The supergun diagrams project!

'ere ya go:
http://chadsarcade.co.uk/oldsite/Supergun/supergunIndex.htm
http://cps2shock.retrogames.com/jamma.html
http://www.sgrepository.com/modules/newbb/

 

I found these pages of GameSX very usefull when building mine.

Arcade Primer
JAMMA Harness
Cheap Home JAMMA

These pages arent exactly a supergun DIY schematic, but they explain very well how an arcade machine and JAMMA harness works, and they helped me alot.

My supergun is very similar to the one shown on the 3rd link, except mine has some improvements and is even cheaper!!

For the power I used an old 386 AT power supply, for the audio/video part I used a RGB SCART lead(yes, I live in europe and I have a SCART tv).
I also used DB15 Neogeo controller ports but with a slight modification.
The Neogeo controller port has a few unused pins, so I wired the coin, test and service buttons to these pins. The ports remain Neogeo compatible and I can use these extra 'buttons' on my custom made pads.

The parts I used:
Old AT power supply
JAMMA harness came from some old broken arcade cabinet
the AT connector came from a broken 486DX cooing fan
the SCART cable used was a bit of leftover cable I had laying around
the SCART connect I had laying around also, from a previous project
the DB15 female ports came from old 386 Serial/IDE ISA cards
the DB15 male ports I had to buy, 0.50€
the cables I used for my custom pads were leftover printer cables
the pads I used were broken Megadrive 6 button pad and 2 broken PSX pads

To sum it up, my supergun cost me 0.50€ :-D
Even if you dont have all the parts laying around like I did, it still isnt very expensive one of these superguns.
The most expensive parts would be the JAMMA harness and the cabling, and the SVIDEO encoder if you dont have a SCART TV.

 

Glad my little pages were helpful for you, Codeman. There are new updated versions available on nfg Games:

Arcade Primer
Jamma at Home
JAMMA Harness

The cheap home Jamma hasn't been changed:

Cheap Home JAMMA

Lawrence.

 

There are many good pages out there. Chad's arcade is very good, and of course Lawrence's diagrams are always excellent.

It really is very simple though. Get a JAMMA pinout and just wire to that! Simple! All you're going to need, being in the US assembler, is a RGB to S-Video circuit.

 

If any of you guys are planning on building a SuperGun, and you need plastic/metal casings for the SG or any joysticks you're building try Maplin or RS Components. Thay have loads of casings, nice professional looking jobbies in plastic and/or aluminium.

http://www.maplin.co.uk/
www.rswww.com (select 'electrical' from left menu and then 'enclosures')

Stumbled across these whilst looking for a nice new casing for the Xbox - damn thing doesn't like the Freeview box, too much of a squeeze and it gets too hot.

 

Damn, they're both expensive. I think after shipping to the US, a decent case could be $60.

 

...or just use the proper mounting feet available for 4 for £1 or £2 i forget which (still sounded expensive for what they were!)

www.coin.demon.co.uk

 

I forgot to mention about the 'casing' part of my supergun.

I didnt really care if it was pretty, I just wanted it functional(and cheap :-D )!

I had an old 'vcr rack', a custom made wooden rack with 3 shelves for my vcr's and sattelite receiver.

I put my NeogeoMVS on the top shelf, with the power supply on the side and the controller ports screwed on the wood, and on the middle shelf I put my Moonwalker PCB.

I have seen people using plastic VHS boxes for these projects.

BTW if anyone cares HERE is a pic of one of my hacked neogeo compatible playstation pads!

 

Gimme it instead, I'll mail you a Famiclone for butcher.

 

Well at least now the 3DO will have the power they promised it would have :smt023

 

Has anyone at any point stumbled across pinouts for connecting Saturn controllers to a Supergun setup? I know there'd be some extra work involved in getting the extra 2 face buttons to work (if you're planning on playing Capcom games), but I was mainly thinking how I don't have any Neo Geo controllers, and a Saturn controller would be the most fun for arcade games...

 

Using a SS pad will be a lot of work since it will have to be decoded. You might want to cut the traces on the PCB and directly wire up a DB15 to the actual button pads.

 

What about using the Saturn gameports that came with the Diamond Multimedia Edge graphics accelerator/soundcard? Would it be possible to just splice the leads going from the gameport board to the accelerator? And why would a Neo-Geo controller not need any sort of decoding - is it something to do with the Neo being pretty much home arcade hardware, thus using the same Jamma signals?

The only reason I'm not too keen on cutting the traces on the PCB is A) I don't want to wreck my only Saturn pad, and B) My soldering skills suck, I truely do not have surgeon's hands...

 

The data from the controllers would likely still be encoded coming from the ports, going to the board.

The Neo-Geo's controllers are simply switches wired straight to a DB-15 plug. That's why you don't need decoding, because they weren't encoded to start with.

 

I use it play my supergun with my MVS-1A :smt023
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