EDIT: Now it's going to be a really little candy cab. For those who don't know what a candy cab is, it's a Japanese arcade machine, usually made of plastic or metal. Just search "candy cab" and you'll see some pretty sweet machines. I'm specifically basing my design on the Aero City cab.
A while back I had a bad idea. Get a Retro Duo, put it in a homebuilt arcade cab with my Wii screen, and put in some controls. Of course, there were obvious problems. First, I would have to start buying SNES games. Second, you would only be able to play two different games without changing cartridges. Third, the Wii screen is a piece of crap. The controls would cost nearly $100 all told and it seems like a waste for such a piece of crap.
Then my dad got me a computer. It's a PIII 1GHz that was going to get thrown out. It's big, a full size ATX desktop. Onboard graphics, but it has an AGP slot so I can stick in that GeForce 5200 once I find it.
I re-drafted my plan. This time, it would be a 15" LCD monitor connected to the computer which would run MAME and emulators. It would still be two player, with Japanese controls, probably Sanwa. At this point I think I'll go with JLF sticks, black ball-top with shaft cover, Sanwa OBSN-24 pushbuttons, and either SDM-18 or Radioshack pushbuttons for start and select.
The other day, I was bored in robotics so I built a ghetto coin mech. I have no idea how a real one works except that they are overcomplicated. So I built a really simple one that sort of works. The coin goes in the top angled slot (the whole thing will be tilted) and if it doesn't fall through another slot rolls through an opto inturrupter and gives you a credit. The top slot is sized to allow a quarter and nothing bigger to fit through. The bottom slot (hidden) allows dimes and probably pennies to reliable drop through and nickels to sometimes drop through. Now, this acceptor is evil. There is no reject. Once your coin is in, it's in. Dimes and pennies are accepted without giving you a credit. With a nickel it's a 50/50 chance. Sometimes the coin gets jammed and you have to hit it a few times. And of course, it's super easy to fool. Now I was originally going to use a microswitch, but the coin refused to actuate it. I tried to ghetto it with two exposed wires, then had a brainstorm and added the opto-inturrupter.
I may start working on this project anywhere between next week to next year. But while I'm on a topic, I need a name. I'm using LOLCADE as a temporary project designation, but it's a pretty bland and nooby name. And I have to figure out how to ghetto-rig a marquee.