The NEW Build Your Own Arcade Controls

Main => Consoles => Topic started by: opt2not on June 01, 2011, 04:57:25 pm

Title: Jamma Dreamcast
Post by: opt2not on June 01, 2011, 04:57:25 pm

Saw this on the neo-geo forums last night:
http://www.neo-geo.com/forums/showthread.php?225277-Jamma-projects.&p=3204006#post3204006 (http://www.neo-geo.com/forums/showthread.php?225277-Jamma-projects.&p=3204006#post3204006)

Thought it was pretty cool.

Title: Re: Jamma Dreamcast
Post by: PCMedics on August 20, 2011, 05:39:59 pm

Very creatve

Title: Re: Jamma Dreamcast
Post by: HaRuMaN on August 22, 2011, 12:55:04 pm

I can't see the link, but I've started a DC JAMMA project.  Got a fingerboard, hacked a VGA box, and some controllers...  just gotta finish wiring.

Title: Re: Jamma Dreamcast
Post by: opt2not on August 22, 2011, 01:03:10 pm

Here you go:

Quote from: shadows;3203179

Currently stuck between contracts, weather is mostly ---steaming pile of meadow muffin--- and boredom is setting in. So I'd thought I'd finally get around to making my dreamcast, which I only bought for this purpose anyway, jamma compatible.

I still need to add a few things, like a switch to kill the internal controllers, for some light gun action. Also adding video out to the jamma edge, so I can get back my scanlines when in 15khz mode.
It is otherwise done.

Jamma connector, Headphone jack, DB9 kick harness connector and cutout for the memory card.
(http://stevensart.com/Arcade/DCJamma/DCJamma_01.jpg)

VGA connector, 15/31khz switch.
(http://stevensart.com/Arcade/DCJamma/DCJamma_02.jpg)

Guts spilled open.
There's two internal controllers with one slot for a memory card.
All of the components that sit on the top metal panel are going to connectors, strip boards. Making everything very easy to take apart when needed.
(http://stevensart.com/Arcade/DCJamma/DCJamma_03.jpg)

And a look inside the gutted modem shell.
(http://stevensart.com/Arcade/DCJamma/DCJamma_04.jpg)

Next up, is a Genesis. This one is going to be a much quicker project to do.
Using an harness going to the Sega CD extension port, instead of adding a jamma connector to the shell.

Im wondering if he's powering this off the 12v line...I'm assuming so.

I really dig his use of the modem area, maybe this will give you some ideas.

Title: Re: Jamma Dreamcast
Post by: Beaps on February 03, 2017, 06:41:09 pm

Hi

I know this is an old thread but has anyone tried this mod.

I'm a little stuck

Ta
B

Title: Re: Jamma Dreamcast
Post by: ark_ader on February 04, 2017, 03:02:57 am

The original link threw up all kinds of "don't go there" on my AV.  Be careful clicking on the link....

Title: Re: Jamma Dreamcast
Post by: Beaps on February 05, 2017, 01:26:55 pm

Has anyone tried this mod, I am struggling on how to convert 5v to 3.3v, what did you guys use?

Title: Re: Jamma Dreamcast
Post by: Howard_Casto on February 05, 2017, 08:04:46 pm

Well resistors will drop voltage, but depending upon what you need that might not be enough. 

http://www.learningaboutelectronics.com/Articles/How-to-reduce-voltage-with-resistors.php (http://www.learningaboutelectronics.com/Articles/How-to-reduce-voltage-with-resistors.php)

Just remember, you may have to reduce amperage as well. 

I don't have any experience on this particular hack, so I'm Leary about giving any more advice than that.