ScanGenie VGA Scanline Generator [Completed]January 15, 2017
The ScanGenie is a RGB scanline generator is a nice and simple little project for anyone looking to relive the CRT days. Personally I believe this simple design is the best scan line generator for your classic videogame consoles for generating lcd scanlines! It is lagless, runs perfect with no external power, and gives crisp results on 240p and 480p signals.
The power runs off 5V from Pin-9 of VGA. If your source does not provide 5V on Pin-9, which commonly is the case, you can also power it using sync with no problems as the setup time of the logic chips is extremely minimal.
The board design is very simple utilizing just two chips by Texas Instruments, the SN74LS74 & SN74LS125.
You may also select odd/even lines and line width if you’re really attentive to minor details.
This board utilizes the following components which can be ordered from Digikey or Mouser.
|1||SN74LS74||Flip Flop D-Type Pos-Edge 2-Element 14-Pin PDIP Tube|
|1||SN74LS125||Buffer/Line Driver 4-CH Non-Inverting 3-ST Bipolar 14-Pin PDIP Tube|
|1||LTST-C171TBKT||LED BLUE CLEAR CHIP SMD|
|1||RNCP0805FTD1K00||RES 1K OHM 1% 1/4W 0805|
|3||952-2882-ND||JUMPER SKT OPEN TOP BLUE|
|2||1734530-3||TE Connectivity AMP Connectors 5749768-1 (FEMALE)|
Download an image of the schematic and the source files below:
Schematic and PCB are done in Diptrace, I highly suggest anyone give it a try over KiCad.
- Link: full size schematic image
- GitHub: Download .sch and .dip files