Bacteria's project: "Project Unity"

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bacteria
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Re: Bacteria's project: Alpha Omega

Post by bacteria »

To let you guys know, the break from this project is because I need to complete an N64 commission for a guy on my forum, which will finish this week, also do a SNES portable for him, a generic one for sale, and i'll be starting a unique handheld portable for myself; when these are done (or certainly the first 3 of these 4) i'll be back to this Alpha Omega project.

Making nice progress on the N64 portable, as per this thread, which is into its 8th page so far: http://moddedbybacteria.freeforums.org/ ... 77-60.html

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Anyway, decided to get NeoGeo into the Alpha Omega, so bought an MVS board, the MV-1A which uses 3 amps for the 5v line and 1 amp for 12v, against an MV-1F board that uses 7 amps at 5v and 1 amp at 12v; which is too much for my bank of regulators to work with. Also, got my 3rd NeoGeo title, Metal Slug. So, after doing Saturn, DreamCast, will be onto NeoGeo!
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Re: Bacteria's project: Alpha Omega

Post by AppleQueso »

if you're going to put in an MVS, why not a CPS-2 or something as well?
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Re: Bacteria's project: Alpha Omega

Post by bacteria »

That's an extra Jamma board, i'll be struggling to get a NeoGeo into the system as it is!
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Bacteria's project: "Project Unity" (formally: Alpha Omega)

Post by bacteria »

Right, this project has been on hold whilst I was doing commissions; i've turned away some commissions for a while as I wanted to get back to this project, and do it justice.

Tying together some posts on my forum's thread to bring this up to date:

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Originally, I chose "Alpha Omega", the beginning and the end; as I thought i'd covered all the console systems from Atari 2600>PS2 in the system. It was also because after making that system, i'd have no other modding projects left (of any substance) of interest.

Well, actually discovered of course there are about a dozen other console systems not covered, obscure systems like the Commodore 64 cart system, Eye, 3DO, Pippin and a few other systems - all failed and not great systems, and also very expensive now. That means my system is more a cost of "more than half all systems from end of the 1970's to mid 2000's! One of the reasons I perseveared with the tempremental CD32 in my system before was I wanted "complete"; and put in CD-i although only wanted one game on it.

The reality is I have the Alpha Omega Jnr (or whatever I end up calling it) to follow, and that is liable to be as far as my modding will go (that system and this one).

Therefore, I was thinking about a name change for the system, as the old name and its reasons are not as relevant as was.

I decided to change the name of the project to "Unity" as the central point of this project is to have 17 or so original console systems work with each other, and one controller for all; ie working in unity... So, "Project Unity" is the new name for the project.

Removed the CD-i as decided one game for the system was pushing it a bit, and the CD32 was removed because the laser was failing/other issues, and unreliable. Down to 16 console systems, plus plug'n'plays too (17 slots in total).


Put the PS2 section back in, need to wire it back in (at the back), screwed it into its final place on the base. Used a piece of wood as guide so I can get the front straight. The gadget to the left of the PS2 is something I got from a car boot sale, bought about 6 for £4, they are exhaust fans, 12v, from recording studio desks (you know, the large mixing desks), so this is quiet and also pumps out quite a bit of air. I was intending originally to have a large fan at the back of the case bringing air in, however this is better - i'll close the backing, air vents at the top and the air exhaust at the bottom, that will give airflow through the case. I'll also make sure when mounting the console sections, that there is airflow around the console boards.

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The gap between the PS2 and the exhaust fan, i'm thinking of using that for the GBA game cart, not sure yet, i'll see how it goes.

As i'm making a new drive unit tray for the GameCube and other systems, probably just rip apart a new GameCube when get to that part of the system, probably easier to start that part again than salvage from what I did before.

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Anyway, my old Sega Saturn seems to work! Had power supply (only kettle lead) and one controller, however couldn't find video cable so had to open up the Saturn to get the board out to solder composite and ground to the connections before could turn system on for the first time!

Interestingly, the Saturn can do RGB, S-video and composite - handy.

Anyway, had a black Saturn (ie UK model), here's the boards with the covers removed:

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Drive unit has a small port connector, a large ribbon connector and the motherboard a similar ribbon to connect to the controllers. The mains power transformer seems to say it wants 3.3v, 5v and 9v; although i'll play with that.

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After wiring the video line, tested the system, bare. Seemed to work fine; set system date, etc and pressed the lever so it thinks the drive door is closed, reset; worked first time.

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First time i've used a Saturn, ever, let alone opened one up; quite interesting.

Not many games on the Saturn i'm interested in, but am interested in Dark Savior and Bugs! so I bought them on ebay in the hope the console worked (if not, i'd buy another). I've got Spot goes to Hollywood (cost £1 at car boot sale), Doom (cost 50p at car boot sale) and a couple of other titles, will look out for other good Saturn games worth getting; not interested in the usual fighter or driving games, which are the other ones you get at car boot sales easily.

I'll post details in the reference section on the Saturn when have more to add.
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Re: Bacteria's project: "Project Unity" (formally: Alpha Ome

Post by bacteria »

Ok, this is something not done before.

It is much better as we all know when you have front loading drive units, and certainly better in the Unity project than having pull-out drawer sections if possible.

So, i'm making my own version from scratch.

Opened up an old CD computer drive unit for the motor that opens and closes the drive door, and the track. I can't use the drive unit itself as the motor is always in the center of the front of the drive so gets in the way. Superglued the relevant cog to the motor (before it used a rubber band "O" ring to friction drive this cog):

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Here's the drive unit:

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Using the CD box from a Playstation 1 game.....

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...and cut out a pretty tight fit in the insert from the Playstation CD holder part, looks COol too!

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Now of course it's a case of making the surround, with as less friction as reasonably can so the motor works to insert and remove the drive unit from the Unity case; and make it look pretty.
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Re: Bacteria's project: "Project Unity" (formally: Alpha Ome

Post by bacteria »

One issue with that thought is the weight of the drive against the runners, might stop the drive unit working. Another consideration is keeping the drive unit "closed", will have to use magnets for that otherwise the drive unit will probably pop out a little.

There are two things I need to extend on the ports; there is a 5 wire cable; added about 12" with a PS2 cable; tested unit and works fine. Other cable to extend is the harder one, ribbon cable, can extend the connections easily, issue is if it will work with extra distance; the solder points are easy enough though, although there's about 40 wires to connect or thereabouts.
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Re: Bacteria's project: "Project Unity" (formally: Alpha Ome

Post by bacteria »

Made an illustration for the audio and video port for the Saturn:

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Re: Bacteria's project: "Project Unity" (formally: Alpha Ome

Post by bacteria »

Relocated the cables from the ribbon cable to far longer wires, used about 11" wiring, so the drive unit has enough space to move back and forward from the main case.

System works fine, however the wires are too rigid, so i'm going to have to use thinner wire (the normal flexible wiring I use), hopefully there won't be issues on interference, especially as I need the wires to be a bit longer still, around 13" I think. Job for tomorrow!

Pic showing the drive unit working well away from it's normal position on the motherboard:

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Re: Bacteria's project: "Project Unity" (formally: Alpha Ome

Post by CRTGAMER »

bacteria wrote: Using the CD box from a Playstation 1 game.....

...and cut out a pretty tight fit in the insert from the Playstation CD holder part, looks COol too!

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:shock: :shock: Pure genius! That is a sharp looking drive tray! :D
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Re: Bacteria's project: "Project Unity" (formally: Alpha Ome

Post by bacteria »

It's free too! I've got a few PS1 games that are worthless, so handy to use their tray!

I'm hoping the longer wires will work ok and i'll not get interference; only one way to know!

Other option I have of course is a longer ribbon cable, however they are expensive!
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