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weired_signal_processing_gdansk2019 [2019/12/12 01:02]
admin created 		weired_signal_processing_gdansk2019 [2019/12/14 01:03]
admin [VGA Signal Generator]
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 ===== Weird Signal Processing – a VGA Hacking Workshop ===== ===== Weird Signal Processing – a VGA Hacking Workshop =====
 +as part of the [[https://goingapp.pl/evt/2185374/avx-audio-video-experyment|AVX – Audio Video Experiment]] by [[http://www.fundacja-x.org|Fundacja-X]] at\\ 
 +[[http://www.kolonia-artystow.pl/|Kolonia Artystów]] in Gdansk\\
 +13. - 14. December 2019\\
  
 Nam June Paik is known for manipulating a TV set with a magnet. One might think that after we abandoned monitor tubes the combination of TV and magnetism is gone as well. But similar techniques are still possible today by manipulating the monitor signal.\\ Nam June Paik is known for manipulating a TV set with a magnet. One might think that after we abandoned monitor tubes the combination of TV and magnetism is gone as well. But similar techniques are still possible today by manipulating the monitor signal.\\
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 ==== VGA Signal Generator ==== ==== VGA Signal Generator ====
 [[https://www.ebay.de/itm/New-VGA-Signal-Generator-LCD-Tester-15-Signal-Output-USB-Battery-Power-Supply-/162727211414?hash=item25e34c3196|VGA Signal Generator]]\\ [[https://www.ebay.de/itm/New-VGA-Signal-Generator-LCD-Tester-15-Signal-Output-USB-Battery-Power-Supply-/162727211414?hash=item25e34c3196|VGA Signal Generator]]\\
 +
 +=== VGAX Library for Arduino UNO ===
 +[[https://github.com/smaffer/vgax]]\\
 HSYNC and VSYNC signals are squared pulses of +5V, and the RGB signals take values in a continuous analog voltage range from +0V (absolutely dark) to +0.7V (maximum brightness).\\ HSYNC and VSYNC signals are squared pulses of +5V, and the RGB signals take values in a continuous analog voltage range from +0V (absolutely dark) to +0.7V (maximum brightness).\\
  
-=== Connection ===+**Connection**\\
 H-Sync -- 68 Ohm -- Pin 03\\ H-Sync -- 68 Ohm -- Pin 03\\
 V-Sync -- 68 Ohm -- Pin 10\\ V-Sync -- 68 Ohm -- Pin 10\\
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 G -- 470 Ohm -- Pin 05\\ G -- 470 Ohm -- Pin 05\\
 B -- 470 Ohm -- Pin 06\\ B -- 470 Ohm -- Pin 06\\
 +
 +----
 +==== Inverting the Signal ====
 +[[https://www.electronics-tutorials.ws/opamp/opamp_2.html]]\\
  
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