Table of Contents

Audio and Video Signal Processing – a VGA Hacking Workshop

27. - 28. March 2020

Experimental VGA Processor

Experimental VGA Processor

additional VGA Boards

VGA outputboard for the Raspberry Pi:

http://paperpcb.dernulleffekt.de/doku.php?id=raspberry_boards:raspberry_vga_board

VGA Breakout Board

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 Signal Generator

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


http://dernulleffekt.de/doku.php?id=i2c_over_vga

eater.net - VGA
lucidscience.com - pro VGA Video Generator
blogs.fsfe.org - VGA Signal Generation with the PIC32
javiervalcarce.eu - VGA Video Signal Format
gammon.com.au - Arduino Uno output to VGA monitor
github.com - VGAX Library for Arduino UNO
tinyvga.com - VGA Signal Timing
Homemade VGA Adapter