The idea
Our first original hardware project: turn USB gamepad inputs into a DB15 arcade controller interface for superguns. Prototype and validation in progress; not for sale.
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ON THE WORKBENCH · LAB-001 · ATELIER ROCKY
✳USB interfaces / LAB-001
USB2JAMMA interface
A USB-controller-to-arcade interface designed for existing DB15 supergun controller ports. The goal is to preserve the feel of classic hardware while letting players use modern USB controls.
IN DEVELOPMENTProject stageIN DEVELOPMENT
AvailabilityNot for sale
PriceNot set
ATELIER ROCKY / LAB-001
Workshop notes
What we're investigating
The work centres on predictable active-low outputs, controller compatibility and a compact single-player design. The actual power input, protection hardware and final board revision must be verified before this becomes a product.
Next bench milestone
Reconcile the final schematic and power source, then build and measure an electrically qualified prototype on dummy loads before connecting valuable arcade equipment.
ENGINEERING PREVIEW · NOT A PRODUCT DATASHEET
USB2JAMMA — the bench file
A quick look at the current engineering direction. These are design goals and research boundaries, not final specifications.
| Topic | Current direction | Status |
|---|---|---|
| Player inputs | One USB controller, one player | Design target |
| Arcade connection | DB15 supergun controller interface | Design target |
| Output behavior | Active-low controller signalling | Engineering approach |
| Power design | Final compact revision under review | Not final |
| Supergun profiles | Pinout differences being documented | Compatibility unverified |
| Customer hardware testing | No public hardware qualification report | Not approved for sale |
What happens before it reaches the shelf?
Review the board design
Reconcile the compact board, power input, connector wiring and protection choices.
Measure a physical prototype
Verify signal behavior and safe failure states using controlled bench loads.
Document compatibility
Publish supported controller and supergun configurations only after repeatable tests.
Engineering notes are subject to change. Do not connect an unvalidated prototype to expensive arcade hardware based on this page alone.
This is a research preview, not a product listing. Specifications and compatibility are not guaranteed, and no orders are being accepted.