
Product Overview
The RAC-ABM Add-on Button Module is a powerful expansion component designed for premium custom arcade sticks. It is engineered to seamlessly extend the functionality of your Brook Fighting Board or RP2040 Advanced Breakout Board, providing you with 5 extra, fully customizable add-on buttons.
The integrated rotary encoders allow you to quickly and intuitively map these new buttons to any function you require, making the RAC-ABM the ideal choice for fighting game players seeking maximum performance and personalized control.
Key Features & Benefits
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5-Button Expansion, Flexible Customization: Provides 5 independently configurable button ports, perfectly meeting the needs for advanced input configurations and auxiliary functions (like macros or L3/R3).
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Rotary Encoder Adjustment: The function of each add-on button can be adjusted and set via its corresponding rotary encoder, enabling quick and precise function definition.
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16 Function Coverage: The module supports up to 16 core function selections (Up/Down/Left/Right/A/B/X/Y/R1/L1/R2/L2/R3/L3/START/SELECT), ensuring perfect compatibility across all fighting games and genres.

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Original Port Retention: The module includes retention points for the main board's original wiring interfaces, ensuring that adding these new functions does not disrupt or require changes to your existing wiring layout.
Broad Compatibility
The RAC-ABM module is specifically designed for Standard Edition control boards that feature a 20-PIN header (it is not compatible with MINI versions), ensuring a stable and reliable connection.
Compatible Main Control Boards:
1. Brook Fighting Board Series:
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PS3/PS4 Fighting Board Plus
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PS4+ Audio Fighting Board
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Zero-Pi / Zero-Pi EASY Fighting Board
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Wireless Fighting Board
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XB Fighting Board
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Universal Fighting Board
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P5 PLUS Fighting Board
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Gen-5X Fighting Board
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Gen-5 Fighting Board
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Gen-5 Wireless Fighting Board
2. RP2040 Breakout Board Series:
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RP2040 Advanced Breakout Board
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RP2040 Advanced Breakout (USB Passthrough) Board
Installation Guide
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Connect to the Control Board: Use the included 20PIN ribbon cable and 4PIN ribbon cable to connect the RAC-ABM Add-on Button Module to your compatible control board.
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Connect Add-on Buttons: Use the dedicated add-on button headers on the module to connect your independent function buttons.
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Customize Functions: Adjust the rotary encoders on the module to define the required function for each connected add-on button.
Package Includes:
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1x RAC-ABM Customizable Add-on Button Module
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1x FC-20P (2*10) Ribbon Cable
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1x PH2.0 to XH2.54 4-Wire Cable