Ultimarc I-PAC 2 Keyboard Encoder Includes Wiring Set of Choice

LATEST version with support for power control, mouse, volume, buttons, joysticks, trackball and Spinner.
The world's most advanced PC interface for buttons and joysticks.
USB 2.0 at full speed. 32 inputs. Upgradable firmware.

I-PAC 2 (32 inputs plus trackball and spinner connector/PAC-Link extension)

I-PAC has 32 inputs, each with its own microprocessor pin. No interaction or delays, essential for multi-button games like fighting games.
I-PAC is much more than a keyboard encoder! Pins can be configured as mouse buttons or game controller buttons, plus power and volume controls.
Thanks to the multimode functionality, the interface can be switched to the dual gamepad mode or the dual Xinput controller mode.
I-PAC emulates a USB keyboard yet breaks the simultaneously pressed USB switch limit of 6 switches (plus ctrl, alt, shift) that affects all USB keyboard devices. This is because it has full native USB support built in and does not rely on an add-on adapter.
I-PAC has a shift function that allows ANY input to be assigned to a shifted secondary key code and the shift button can also have its own function, so no special extra button on the control panel is needed.
I-PAC has a self-test LED that not only provides an instant visual check of your installation, but can also indicate which connection (if any) is causing a problem.
I-PAC retains its programming including operating mode after shutdown. Look after! Not all keyboard encoders do this!

Keep in mind that:
By default, RetroPie does not detect player 2 controls. You must enable this first if you intend to use this board with RetroPie.
Just google "How to make I-PAC2 work with RetroPie" to find forum support on how to do this.

WINIPAC program:
New version boards from 2015
WINIPAC V2 programming utility for all Windows versions WinIPAC Version 2

I-PAC F.A.Q.

The I-PAC (Interface for Pc to Arcade Controls) is a series of boards that allow arcade controls such as buttons and joysticks to be connected to a
keyboard port or USB port on a PC motherboard.
This is developed around the MAME emulator which supports many thousands of games and can be used with other emulators/software that require keyboard or game controller input.
The I-PAC is designed to be used in arcade projects based on a Windows PC, but can of course also be used for many other applications.

Special shift function buttons mean that a normal keyboard is only needed for loading and configuring games, not for gameplay. All key codes can be programmed, but you don't have to as you can use the built-in default configuration which has all the standard MAME codes for quick and easy installation. Programmed key codes are stored even after power off.

This board has 32 inputs. They are all programmable and are marked as 2 joysticks, 8 buttons each, plus coin1, coin2, start1, start2 and Mame control buttons. All inputs can be assigned as a shift key to access an alternate code set. This board also has a connector that can be configured to connect the U-Trak trackball and SpinTrak spinner, or for our console interfaces.

The MAME control keys are assigned to the inputs "A" and "B" by default. View the code page for all standard commands here. I-PAC 2 code page

Latest Version Features:
Fully programmable key code set. Saved even after power off unlike some other interfaces that lose all data when power off.
Control can be assigned to any keycode, game controller button, mouse buttons, power, sleep or wake.
Three modes: keyboard/mouse, dual gamepad/mouse and dual Xinput controller.
All joystick/button connections are easily made via a screw label strip. Connections marked on the board.
Thick 5mm screw connectors.
Self-Test LED gives an instant check of all your wiring. Can indicate which input has a problem.
All button inputs refer to ground - no need to rewire separate ground to each button.
Lead connects to the USB port.
An unlimited number of keycode configurations can be saved and downloaded on the fly using host software. Keep on power off.
No separate power supply required.
Doesn't use a matrix - no ghost keys.
Does not use a scanning method that causes a variable delay. Each input has its own special connection to the built-in CPU.
Fast-running, interrupt-driven software gives a much better response than a standard keyboard controller. Key debounce uses a state method for each key. No delays between keys pressed simultaneously. (essential for fighting games).
De-bounce logic with configurable

Technical information.
This board uses a powerful microcontroller chip. No matrix or diodes are used, so absolutely no ghosting, blocking or delays.
De-bounce. A state counter method is used for this. Each input has its own counter. This means that simultaneous keystrokes are never blocked.
Key code Flash ROM storage. Keeps custom settings after off/on
Full Speed ​​USB 2.0 compatible.
Shift key logic including key stuck protection.

Delivery includes (depending on chosen version):
Set A:
  1x IPAC-2 USB keyboard encoder
  1x USB connection cable (1.5m)
20x Pushbutton/joystick connection cord in 10 different colors with 2.8mm cable lug connector (1m)
  2x Daisy-chain ground harness with 20x2.8mm connectors 

Set B:
  1x IPAC-2 USB keyboard encoder
  1x USB connection cable (1.5m)
20x Pushbutton/joystick connection cord in 10 different colors with 4.8mm cable lug connector (1m)
  1x Daisy-chain ground harness with 30x4.8mm cable lug connectors 

Set C:
  1x IPAC-2 USB keyboard encoder
  1x USB connection cable (1.5m)
20x Pushbutton connection cord in 10 different colors with 2.8mm cable lug connector (1m)
  1x Daisy-chain ground harness with 30x2.8mm cable lug connectors 
 2 x 5-pin Sanwa joystick connection cord (50cm)   

Set D:
  1x IPAC-2 USB keyboard encoder
  1x USB connection cable (1.5m)
20x Pushbutton connection cord in 10 different colors with 4.8mm cable lug connector (1m)
  1x Daisy-chain ground harness with 30x4.8mm cable lug connectors 
 2 x 5-pin Sanwa joystick connection cord (50cm)   

Set E:
  1x IPAC-2 USB keyboard encoder
  1x USB connection cable (1.5m)
16x Pushbutton connection cord in 8 different colors with 2.8mm cable lug connector (1m)
  8x Joystick connection cord in 4 different colors with 4.8mm cable lug connector (1m)
  1x Daisy-chain ground harness with 20x2.8mm cable lug connectors 
  1x Daisy-chain ground harness with 17x4.8mm cable lug connectors