Technical Stuff
This is a collection of more technical work, some of it
runs as demos on the web, some of it is just theory,
other bits are source code or patches to source code that
you have to download youself to play with.
SRPMS Repository
Here are various source packages that I have collected (mostly GPL).
Some work with Fedora, some with CentOS, no guarantees, etc.
Most came from various RedHat archives (including Dag Wieers)
and in many cases I've hacked them around a bit to get them working.
If these are what you need but they don't quite work right on
your system... hey you can always pay me to fix them up!
Software Patents Discourage Innovation
TCPLAG
This is a plug-in module for the linux netfilter, it inspects
TCP streams and makes a note of the typical round-trip time.
Very useful for an internet gateway because you can immediately see
how responsive your network connection is and you can see whether
a problem is limited to one or two sites or whether it is across the board.
gnucap Patches
The gnucap is a circuit simulator released under GPL, I have made
some patches to it and produced a report to explain how
the kneechord
algorithm improves convergence stability
in a resonant RLC circuit containing a saturating (i.e. very nonlinear)
inductor. There is also a patch that allows you to use sox and
gnucap together to test electronic audio filters and really listen
to the results without needing to build the filter.
Multi-User Dungeon
Also known as MUDs, these are games that create a virtual reality
where players can communicate and interact with one another.
Like any game, there's a fun side to it but it is also a simulation
of how groups of people coordinate their activities under various
circumstances.
Answering Machine
A linux based answering machine with messages listed out on an internal web server.
Very handy, very convenient, no more struggling with annoying appliance answering
machines that have a difficult user interface.
Geographic Information Systems
How does PostgreSQL stack up as a
database for spacial data? It has all the datatypes and operators available
natively (which is a good start) but what it really comes down to is
the speed of the R-Tree indexing.
Computer Graphics
These are some graphics demos that I encoded onto MPEG format:
A final comment here, mencoder is easier to use and much faster encoding
but ppmtompeg offers more flexibility, gets better compression and gives a
better looking result. Note that B-frames are not always smaller than P-frames,
especially if there is a lot of movement in the scene.
DVD and Region Locking
Since region locking is not supported by any law in Australia and since
it represents an unfair restraint of trade in violation of various GATT
and TRIPS agreements, I present this handy formula to unlock your
LG-V8824W player and allow you to order DVDs over the internet from any
supplier of your choosing.
With thanks to AlexKKK
For more unlock codes, check out this free site.
Posted on Friday, August 06, 2004 - 07:21 am:
This is for DV 6812P
- Ensure that there is no disc in the player (ie: "no disc" is displayed).
- Press PAUSE
- Enter 314159 immediately without delay
- Enter the region code (0 for region free, or 1-6).
- Press PAUSE
- Turn the player off for a few seconds.
- Turn the player back on
- Here it goes
Not sure whether it works with V8824W
Yes, it does work with the LG-V8824W, very easy to do.
List of Robotics Links
This robotics stuff should move to a page of its own...
More Robotics Links (Kits, Parts and Shops)
- www.acroname.com: robotic parts and kits, wide range, lots of sensors
- www.active-robots.com: robotic kits and hobby electronics
- www.budgetrobotics.com: various minature platforms built from expanded PVC sheet
- www.gumstix.com: embedded microcomputer boards (with Linux!)
- www.hobbyengineering.com: robot platforms, electronics and parts
- www.junun.org: one "sumo style" platform, many add-on bits
- www.lynxmotion.com: range of platforms, arms, walkers, etc
- www.phidgets.com: USB based sensor boards (with open-source Linux drivers)
- www.seattlerobotics.com: robotic kits and parts (including cameras)
- www.zagrosrobotics.com: robotic kits and parts
- www.zworld.com: embedded microprocessor kits
- Robot OZ: shop selling whole robot platforms and bits -- not cheap, but one of the
few places in Australia selling ready-to-roll kits.
- Oatley Electronics: shop selling many unusual electronic bits
(often at exceptionally good prices) including motors, batteries, lasers and UHF transmitter/receiver modules.
- Futurlec -- place to buy passive Infra-Red sensors
- More annoying robots
- Scorpio Technology -- D.I.Y. robots kit (and clocks) for students.
- Active Robots -- online shop with lots of kits and parts.
Electronics Links (Projects)
Historical Stuff
Java Games
Publishing
In simple and direct terms, the Academic publishing industry is at an end and
also at a beginning. There are just so many places to get published for free
and to read papers for free. Anyone signing copyright over to a journal is
a bit of a fool really, because there's no need, and it only makes your paper
more difficult to find.
- Google Scholar Search -- It goes and finds academic papers and
lets you search them. Many of the links go to closed pay-to-view sites but many go to author's homepages,
or university team servers.
- Free Online Research -- Free to view if you submit a paper first.
- Public Library of Science -- Free to view, pay to submit a paper.
Strong in medical and biological research.
- Archive Org -- Searchable books and media, free to access.
- Wikipedia -- Free to view and edit, no original research but does link to many academic works.
No one quite knows what links are considered "reputable", nor what comments might be considered "original" so it tends
to have a mix of standards.
- -- Experiments and discussion of open publishing and education,
also educational computer games.
- Cite Seer -- an arse-kicking search engine for scientific papers:
submit a link to your paper and it scans the paper, keeps a cache copy (in various formats) and extracts the
metadata for search purposes. You keep the paper on your homepage, plus you keep all Copyright etc.
- Academic Publishing Wiki -- Papers published in collaborative wiki style
(with peer review built into the process), published under GFDL.
- Directory of Open Access Journals -- list of many journals providing free to view
online access (not fully searchable).
- Theoretical Economics -- open access journal published under the
Creative Commons Attribution-NonCommercial license with authors retaining Copyright, submission fees apply.
- Electronic Letters on Computer Vision and Image Analysis --
freely available content, including attached example files. Anyone can submit, no mention of submission fees.
- Georgia Computer Sciences and Telecommunications --
with web-page submission system.
Know Any Other Interesting Links?
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