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Table of Contents
Raspberry Pi VGA-Board
A VGA 666 Hut for the Raspberry PI. It provides a VGA output over the GPIOs It's build wiht a resistor ladder - 6 resistors for each colour. And that's why it will use so many pins: GPIO Pins 2-21.
The design of the adapter is based on Raspberry-Pi VGA Adapter of G.J. van Loo, it needs the same software like the original adapter:
https://github.com/fenlogic/vga666.git
Schematic
Paper-PCB
Parts
Resistors:
- 2x 120 Ohm
- 3x 500 Ohm
- 3x 1kOhm
- 3x 2 kOhm
- 3x 4 kOhm
- 3x 8 kOhm
- 3x 16 kOhm
Mechanical:
- VGA connector
- 1x connector 2x20pin
Installation
https://github.com/fenlogic/vga666/tree/master/documents
$ sudo apt-get update
download https://github.com/fenlogic/vga666/archive/master.zip
unpack
copy dt-blob-dpi.bin to /boot/dt-blob.bin
In:
$ sudo nano /boot/config.txt
add this:
enable_dpi_lcd=1
display_default_lcd=1
To change resolution to 1080p60\\
dpi_group=2
dpi_mode=82
and to 1024×768 60Hz
dpi_group=2
dpi_mode=16
more video-modes for DMT and CEA on:
https://www.raspberrypi.org/documentation/configuration/config-txt.md