CPS2/CPS3 Digital AV Interface - Helper PCB

[Frank_fjs]

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.

 

[dr_myslihiiri]

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]

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]

Whoever makes a run of these, count me in!

 

[Frank_fjs]

Gerber files up.

Altered the kick connector to suit HAS.

@RetroRGB

 

[SmokeMonster]

This is really cool, great work making this!

 

[SmokeMonster]

This also makes it a lot quicker and cleaner to consolize Neo Geos that lack controller ports. Man is this cool.

 

[Frank_fjs]

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]

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]

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

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:

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

 

[Frank_fjs]

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.

 

[RGB]

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]

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]

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:

 

[RetroRGB]

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

JAMMA Connector 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]

• JST VH 6P HEADER
• B6P-VH(LF)(SN)
• STRAIGHT - https://www.digikey.com/product-detail/en/jst-sales-america-inc/B6P-VH-LF-SN/455-1643-ND/926551
• B6PS-VH(LF)(SN)
• ANGLED - https://www.digikey.com/product-detail/en/jst-sales-america-inc/B6PS-VH-LF-SN/455-1652-ND/926559

• JST XH 6 PIN HEADER
• STRAIGHT
• 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
• ANGLED
• S6B-XH-A(LF)(SN)
• https://www.digikey.com/product-detail/en/jst-sales-america-inc/S6B-XH-A-LF-SN/455-2236-ND/1651034

• D-SUB 15 MALE RIGHT ANGLE CONNECTOR
• https://www.digikey.com/product-detail/en/amphenol-icc-fci/D15P33E4PA00LF/609-6495-ND/1537430

• DIPSWITCH 2.54MM PITCH 6 POS
• https://www.digikey.com/product-detail/en/cts-electrocomponents/210-6MS/CT2106MS-ND/2503783

• TACTILE SWITCH RIGHT ANGLE
• https://s.click.aliexpress.com/e/bi6UVRTj

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.

 

[RetroRGB]

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?

 

[RGB]

CPS2's got a brand new face!

 

[Frank_fjs]

That's sexy as @RGB

 

[shorjewken]

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