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project:videoglitcharray:start [2019/10/10 20:13] – ctxzproject:videoglitcharray:start [2020/05/22 17:02] (current) – [Demonstrations] ctxz
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 ==== Why VGA ==== ==== Why VGA ====
  
-Quite frankly, the initial reason why I chose to tamper with VGA signals over, say the much more common and within the analog glitch art community preferred composite video signals, is because that is simply what I had available at home. That being said, while VGA certainly has its drawbacks when it comes to glitch art, mostly due to the presence of the horizontal and vertical sync signals, it also comes with a variety of advantages.+Quite frankly, the initial reason why I chose to tamper with VGA signals over, say the much more common and within the analog glitch art community preferred composite video signals, is because that is simply what I had available at home. That being said, while VGA certainly has its drawbacks when it comes to glitch art, mostly due to the rather high frequencies of the color signals, it also comes with a variety of advantages.
  
 While the VGA port has practically gone extinct from host peripherals, it is still very common to find a VGA port on most displays, including many released even at the time of writing. Yet I am not aware of many LCD displays and projectors that support composite video. While HDMI and DVI ports are equally common, if not even more common than VGA at this point (with HDMI becoming more and more of a dominant player), those are digital interfaces and as many could imagine, are more clunky and difficult to work with. Another big advantage that VGA offers over composite is the absence of region specific differences. The VGA signal protocol, although a little hidden from the common user, is well established and standardized by now. Oh, and did I mention that VGA comes with its own 5V supply bus which can be used to power your glitch circuits without an external power source? While the VGA port has practically gone extinct from host peripherals, it is still very common to find a VGA port on most displays, including many released even at the time of writing. Yet I am not aware of many LCD displays and projectors that support composite video. While HDMI and DVI ports are equally common, if not even more common than VGA at this point (with HDMI becoming more and more of a dominant player), those are digital interfaces and as many could imagine, are more clunky and difficult to work with. Another big advantage that VGA offers over composite is the absence of region specific differences. The VGA signal protocol, although a little hidden from the common user, is well established and standardized by now. Oh, and did I mention that VGA comes with its own 5V supply bus which can be used to power your glitch circuits without an external power source?
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 I could explain how VGA signals work, however due to my brutally honest laziness and lack of competence in explaining things, I will leave you with a few resources which in my opinion do a much better job of explaining VGA than me. Many of the resources below explain VGA as part of a guide to create your own VGA driver, so it is not expected, nor required, that everything is understood. I could explain how VGA signals work, however due to my brutally honest laziness and lack of competence in explaining things, I will leave you with a few resources which in my opinion do a much better job of explaining VGA than me. Many of the resources below explain VGA as part of a guide to create your own VGA driver, so it is not expected, nor required, that everything is understood.
  
-- [ (https://www.nandland.com/goboard/vga-introduction-test-patterns.html | Go Board - VGA Introduction ]] by nandland+  * [[ https://www.nandland.com/goboard/vga-introduction-test-patterns.html | Go Board - VGA Introduction ]] by nandland
   * [[http://www.xess.com/blog/vga-the-rest-of-the-story/|VGA - the Rest of the Story]] by Dave Vandenbout   * [[http://www.xess.com/blog/vga-the-rest-of-the-story/|VGA - the Rest of the Story]] by Dave Vandenbout
   * [[http://web.mit.edu/6.111/www/labkit/vga.shtml|VGA Video Output]] by Natahn Ickes   * [[http://web.mit.edu/6.111/www/labkit/vga.shtml|VGA Video Output]] by Natahn Ickes
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 {{:project:videoglitcharray:img_20190831_192239_456.jpg?nolink&600|}} {{:project:videoglitcharray:img_20190831_192239_456.jpg?nolink&600|}}
  
-You can find many more demonstrations on my [[https://www.instagram.com/video.home.systems/|Instagram account for glitch art]] where I also frequently provide updates on this project+You can find many more demonstrations on my [[https://www.instagram.com/vh.systems/|Instagram account for glitch art]] where I also frequently provide updates on this project
  
project/videoglitcharray/start.1570738391.txt.gz · Last modified: 2019/10/10 20:13 by ctxz