Differences

This shows you the differences between two versions of the page.

--- hardware:vga_edid_injector [2018/09/08 10:00] – [Snapshoting Display EDID information] andi
+++ hardware:vga_edid_injector [2026/07/26 22:17] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-= VGA EDID Injector
+# VGA EDID Injector
 {{:hardware:vga_edid_injector_v0.1_annotated_710px.jpg?500|}}
@@ Line 13: / Line 13: @@
 The VGA EDID Injector provides relief for this kind of situation: It allows to take a snapshot of a display's EDID information and "carry" it to the computer in need.
-== Hardware
+## Hardware
 The VGA EDID Injector has 3 connectors (see image):
@@ Line 22: / Line 22: @@
-== Usage
+## Usage
-=== Snapshoting Display EDID information
+### Snapshoting Display EDID information
 To snapshot the EDID connection you have to insert the injector in reverse direction. This typically requires you to use the VGA gender changer (orange mesh bag) and the VGA cable (blue mesh bag).
 * Connect the display to the left side, female VGA connector.
 * Plug the right side, male VGA connector into a computer
@@ Line 34: / Line 33: @@
 Using the display control tools refresh/identify connected displays. Repeat this until the attached display is recognized.
 The VGA EDID Injector can now be spliced into the computer side of a video signal only (i.e. no DDC signals) connection.
-=== Replaying snapshoted EDID information
-Simply insert the VGA EDID Injector into the video signal connection close to the computer.
+### Replaying snapshoted EDID information
+Insert the VGA EDID Injector into the video signal connection close to the computer, as pictured above.
 **Important Notice:** There must be no DDC signals present on the display side of the connection. Otherwise the VGA EDID Injector will try to attempt to snapshot the information found there and, if successful, will overwrite the previously snapshoted EDID information.
@@ Line 41: / Line 42: @@
 In that case it is recommended to prepare a special VGA cable in which the signal carried over the pins 12 and 15 is severed (simply removing the pins from one of the connectors with some side cutters and/or pliers will do the trick).
-=== Micro-USB connector
+### Micro-USB connector
 An upcoming firmware release will provide a command line interface over USB CDC ACM serial device emulation. Until then the Micro-USB connector serves for supplying auxiliary power (+5V). Under normal circumstances the VGA connection will provide +5V, 50mA(max) over pin 9. However long cable lengths or a "weak" system's power supply (think laptops) may prevent the supply to meet the demands.