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Welcome to Eric Hartwell's InfoDabble

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About Eric Hartwell: I'm a software/systems developer based in Waterloo Ontario, but at home anywhere with a decent IP connection. Contact me.

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Apollo 17:
The Blue Marble
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I'm pleased to say that this site is now running on MediaWiki. Here's why, and how.
Space shuttle Endeavour
Space shuttle Endeavour
The Free Spirit bumper stickers and T shirts are turning up in all kinds of interesting places.

Meanwhile, the rover team is still running further tests using a test rover in the sandbox at JPL. No specific date has been set for Spirit to try and get out of its sand trap.

Opportunity rover
Opportunity rover
The Mars rover Spirit has been stuck in loose Martian soil since April. Show your support for the Rovers and the Rover team members with Free Spirit themed T-shirts, hats, and all kinds of other stuff - now including bumper stickers!

I've been really busy at new job doing amazing things with mobile and desktop computing. More soon...

The calendar family keeps growing, with new Shuttle and Saturn calendars. All of the older Saturn, Shuttle, Spaceflight, X-15, Mars, and Robots calendars have been reprinted with dates for 2009. And don't forget the wall clocks and mugs.
I needed to turn an old PC into a cheap, dedicated, browser appliance. The cleanest choice is a Linux/Firefox boot-from-CD; the hardware demands are minimal, and it's impossible for users to make any permanent changes. After a little research, I decided to go with SLAX, a small and beautiful Linux operating system which fits on and runs directly from a CD-ROM disc. With the addition of Firefox 2, a Firefox kiosk mode extension module, and a little fiddling with xinitrc, I was able to create a small, clean kiosk boot CD that works on practically any PC without changing the hard disk at all.
The DynamicSkin MediaWiki extension allows the skin layout and content to be defined using normal wikitext articles instead of PHP script files, and to be modified dynamically depending. Menus, styles, navigation can change depending on the contents of the page being rendered. i've published the extension on MediaWiki.org and a description of the InfoDabble skin which shows how a derived class is used to further customize the skin for this site.

I've also published the BreadCrumbs2 extension which generates "breadcrumbs" to help users navigate around the wiki, highlights the active navigation link and/or tab, and optionally changes the site logo based on page categories.

As part of its web application framework, Google provides the Google Data APIs, a set of web services for read/write access to google applications. Even better, the Zend Google Data Client provides a PHP 5 component to execute queries and commands against the Google Data APIs. And that's all you need. Unless you're using GoDaddy as a cheap host. You get what you pay for ... With low cost comes great hoop-jumping responsibility.
The EmailForm MediaWiki extension is used to create email response forms. Both the input form and the results, which are defined on the same wiki page, can be fully formatted using standard wikitext. The extension has been published to MediaWiki.org and is used for the Contact me form on my web site.
poweredby_mediawiki_88x31.png I'm pleased to say that my web site, InfoDabble, is now (mostly) running on the MediaWiki platform. Here's why, and how.
I like to think of GoDaddy as the McBurgers of hosting and domains - they're huge, they're everywhere, they're relatively cheap, and they're utterly consistent. Just don't ask for anything that's not on the menu. Fortunately, MediaWiki fits with just a little trim...

Contact me