the right direction while debugging a git-annex problem.

Categories: thinktime

Clinton Roy: clintonroy

Sun 22nd Feb 2015 16:02

Waking up at two for no discernible reason.

Breakfast with C was a better start to the morning.

Afternoon at The Edge doing conference stuff.



Filed under: diary
Categories: thinktime

Clinton Roy: clintonroy

Sun 22nd Feb 2015 16:02

Coder Dojo down at Sunnybank Hill library. Quite exhausting after a bad night’s sleep!



Filed under: diary
Categories: thinktime

Clinton Roy: clintonroy

Sun 22nd Feb 2015 15:02

Walked to work.

Caught up with a C after work, as a surprise thing rather than a planned thing.



Filed under: diary
Categories: thinktime

Clinton Roy: clintonroy

Sun 22nd Feb 2015 15:02

A bit of a nothing apart from work day.



Filed under: diary
Categories: thinktime

Clinton Roy: clintonroy

Sun 22nd Feb 2015 15:02

Walked to and from work, in an attempt to have a good night sleep tonight..

Tropical Cyclone Marcia has degenerated to a tropical low and is hovering around Brisbane today, making for a lot of rain. I quite like walking in the wet, as long as I’ve got my wet weather gear. Most of the work colleagues are cats and stayed home.

Conference planning later at The Edge.



Filed under: diary
Categories: thinktime

Clinton Roy: clintonroy

Sun 22nd Feb 2015 15:02

Walked to and from work today.

Doing some conference planning later on.



Filed under: diary
Categories: thinktime

Michael Still: Command and Control

Sat 21st Feb 2015 15:02






ISBN: 9780141037912

LibraryThing

I finished this book a while ago and it appears that I forgot to write it up. This book is by the author of Fast Food Nation and it is just as good as his other book. The history of America's nuclear weapons and their security (or lack thereof) is as compelling as it is terrifying. I found this book hard to put down while reading it, and would recommend it to others.



Tags for this post: book eric_schlosser nuclear weapons safety

Related posts: Random linkage; Fast Food Nation; Starfish Prime; Why you should stand away from the car when the cop tells you to; Random fact for the day; More nuclear bunkers Comment Recommend a book
Categories: thinktime

Chris Samuel: Systemd joke

Sat 21st Feb 2015 15:02

Since a few people seemed to like it on Twitter..

.@kartar "How many systemd's does it take to change a lightbulb?" "WHAT? SYSTEMD CHANGES LIGHTBULBS NOW? IS THERE NO END TO THIS INSANITY?"

— Chris Samuel (@chris_bloke) February 19, 2015

This item originally posted here:



Systemd joke

Categories: thinktime

Michael Still: Forster trig

Sat 21st Feb 2015 12:02
Its been too long since I've attempted a trig walk -- 15 days to be exact. That's mostly because I've been really busy at work these last couple of weeks. That said, it was time for another trig, and this one was a bit of an adventure.



Forster Trig is in the Bullen Nature Reserve and is one of the least urban trigs I've attempted so far, which is why this post is a bit more detailed than normal. Big Monks is probably the other trig walk most similar to this one. One of the challenges with this trig is that there is no track to the trig point. Reading John Evan's walk notes from his single assent of this trig, it seems that many people follow the 132kV power lines to the trig, but I consider this "cheating" as the power line is on private land and I didn't want to spend effort on getting permission to walk on someone's farm.



Instead, I followed the Kambah Pool to Cassurina Sands track, and then turned right to bush bash to the trig when I got reasonably close. There wasn't any formed track this way, so I don't think this is a common approach. On the map you'll notice a fence marked -- that's where I had to jump a barbed wire fence, which wasn't the best plan ever. On the way back down from the summit I found a vehicle track, and I'd recommend that others follow that route (the one on the map with two gates marked and some stairs). The stairs are interesting -- a previous walker has mounded stones on both sides of the fence to make it easier to cross.



Either way, its a bush bash up the hill itself, which is covered in reasonably dense spiky vegetation. You're going to want gaiters or long pants.



             



Interactive map for this route.



Tags for this post: blog pictures 20150220-forster_trig photo canberra tuggeranong bushwalk trig_point

Related posts: Big Monks; A walk around Mount Stranger; Two trigs and a first attempt at finding Westlake; Taylor Trig; Urambi Trig; Walk up Tuggeranong Hill



Comment
Categories: thinktime

Michael Still: Confessions of a middle aged orienteering marker

Wed 18th Feb 2015 22:02
I was an orienteering marker for the kid's scout troop tonight -- I guess it could have been a trick, but I think they were genuine. The basic idea was I went and stood at where the mark on the map was, and then noted which kids found me. Nice little hill in MacArthur, with pleasant views. I think I've found a good place for a geocache as well.



Interactive map for this route.



Tags for this post: blog canberra bushwalk tuggeranong

Related posts: Big Monks; Point Hut Cross to Pine Island; A walk around Mount Stranger; Another lunch time walk; Two trigs and a first attempt at finding Westlake; Taylor Trig



Comment
Categories: thinktime

Michael Still: Little Black Mountain

Wed 18th Feb 2015 09:02
I went on a walk on Monday with the Canberra Bushwalking Club up Little Black Mountain. Its a nice area and I mostly enjoyed the walk. I say mostly because the walk leader was quite un-welcoming. There was the lecture about emergency beacons, and then the lecture about how he's never been bitten by a snake. It was quite an odd experience. I think I might avoid that leader in the future.



Interactive map for this route.



Tags for this post: blog canberra bushwalk

Related posts: Big Monks; Cooleman and Arawang Trigs; Point Hut Cross to Pine Island; A walk around Mount Stranger; Another lunch time walk; Two trigs and a first attempt at finding Westlake



Comment
Categories: thinktime

Clinton Roy: clintonroy

Tue 17th Feb 2015 18:02

Bus to work, after discovering that I had no spare clothes at work, somehow. That won’t be a problem for a couple of weeks now.

Horrible nights sleep meant I had to skip the new software engineering meetup.



Filed under: diary
Categories: thinktime

Andrew McDonnell: Protected: Expanding Horizons

Mon 16th Feb 2015 23:02

This content is password protected. To view it please enter your password below:

Password:

Categories: thinktime

Sridhar Dhanapalan: Twitter posts: 2015-02-09 to 2015-02-15

Mon 16th Feb 2015 01:02
Categories: thinktime

Pages