Alpaca

Absolutely Legit P*********n Arcade-style Controller for All.

A collection of hardware and software projects for a custom Project DIVA: Future Tone (DX) arcade-style controller.

Revisions

v1 - "Genesis - It does what Nintenother competitors don't"

Initial version. Finished somewhere in July 2018.

Hardware

• Laser cuttable case: Alpaca-Case#v1
• Buttons: Generic Chinese 100mm buttons w/ Sanwa OBSA-SP-200G
• Slider: Resistive (SoftPot)
• PCB: Teensy LC
  • Input: 2x CD4021B
  • Button LED: TPIC6C596
  • Auth: USB Host Shield (MAX3421E)
• Power Source: USB + 5VDC

Firmware

Alpaca-FW

BOM

TBA

Wiring diagram

doc/v1/wiring/out/wiring.pdf

v2 - "The PitchBender"

In development. Specs listed below may change at any moment.

Hardware

• Laser cuttable case: Alpaca-Case
• Buttons: Generic Chinese 100mm buttons w/ Sanwa OBSA-SP-200G
• Slider: LKP with WS2813 RGB LED strip (144/m, 72 LEDs total)
• PCB: Teensy LC + TeensyFighter LC (perfboard option is also possible)
  • Input: MCP23017 (on TeensyFighter LC PCB) 2x CD4021B
  • Button LED: TPIC6C596 (over SPI)
  • Auth: USB Host Shield (MAX3421E over SPI)
• Alternative PCB: Alpaca-NGIO
  • Input: On-chip GPIO
  • Button LED: External MCP23008+ULN2803A over I2C. (details TBA)
  • Auth: On-board USB or native
• Alternative PCB: Alpaca-OwO
  • Input: On-chip GPIO
  • Button LED: External MCP23008+ULN2803A over I2C. (details TBA)
  • Auth: Native
• Power Source: USB + 9V-24V DC (At least 20W)

A mod kit for Project DIVA Arcade Future Tone stock control panel is also planned.

Firmware

Main: Alpaca-FW for v1 electronics, passinglink (details TBA) for Alpaca-NGIO.

LKP: LKP-FW (Native variant, WIP.)

BOM

TBA

Wiring diagram

TBA

Progress

Crucial: Whether or not using alternatives from Alpaca v1 is feasible.

• Yes: No alternative from Alpaca v1. Component is essential for Alpaca v2.
• No: Alpaca v1 components will work to some extent and their v2 counterpart can be developed later. Or the component is optional.

Hardware

Subproject	Crucial?	Status	Description
Alpaca-Case v2	⭕ Yes	✅ Done	Prerelease.
LKP v1	⭕ Yes	✅ Done	Schematic and parts: Done, PCB: Done.
LKP-Diva-Assy	⭕ Yes	✅ Done	LKP PCB holder: Done, LED strip mount: Done.
Alpaca-NGIO	❌ No	❌ Delayed indefinitely
Alpaca-OwO	❌ No	🚧 WIP	Pending testing

Software

Subproject	Crucial?	Status	Description
Alpaca-FW	⭕ Yes	🚧 WIP	RP2040 support: 0%, LKP interop: 0%, lib15275 interop: WAIT.
LKP-FW	⭕ Yes	✅ Done	Native: Done (First PoC), 15275 Serial: Done.
lib15275	❌ No	🚧 WIP	~80%. Request/response: Done, LED pattern generator: TODO