Betsu Betsu is an Open Source Audio+Video splitter, which can be hooked up to cabinets jamma harness to produce output suitable for Streaming/Capture through OSSC + a capture card.
The schematic, board and gerbers are open source (Github here), so you are free to build it yourself, but I’m also planning to make some of these and sell them for about $70 + shipping if there's interest.
The current prototype board looks like this. The final board will be pretty much the same, but with different trim-pots (cross slot) and a few minor adjustments. Soldering will also looks a bit nicer, since I'll probably do heat gun reflow instead of just hand soldering.
High level features:
More detailed features:
Board: https://i.imgur.com/C43zLZX.png
BOM: https://docs.google.com/spreadsheets/d/1b9EG2nF_7fvYWe0XPSzKwB71s6kuO3IKsdXIHNT_xPA/edit?usp=sharing
Sample captures:
Both of these are Betsu Betsu into OSSC with 4x linedoubling, then captured with USB3HDCAP in OBS, and scaled to 1080p. Audio is wired from Betsu Betsu to PC Line in directly.
Action shot of prototype board being used to capture Demon Front above.
I was previously tracking this in this idea thread, as I was constructing it, but since this is pretty final now, and no longer just an idea, moving it here.
Let me know if this seems interesting, and if there's any feedback!
The schematic, board and gerbers are open source (Github here), so you are free to build it yourself, but I’m also planning to make some of these and sell them for about $70 + shipping if there's interest.
The current prototype board looks like this. The final board will be pretty much the same, but with different trim-pots (cross slot) and a few minor adjustments. Soldering will also looks a bit nicer, since I'll probably do heat gun reflow instead of just hand soldering.
High level features:
- Power, video and audio input through terminal block. Easy to wire up to cabinet Jamma harness, or a jamma adapter.
- “Standard” Mini DIN 8 video pinout, for hooking it up to OSSC.
- Mono audio output through audio jack.
- Adjustable RGB video levels.
More detailed features:
- Line level audio conversion with galvanic isolation (TY-250P).
- Buffering and unbiasing of Video and Sync signals to safe levels (THS7374). Input is AC-coupled, output is DC-coupled. Safe to drive 75ohm loads / OSSC.
- Audio completely isolated from video (no common ground) to avoid ground loop noise.
- Very small footprint (65x40mm).
- 2.5mm mounting holes
- Power LED
Board: https://i.imgur.com/C43zLZX.png
BOM: https://docs.google.com/spreadsheets/d/1b9EG2nF_7fvYWe0XPSzKwB71s6kuO3IKsdXIHNT_xPA/edit?usp=sharing
Sample captures:
Both of these are Betsu Betsu into OSSC with 4x linedoubling, then captured with USB3HDCAP in OBS, and scaled to 1080p. Audio is wired from Betsu Betsu to PC Line in directly.
- Demon Front: https://www.youtube.com/watch?v=K3Xw-lAzCXM
- Blazing Star: https://www.youtube.com/watch?v=uihHkYRbM4E
Action shot of prototype board being used to capture Demon Front above.
I was previously tracking this in this idea thread, as I was constructing it, but since this is pretty final now, and no longer just an idea, moving it here.
Let me know if this seems interesting, and if there's any feedback!