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Frank_fjs

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https://www.videogameperfection.com/2018/11/28/digital-interface-hardware/

This is a jamma pass-through board I was asked to design to aid in connectivity of the Capcom digital AV interface.

It provides power and controller inputs to your CPS2/CPS3 board while the AV interface will handle video and audio.
  • JST VH connector for power, connection to arcade PSU.
  • JST XH connector for the kick harness.
  • Dipswitch to enable/disable buttons 4,5,6 from the jamma edge.
  • Test and service tactile switches.
  • Two Neo-Geo controller connectors with Undamned pinout.
PCB DETAILS
  • 2 layer PCB
  • 135mm x 45mm
  • M3 mounting holes offset 4mm from the edge of PCB
CURRENT REVISION: 1.6
  • Silkscreen tweaks.
  • Fixed JST-VH header.
  • Improved tactile switch footprint.
  • Better power copper.
AV-V1.1.png
 

Attachments

  • AV-1.1.zip
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dr_myslihiiri

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Nice work! Will you be offering these for sale or making the design files public? This would be a much more elegant and portable solution when using the digital AV interface than a supergun.
 

Frank_fjs

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Ah I was supposed to upload the Gerber files in the original post, must have forgotten!

Yes will be releasing the files publicly. :)

I won't be selling them myself.
 

yuro

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Whoever makes a run of these, count me in!
 

Frank_fjs

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Well I squeezed in an order of 5 x PCBs with my last PCB order, so I'll have a working unit in hand in about 3 weeks.
 

yuro

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Dibs on one of them if you decide to sell!

Hopefully you’ll start a loyalty club from all the things I buy from you. :)
 

RGB

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I hope you don't consider this a shameless plug. I designed something similar, I guess others might find it useful, too:

39657599723_69091956e8_z.jpg


The PCB is quite tiny at 140x31mm, uses a 24pin ATX connector and/or a 6pin JST VH connector for power, 6pin JST XH connector for kicks - the connectors are compatible with the HAS harnesses. It also allows to disable button 4 for both players via a switch (buttons 5 and 6 aren't connected to the JAMMA connector); extra 2pin connector and two buttons for volume UP/DOWN, because these are often broken on the CPS2 mobos, and the CPS2 digital AV interface uses them.

It plugs in vertically, like the RECO V2:

14228711337_2485429c0d_z.jpg


The only drawback is that the DB15 ports are upside down - it's a trade-off for the small PCB size and "via-less" design.

It will be very easy to add 3/4 player support to this PCB, and I can consider that if there's enough interest.


Link to the OSHPark project - https://oshpark.com/shared_projects/SCOwyKsK
 
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Frank_fjs

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That looks great @RGB!

Why ATX? I was under the impression that you disliked ATX power for arcade boards?

The vertical approach is a great idea, reminds me of a CPS1.5 filter board. Neat design, I like it. :)
 
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RGB

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Thanks!
Why ATX? I was under the impression that you disliked ATX power for arcade boards?
True, but this PCB is for more casual setups, e.g. people who will only ever use a CPS2, and don't need a real arcade PSU and a full blown supergun.
 

Uplinkpro

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This also makes it a lot quicker and cleaner to consolize Neo Geos that lack controller ports. Man is this cool.
This is exactly what I was thinking, Im just about to make a cmvs, the only think i was going to do differently was pass-through all the pins on the db15 connectors to the pads on the back for easier wiring power and dips etc are not really needed.
 

Frank_fjs

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New version up.

Made an error and misread the JST-VH datasheet, made the holes too small.

Everything corrected now, a few improvments made.

Quick mock-up to give an idea of how it looks:

51454214_10216498779675043_5762771411630292992_n.jpg
 

RetroRGB

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Can you post the BOM too please? Here's what I have so far:

JAMMA Connector:kiss: https://ebay.to/2SaJOzb
Power Connector (B6P-VH(LF)(SN)): https://www.digikey.com/product-detail/en/jst-sales-america-inc/B6P-VH(LF)(SN)/455-1643-ND/926551
Kick Harness Connector (B6B-XH-A(LF)(SN)): https://www.digikey.com/product-detail/en/jst-sales-america-inc/B6B-XH-A(LF)(SN)/455-2271-ND/1000381
Top-Facing Controller Port** (LD15P24A4GV00LF): https://www.digikey.com/product-detail/en/amphenol-icc-fci/LD15P24A4GV00LF/609-5194-ND/4997298

*I think that JAMMA connector is the right one. It lined up perfect, but I had to slightly bend the pins in before soldering.
**For this design, I think front-facing controller ports are better. Figured I'd post anyway since I had the link handy.

So, we'd still need links to the buttons, dip switch and front-facing ports.
 

Frank_fjs

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Jamma edges linked to on eBay are fine. Pins need manipulation to solder on, that's normal, they're not intended to be soldered to a PCB but it works fine anyhow.

I'd recommend using the angled VH and XH JST connectors.
 
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RetroRGB

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Thanks very much! I think the angled are probably best.

The switches are a great price, but that 19-39 day delivery time is killer. I searched and can't find any 4.5 x 4.5, 3-pin microswitches in the US. Anyone have any sources, or should I just stop being impatient and wait?
 

shorjewken

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Seems like this is great to be used in conjunction with CPSHDMI, butiIs there anyway to easily get RGB passthru?
 
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