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Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

Personal Projects

Lepl parser for Python.

Colorless Green.

Photography around Santiago.

SVG experiment.

Professional Portfolio

Calibration of seismometers.

Data access via web services.

Cache rewrite.

Extending OpenSSH.

Last 100 entries

Santiago 30m Bike Route; Mapa de Ciclovias en Santiago; How Unreliable is UDP?; SE Santiago 20m Bike Route; Cameron's Rap; Configuring libxml with Eclipse; Reducing Combinatorial Complexity With Occam - AI; Sentidos Comunes (Chilean Online Magazine); Hilary Mantel: The Assassination of Margaret Thatcher - August 6th 1983; NSA Interceptng Gmail During Delivery; General IIR Filters; What's happening with Scala?; Interesting (But Largely Illegible) Typeface; Retiring Essentialism; Poorest in UK, Poorest in N Europe; I Want To Be A Redneck!; Reverse Racism; The Lost Art Of Nomography; IBM Data Center (Photo); Interesting Account Of Gamma Hack; The Most Interesting Audiophile In The World; How did the first world war actually end?; Ky - Restaurant Santiago; The Black Dork Lives!; The UN Requires Unaninmous Decisions; LPIR - Steganography in Practice; How I Am 6; Clear Explanation of Verizon / Level 3 / Netflix; Teenage Girls; Formalising NSA Attacks; Switching Brakes (Tektro Hydraulic); Naim NAP 100 (Power Amp); AKG 550 First Impressions; Facebook manipulates emotions (no really); Map Reduce "No Longer Used" At Google; Removing RAID metadata; New Bike (Good Bike Shop, Santiago Chile); Removing APE Tags in Linux; Compiling Python 3.0 With GCC 4.8; Maven is Amazing; Generating Docs from a GitHub Wiki; Modular Shelves; Bash Best Practices; Good Emergency Gasfiter (Santiago, Chile); Readings in Recent Architecture; Roger Casement; Integrated Information Theory (Or Not); Possibly undefined macro AC_ENABLE_SHARED; Update on Charges; Sunburst Visualisation; Spectral Embeddings (Distances -> Coordinates); Introduction to Causality; Filtering To Help Colour-Blindness; ASUS 1015E-DS02 Too; Ready Player One; Writing Clear, Fast Julia Code; List of LatAm Novels; Running (for women); Building a Jenkins Plugin and a Jar (for Command Line use); Headphone Test Recordings; Causal Consistency; The Quest for Randomness; Chat Wars; Real-life Financial Co Without ACID Database...; Flexible Muscle-Based Locomotion for Bipedal Creatures; SQL Performance Explained; The Little Manual of API Design; Multiple Word Sizes; CRC - Next Steps; FizzBuzz; Update on CRCs; Decent Links / Discussion Community; Automated Reasoning About LLVM Optimizations and Undefined Behavior; A Painless Guide To CRC Error Detection Algorithms; Tests in Julia; Dave Eggers: what's so funny about peace, love and Starship?; Cello - High Level C Programming; autoreconf needs tar; Will Self Goes To Heathrow; Top 5 BioInformatics Papers; Vasovagal Response; Good Food in Vina; Chilean Drug Criminals Use Subsitution Cipher; Adrenaline; Stiglitz on the Impact of Technology; Why Not; How I Am 5; Lenovo X240 OpenSuse 13.1; NSA and GCHQ - Psychological Trolls; Finite Fields in Julia (Defining Your Own Number Type); Julian Assange; Starting Qemu on OpenSuse; Noisy GAs/TMs; Venezuela; Reinstalling GRUB with EFI; Instructions For Disabling KDE Indexing; Evolving Speakers; Changing Salt Size in Simple Crypt 3.0.0; Logarithmic Map (Moved); More Info; Words Found in Voynich Manuscript

© 2006-2013 Andrew Cooke (site) / post authors (content).

Brother HL-2070N on Linux

From: "andrew cooke" <andrew@...>

Date: Fri, 3 Aug 2007 21:54:27 -0400 (CLT)

We just bought a laser printer - Brother HL-2070N.  It's fairly compact,
nice looking, monochrome, network printer and it was very easy to
configure for both Linux (Suse) and Mac (OS X).

I connected it via ethernet, turned it on, and it requested an address via
DHCP.  I checked what address was assigned and pointed a browser at the
address - it contains a web server that lets you do all the configuration.

So I gave it a fixed IP address (not sure this was necessary - the Mac at
least can use rendezvous) (and then changed the browser to the new
address!).

Brother has rpms available on its web site.  You need both the standard
lpr and the "CUPS wrapper" (cupswrapperHL2070N-2.0.1-1.i386.rpm 
brhl2070nlpr-2.0.1-1.i386.rpm).  I downloaded those and installed them
with rpm --install.  At that point I saw a strange error about pstops not
found so I used Yast to install psutils.

Then I pointed my web browser at http://localhost:631 and the printer was
there, registered.  The Brother site mentioned copying a file for AMD64
but it wasn't necessary - it just worked.

By default the config is for USB.  I changed the settings via CUPS to be
at the address I had configure earlier (ie http://10.2.0.4/ipp - the ipp I
took from the examples on the CUPS page).

A test page printed fine (and the toner save mode looks plenty good enough
so I enabled that).

On the Mac we installed a driver from the provided CD and then added a
printer through the normal admin interface.  It did some kind of
autodiscovery and worked fine too.

The only downside is that the supplied toner is a "Starter Cartridge" with
about half the capacity of a normal cartridge.  It didn't say that
anywhere on the box, or on the website from the shop we bought it from.

Andrew

Problems with OSX (Apple Mac)

From: "andrew cooke" <andrew@...>

Date: Thu, 1 Jan 2009 22:42:00 -0300 (CLST)

Printing from the latest OSX, the printer would not respond (it stayed
asleep, with some poking CUPS could be provoked into giving an
uninformative error).  A comment on Amazon suggested a DNS lookup issue,
but that seemed to be windows-related, and the problem persisted even when
I supplied a name via DNS.

I eventually solved the problem by configuring the printer (when first
added) to use the LPD daemon rather than CUPS.

Andrew

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