Here is my section dedicated to Arcade Gaming. Arcade PCBs are designed to suck in your money at record pace, providing a fast-paced immersive gaming experience that makes you wanna come back for more.
There are only 2 ways to enjoy arcade games at home:
1) you can go out and buy a full arcade cabinet, or 2) you can buy or make a supergun.
The Supergun is essentially the necessary parts of an arcade cabinet put into a box with outputs to your TV and some sort of video game controller. It is a universal unit used to play your arcade games at home.
Most arcade games operate using the JAMMA standard (from the late 1980's onward). This page will dive into the details of that standard and some custom circuits you can build for your own unit. Note, I won't be going over JAMMA wiring and I suggest using a search engine for a beginner's guide on this. The information here assumes some electronics knowledge.
My first project making a supergun was actually pretty brave: I decided to build an all-in-one supergun/power supply combo. Rather than having a box with the supergun components and a separate PSU (or Power Supply Unit), I built everything into a power supply. This took some skill and focus since I used the original PSU case and had to cram all the additional goods inside. It turned out pretty nice though, and I added an illuminated cooling fan, power LEDs, and a headphone input in addition to the usual outputs. The blue pots are for RGB adjustment and the DB-9 is an RGB output for gaming monitors. I used DB-15 connectors for Neo Geo contoller inputs (this is the easiest, since they support up to 6 buttons without logic ICs).
My second attempt was actually the same setup but simplified to reduce customer cost. The result is a cleaner look that still has a conveniently enclosed PSU. (nw with S-video)
My third supergun took things a good step further. I made a few improvements and added some extra features, per customers request. This setup includes a detachable JAMMA harness, 2x autofire circuits, and better power regulation. I decided to make this setup using a clear case so that it would illuminate in the dark (via blue LEDs) and show off my the internal work.
My fifth supergun (need to get pics from my 4th) is by far the finest of the bunch as is my personal copy. I spent over a year working on this beast and have made some recent upgrades. It includes:
- Detachable harness (made of diecast metal that doubles as a heat sink)
- 2x LM555 autofire circuits (scroll down for schematic)
- Stereo and low level audio capability (in progress to updgrade with proper audio isolation)
- RGB video amp + buffer stage and LPF (using THS7314)
- Luma trap + rainbow banding control
- TTL Sync cleaning (using ISL59885)
- Voltmeter (using Maxim's ICL7107)
- Adjustable PSU output (LM1084, 5A constant output up to 8A)
- Chroma encoder auto-shutoff with RGB input (power saving)Not only that but it is the smallest supergun (...in the world?) with a fully built-in power supply. It has an enclosed 12v 5amp supply with Every circuit is thoroughly shielded, diode protected, and fused to ensure maximum protection and quality. This project took my maximum shrinking/cramming work and the finest soldering skills to date. Here are some pics of the inside:
Note, this has been vastly updated recently (pics to come). and here is a schematic I made for the voltmeter circuit inside (note, you can buy these now for $3 on ebay....this was built 10+ years ago when that option wasn't available, heheh):
I am also planning to add a Y/C buffer/summer stage with my own LRC bandpass Luma Trap (see AD725 datasheet for info). Other planned upgrades include MUXs for switching autofire circuits, cooling fan speed control (reducing noise), mapping autofire A to the D button on Neo Geo pads, +5v regulator LEDs, -5V output, better power saving with DC-DC reg (prior to 78M05 for video ICs) and proper audio isolation transformers.