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everville.de by Rainer Jenning is licensed under a Creative Commons Attribution 3.0 Unported License.
17Mar2012
Building a Robot: Part 1
Starting a new robot
Recently I was taking the free online class “cs373 Programming A Robotic Car” at udacity and my robotic spirit was rekindled by it.
Posted in projects, robotics
Tagged AVR, BeagleBone, electronics, hardware, microcontroller, project, robot, robotics, Rover 5
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19Feb2011
When powersaving goes too far
Hard drive goes to sleep every few seconds
While setting up Debian 6.0 on my newly build home server I noticed some weird clicking sounds every few seconds from it (it runs very silent otherwise) and could finally pin it down to my brand new Samsung HM160HI hard drive which I use as system disk, parking and then unparking its heads every few seconds.
11Feb2011
Crucial Firmware Update for the Samsung EcoGreen F4 HD204UI 2TB
Under certain circumstances the write buffer may get corrupted if the drive uses the 1AQ10001 firmware. Luckily I read that before writing anything important on my new storage drive … seems like on a AHCI enabled SATA controller a certain command can accidentally clear the write buffer.
06Feb2011
Debian 6.0 “Squeeze” released
Debian 6.0 “Squeeze” released
After 24 months of constant development, the Debian Project is proud to present its new stable version 6.0 (code name “Squeeze”). Debian 6.0 is a free operating system, coming for the first time in two flavours. Alongside Debian GNU/Linux, Debian GNU/kFreeBSD is introduced with this version as a “technology preview”.
23Nov2010
Disabling the Sidebar on all Single Posts for the Twenty Ten Theme
Disabling the Sidebar
Although I value the sidebar as a great navigation tool I think the space is more useful to display the actual post. So this little adjustment keeps the sidebar visible on the front page, archives, pages, searches etc. but removes it while viewing single posts. Like always these adjustments should be made to a child theme.
21Nov2010
Enabling Post Thumbnails in the Twenty Ten Theme
Post Thumbnails
Post thumbnails are special images attached to posts and for example can be displayed next to an excerpt if a theme has support for them.
Even though they are called thumbnails, they can actually be of whatever size you choose them to be. The Twenty Ten theme uses them to change the header image if a post thumbnail of the correct size is attached as featured image.
15Nov2010
Adjusting the Automated Excerpt Length
The Excerpt
An excerpt is a post summary which is either automatically extracted or can be entered by hand. If an automated excerpt is used it takes a certain amount of words from the post as it’s excerpt.
Twenty Ten uses post excerpts of 40 words as short summaries displayed when linking to a post from the front page, search results and archives.
13Nov2010
WordPress Shortcodes
Shortcodes
A shortcode is a WordPress-specific code that lets you do nifty things with very little effort.
An example would be the [archives] shortcode which gets replaced with an archive view when the page is shown. Shortcodes can also have parameters like
[archives type=monthly limit=12 showcount=true] and even enclose content [sourcecode] some code [/sourcecode] inside of them.
11Nov2010
WordPress Child Themes
WordPress Themes
A WordPress Theme controls which, where and how the information on your site is displayed. By changing your theme you can change the look and the presentation of your whole WordPress site.
If you want to make design adjustments to your site and not just switch between predefined themes you would need to alter the theme files itself, which is a bad idea.
