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weired_signal_processing_gdansk2019 [2019/12/14 01:03]
admin [VGA Signal Generator]
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-===== 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.\\ 
- 
-The fact that most signals used to connect devices via wires are based on electric current allows for easy hacking. For example one can manipulate the VGA video signal flow with coils and magnetic fields. The signal being similar to sound signals makes for an easy transfer to sound and vice versa. One can make a video signal hearable and display an audio signal on a monitor.\\ 
- 
-<​html>​ 
-<iframe width="​560"​ height="​315"​ src="​https://​www.youtube.com/​embed/​RprQFZy3ZUs?​rel=0&​amp;​showinfo=0"​ frameborder="​0"​ allowfullscreen></​iframe>​ 
-</​html>​ 
- 
-In the workshop we will process VGA signals. We learn the basic about the VGA standart and how to manipulate, mix and sonificate the signal, how to amplifier, invert and add fast video signals. Every participant will build a VGA breakout board that allows easy access to the signal.\\ 
- 
----- 
-==== Experimental VGA Processor === 
- 
-[[https://​paperpcb.dernulleffekt.de/​doku.php?​id=vga_synthesizer:​experimental_vga_processor|Experimental VGA Processor]]\\ 
-{{:​experimental_vga_processor.jpg?​600|}}\\ 
- 
----- 
-==== additional VGA Boards ==== 
-**VGA outputboard for the Raspberry Pi:**\\ 
-{{:​vga_hacking_piksel2018:​vga-666_board_pi_190334.jpg?​400|}}\\ 
-[[http://​paperpcb.dernulleffekt.de/​doku.php?​id=raspberry_boards:​raspberry_vga_board]]\\ 
- 
-**VGA Breakout Board**\\ 
-{{:​vga_hacking_piksel2018:​vga_breakout_board.jpg?​400|}}\\ 
-[[http://​paperpcb.dernulleffekt.de/​doku.php?​id=vga_synthesizer:​vga_breakout_board]]\\ 
- 
----- 
-==== Fake a VGA device ==== 
- 
-**Color Signal ------ 75R ------ GND**\\ 
- 
-[[http://​www.geeks3d.com/​20091230/​vga-hack-how-to-make-a-vga-dummy-plug/​]]\\ 
- 
----- 
-==== Audio to VGA ==== 
-[[http://​crackedraytube.com/​pdfs/​hacking_a_vga_monitor.pdf]]\\ 
-{{:​vga_hacking_piksel2018:​vga2arcade.gif?​400|}}\\ 
- 
----- 
-==== 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).\\ 
- 
-**Connection**\\ 
-H-Sync -- 68 Ohm -- Pin 03\\ 
-V-Sync -- 68 Ohm -- Pin 10\\ 
-R -- 470 Ohm -- Pin 04\\ 
-G -- 470 Ohm -- Pin 05\\ 
-B -- 470 Ohm -- Pin 06\\ 
- 
----- 
-==== Inverting the Signal ==== 
-[[https://​www.electronics-tutorials.ws/​opamp/​opamp_2.html]]\\ 
- 
----- 
-==== I2C over VGA ==== 
-{{:​vga_hacking_piksel2018:​vga_to_i2c.jpg?​400|}}\\ 
-[[http://​dernulleffekt.de/​doku.php?​id=i2c_over_vga]]\\ 
- 
----- 
-==== Links ==== 
-[[https://​eater.net/​vga|eater.net - VGA]]\\ 
-[[http://​lucidscience.com/​pro-vga%20video%20generator-1.aspx|lucidscience.com - pro VGA Video Generator]]\\ 
-[[http://​blogs.fsfe.org/​pboddie/?​p=1712|blogs.fsfe.org - VGA Signal Generation with the PIC32]]\\ 
-[[http://​www.javiervalcarce.eu/​html/​vga-signal-format-timming-specs-en.html|javiervalcarce.eu - VGA Video Signal Format]]\\ 
-[[http://​www.gammon.com.au/​forum/?​id=11608|gammon.com.au - Arduino Uno output to VGA monitor]]\\ 
-[[https://​github.com/​smaffer/​vgax|github.com - VGAX Library for Arduino UNO]]\\ 
-[[http://​tinyvga.com/​vga-timing|tinyvga.com - VGA Signal Timing]]\\ 
-[[https://​people.ece.cornell.edu/​land/​courses/​ece4760/​FinalProjects/​s2012/​raf225_dah322/​raf225_dah322/​|Homemade VGA Adapter]]\\ 
- 
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