PC interface for arcade buttons,joysticks and LEDs.
Speed USB 2.0. 48 Inputs, 96 outputs. Upgradeable Firmware.
NO EXTRA WIRING required for most
standard installations. All switch
Trackball and spinner simply plug in. RGB LEDs simply plug in (Ultimarc
Ultralux or ClassicRGB).
This board has a total of 176 connections. If you were to hand-wire
every LED and switch this would be a total of up to 576 wire ends to
strip and connect! Which is why we have done it for you.!
48 inputs each with it's own
microprocessor pin. No interaction
or delays, vital for multi-button games such as fighting games.
Emulates a USB keyboard and yet
breaks through the USB simultaneously-pressed-switch limit of 6
switches (plus ctrl,alt,shift) which afflicts all USB keyboard devices.
This is because it has inbuilt full native USB support, and does not
rely on an add-on adaptor.
Also emulates Mouse, Game Controller and Power/Volume Control.
All input pins can be assigned to any keyboard key, gamepad button
(including hat switch), mouse button or power/volume control. Also
Inputs can be assigned as trackball and spinner and our U-Trak and
SpinTrak devices plug directly into the board.
Shift function which allows ANY input to be assigned
to a shifted secondary keycode and the shift button can have it's own
function too so no need for a dedicated extra control panel button.
Self-test LED which gives an instant visible
check of your installation.
96 channel LED controller with constand-current drivers. Also 8
high-current 1 amp drivers.
Brand new INTERACTIVE configuration utility which applies and reads
back any changes "on the fly".
MAME Defaults pre-loaded.
I-PAC Ultimate I/O retains it's programming after power off. Beware!
Not all keyboard
encoders do this!
Special version available with ACCELEROMETER chip on board which is
configured for "nudge detect" mode.
The I-PAC series
(Interface for Pc to Arcade Controls) are
boards which allow connection of arcade controls such as buttons and
joysticks to a USB port on a PC motherboard. They are
designed around the MAME emulator which supports over 1000 arcade games
and can be used with other emulators.
It is designed to be used inside an Arcade Games cabinet with the PC
motherboard also mounted inside, but could just as easily be used with
simply a control panel without a cabinet.
Special shift function buttons mean that a normal keyboard is only be
needed for game loading and configuration, not for gameplay. All key
codes can be programmed but
you dont have to
as you can use the built-in default configuration which has all
standard MAME codes for quick
and easy installation. Programmed keys codes are stored even after
programmable key code set. Stored even after power
off unlike some other interfaces which lose all data when powered off.
- Controls can be assigned to
any keycode, gamepad button, plus
power, volume up/down, sleep or wake.
- Wiring harness
supplied for 32 input connections.
Additional harness options for the other 16 inputs. Connections marked
on the board.
- Trackball and spinner
interface. When enabled these use a total
of 6 of the available 48 inputs.
- Example configurations
include: 2 player with trackball/spinner.
4 player without trackball/spinner.
- Self-Test LED gives an
instant check of all your wiring. Can
indicate which, if any, input has a problem.
- All button inputs
referenced to ground - no need to
re-wire separate grounds to each button.
- Supplied USB
cable plugs into PC USB port.
- Using host software, an
unlimited number of keycode
configurations can be stored and downloaded on-the-fly. Retained on
- No separate power
needed for controls.
- Does not use a
matrix - no ghost keys.
- Does not use a
scanning method which causes a variable
delay. Each input has it's own dedicated connection into the on-board
- Fast running
interrupt-driven software gives much better
response than a standard keyboard controller. Key debounce uses a state
method for each key. No delays between keys depressed at the same time.
(essential for fighting games).
- 2 operation
modes. Either uses standard MAME keys or you
can program your own character set.
- Shift functions.
Holding "Start1" and pressing other
buttons sends a range of codes for MAME functions such as "escape",
"Coin 1", "tab", "enter". This means no extra buttons are needed on the
cabinet. In programmable mode any input can be the shift key and all
keys can be programmed with a shifted code.
- Special note for
Windows MAME users! Shift key functions
mean you can select and start games from the Windows interface without
using the keyboard or mouse.
- No special
drivers needed. USB drivers are generic
- Fully compatible with all
Apple Mac (excl config utility).
- Supports the Apple Mac
"command" key and the Windows "GUI" keys.
- Special board version
available with Accelerometer on board. When
enabled this sends "arrow" keys,
responding to physical movement.
LED channels with 256 brightness levels for full RGB
be used with single-color or RGB LEDs (RGB use 3 channels)
current negates the
need for resistors for each LED
be used with LEDs with
inbuilt resistors if required
“attract-mode” or test sequences which run
power-up with no PC present
configuration utility allows customisation and storage of attract-mode
fades with preset speed on-board.
Multiple fades can overlap
with power cable for
plugging into a PC disk drive
including test application,
Software Development kit for adding support to your own programs, and
LedBlinky third-party software
Ultralux RGB and ClassicRGB pushbuttons simply
plug in. Other harnesses and connectors available.
X 1 amp MOSFET
drivers which are suitable for LED strips and other high-power
Third-Party Software and SDK Support
As most third-party software and our SDK is cross-product, we have
placed all details on this page
here for switch wiring information
LED support works in an identical way to our PacLED64 except there are
96 LEDs instead of 64.
LEDs can be controlled using our SDK or the third-party LEDBlinky
The board is shipped with a pre-configured LED script which fades up
all LEDs, then down, then enables each LED in turn, to one color, then
cycles. You can change this script if you wish. The LED script runs
from power-on even before the PC is running and stops running as soon
as any control is activated.
Click here for LED wiring
|2 Players using Ultralux
RGB or ClassicRGB buttons, U-Trak
trackball, Spintrak Spinner
||Nothing extra required.
Order Board with 2-player harness
LED Power Cable
Ground daisy-chain harness
|4 Players using Ultralux
RGB or ClassicRGB buttons, No
trackball or Spinner (these are not supported in a 4-P config)
board/harness (see above)
4-player expansion kit.
|Either of the above but
using single-color LEDs such as
||Order as above plus one
"LED Connection Pack" per 9 LEDs,
Also one "Daisy-Chain Harness" per panel for LED common connections.
||Extension Harness Pack.
This is used for unusually large
panels for increasing reach of any longer wires.
PCB Mounting Feet
The above picture shows the board fully wired for 2 players including::
- Power Cable (included)
- USB Cable (Included)
- Switch harness (included)
- Daisy-chain ground harness
- LEDs (not included). Note
these are examples only, to show
connection. Our Ultralux RGB and ClassicRGB LEDs have longer wires than
- U-Trak Trackball (Not
- Spintrak Spinner (Not
This board will also control our RGB illuminated joystick handle which
simply plugs in. Check out control page
for more details.
Harness Detailed Information
|Player 3-4 Connection Pack
||9-LED Single Color Connection Pack
||330mm / 13 inches
|Daisy Chain Ground
||90mm / 3.5 inches per
|LED Power Cable
|Extension Harness Pack
(Wires replace existing)
||560mm / 22 inches
|Player 3,4 Connection Pack
||20 Plus 20 Ground
||560mm / 22 inches
|9-LED Connection Pack. Required for each 9 single-color LEDs
(Our RGB are pre-wired)
||9 plus common
||560mm / 22 inches
for latest firmware..