klandrith / gbs-c_aio

Build files for the GBS-C AIO - The GBS-C AIO is an open source add-on board for the GBS 8200 running the Gbscontrol custom open source firmware by Rama and others.

GBS-C AIO

Build files for the GBS-C AIO

The GBS-C AIO is an open source add-on board for the GBS8200 running the GBScontrol custom open source firmware by Rama and others.

The GBS-C AIO key features are:

• Very low lag, less than 1 frame.

• High quality upscaling for nearly all retro game systems and computers - anything pre 2000s

• Fast resolution switching between 240p and 480i video signals - output to the display never drops sync

• Motion Adaptive deinterlacer that engages automatically and is superior to most BOB deinterlacing and BOB deinterlacing is available should you want it

• Easy to navigate interface via web browser

• Color reproduction with auto gain and auto offset for the triple 8 bit @ 160MHz ADC

• Zero Lag bypass capability for transcoding video

• Simplified power management compared to other DYI GBS-C set ups

• Acrylic and PCB style case options

• Inputs: SCART(RGBS), Component (YPbPr), VGA(RGBHV)

• Outputs: VGA/YPbPr 1280x960, 1280x1024, 1280x720,1920x1080, 720x480/768x576 and Source Pass-through.HDMI 720P/1080P. only one VGA or HDMI output at a time on the GBS8200

• Fast downscaling at 240P via VGA/YPbPr

• Built in Sync Strike that can be turned on and off

A basic BOM, Gerbers (PCB plates and AIO Board), KiCad source files and acrylic plate files are included in this repository.

The recommended additions and modifications to the GBS8200 Scaler are:

1. Remove the pots
2. Clock mod - https://github.com/ramapcsx2/gbs-control/wiki/Si5351-Clock-Generator-install-notes use SDA and SCL pads on the AIO board for easy installation.
3. Replace c47 with a 22uf cap to compensate for the increased power draw from the clock mod.
4. Add a a resistor value in parallel with r26 to correct the ypbpr output brightness.
5. Replace the 150 ohm resistor on r26 if it is outside of 1% tolerance.

This project uses the GBScontrol firmware by Rama - https://github.com/ramapcsx2/gbs-control

Support the GBScontrol project and buy Rama a coffee - https://www.buymeacoffee.com/ramapcsx2

AIO board design by Jacob Proctor (Arithmaldor) - https://twitter.com/Arithmaldor

GBS-C AIO Public Facebook Group - https://www.facebook.com/groups/gbscaio

PLEASE NOTE: The Bill of Materials is still a WIP project and may be missing a few components, this will be updated soon.