set up

REACTA is shipped with basic settings,

The design is based on the assumption that it will be readjusted to suit the usage environment and playing style.

  • Introduction

  • 1｜Connect to PC

  • 2｜Start connection

  • 3｜Connection confirmation

  • 4｜Calibration

  • 5｜Stick adjustment

  • 6｜Trigger adjustment ①

  • 7｜Trigger adjustment②

  • 8｜Controller Settings

  • 9｜Trigger Configuration

  • 10｜LED settings

  • 11｜Button assignment

  • 12｜Polling Rate

  • 13｜Apply settings

  • 14｜Complete

Introduction

Calibration is a required process when using the tool. If calibration is not performed on a PC, other setting items will not be enabled.

Also,

If you change the PC you are using

If you feel uncomfortable with the settings

After the update

Please perform calibration again.

Calibration Tools

*The dedicated web tool will open in a separate tab.

Once opened, follow the instructions on this page.

*Calibration/updates are for PC (Windows/Mac) only.

1｜ Connect to PC

Connect your PC and controller with a USB cable.
When connecting, hold down the PS button.

When the LED indicator changes, you are in setup mode.


* Whenever possible, connect directly to the USB port of your PC.

2｜Start the connection

Tap [Connect Controller] on the calibration tool. Communication with the controller will begin.

3｜Check the connection

When the device list is displayed, select the connected controller and connect it. If it is recognized successfully, proceed to the next step.

4｜Calibration

When the setup screen appears, follow the on-screen instructions to begin calibration.

*Do not touch the sticks or triggers until instructed to do so.

4｜Stick adjustment

Follow the on-screen instructions and slowly move the left and right joysticks to their maximum.

By correctly recognizing inputs in each direction, the center position and range of motion of the stick are optimized.

*Do not touch the stick until instructed to do so.

6｜Trigger adjustment ①

Perform initial trigger adjustment by quickly clicking the left trigger (L2) as instructed on the screen.

Trigger


Press firmly and then release naturally. Repeat this action five times.

*If you are using a click trigger, skip to step 【9】 .

7｜Trigger adjustment②

Next comes the precision adjustment of the trigger.
Press it all the way in and then slowly release it. If you've done it correctly, the counter will advance.


Once you've completed the left, do the same with the right trigger (R2).

8｜Controller Settings

Once calibration is complete, you will be taken to the main controller settings screen.

On this screen,

Check the stick position

Deadzone Adjustment

Manual correction of stick center position

Stick Curve Adjustment

You can do things like:

9｜Trigger Configuration

You can adjust the position at which the trigger is determined to be "pressed" while looking at the screen.

Check the input threshold and set it to suit your playing style.

10｜LED settings

Customize the LED display on your controller.

You can change the color and brightness to customize the display to your liking.

11｜Button assignment

Supports remapping of up to 6 rear buttons.

The MERKA.G customization only has two back buttons. Here you can set the assignments for the back buttons.

When you press the button you want to assign, the corresponding item will be highlighted on the screen. Adjust the assignment while checking the display.

12｜Polling Rate

The polling rate can be adjusted from 125Hz to 8000Hz.

If performance is important, we recommend setting it to 8000Hz.

* Depending on your environment (PC performance and connection status), high settings may cause unstable operation.
In that case, adjust it to a stable value.

13｜Apply settings

Once all adjustments are complete, save the current settings.

The settings will be reflected on the controller itself.

14｜Complete

On the next screen, please wait until all checks are completed.

At the bottom of the screen, you will see "Settings complete" (settings have been applied successfully).


If this is displayed, everything is complete.
Please enjoy.

Feature Details Guide

  • Introduction

  • 1｜Stick adjustment

  • 2｜Trigger adjustment

  • 3｜Back button assignment

  • 4｜Polling Rate

  • 5｜LED settings

Feature Details Guide

This guide explains the various adjustment functions that can be performed after calibration is complete.

To optimize the feel of the controls, please make fine adjustments to suit your environment and playing style.

This guide outlines the role and priority of each adjustment item.

We recommend that you start by adjusting the sticks.

Setting Priority

We recommend that you start adjusting the items that directly affect input and operation feel.

Stick adjustment

Trigger Adjustment

Rear button assignment

Polling Rate

LED Settings

Stick adjustment

With REACTA, you can do everything from checking stick operation to making fine numerical adjustments.

The adjustments are divided into the following functions:

  • Select to see details

  • basic

  • Advance

  • Re-Center

  • readjustment

  • curve

  • Dead Zone

⚠ Stick adjustment (important)

Since sticks are subject to individual differences, the numbers may not be the same for the left and right sticks.

*Even after calibration, there may be differences in the center position, how far the maximum input reaches, and how far it returns.
This is by design and is not necessarily a defect.

*It is recommended to adjust the values ​​so that the actual operation feels natural rather than "aligning the left and right".

Introduction

Trigger adjustment allows you to change how the input responds to pressure.

You can adjust the timing of when to start shooting and the position where the maximum input occurs.

  • Select to see details

  • Trigger Mode

  • Static/Maximum Input

  • Hair Trigger Threshold

⚠ If you have implemented a click trigger/click bumper

Since this is a physically digital (ON/OFF) operation, the analog adjustments on this page are not necessary.

*If it is clickable, the input will not change depending on how much you press it.

Rear button assignment

You can assign any button input to the rear buttons.

By placing jumping, crouching, reloading, etc. on the back, you can operate them without taking your thumb off the stick.

■ Allocation method

From "External Input Mapping", select the button number you want to set.

Open the drop-down menu and select the input you want to assign.

If necessary, press the physical button to identify it.

Once the settings are complete, they will be saved.

To remove it, change the assignment back to "None."

⚠ For models without rear buttons

This function cannot be used on models without rear buttons.

Polling Rate

The polling rate indicates how often the controller sends input information to the PC.

The unit is Hz (Hertz).

■ The higher the number,

Less input lag

Smoother input

■ The lower the number, the better.

Light load on the PC

Operation is stable

■ Recommended settings (PC)

1000Hz to 8000Hz

8000Hz is available on high performance PCs.

⚠ Attention

Depending on the CPU performance and USB environment, operation may become unstable when set to a high value.
If operation is unstable, lower the value.

LED Settings

You can change the LED display on the controller.

■ Mode

OFF: Turns off the LED.

STATIC: Always on.

BREATHING: Flashes slowly.

■ Brightness (Intensity)

You can adjust the brightness of the LED.

The higher the value, the brighter it becomes.

■ Color

You can change the color that is displayed.

You can specify a color using the color picker or a color code (e.g., #00FFFF).

About updates

REACTA is scheduled to continue to add new features and improve the game.

Check below for the latest updates and tools.

  • Introduction

  • 1｜Connect to PC

  • 2｜Start connection

  • 3｜Connection confirmation

  • 4｜Select version

  • 5｜Installation

  • 6｜Update completed

Introduction

REACTA ships with stable firmware installed, so no updates are required for normal use.

Follow these instructions to update only if bugs have been fixed or new features have been added.

Update Tool

*The dedicated web tool will open in a separate tab.

Once opened, follow the instructions on this page.

*Calibration/updates are for PC (Windows/Mac) only.

1｜ Connect to PC

Put the controller in an update-enabled state.

Hold down R3 (Right Stick Press).

Press and hold while connecting the USB cable to your PC.

Continue holding it until the LED turns green.

When the LED turns green, it's ready to go.

2｜Start the connection

Click "Connect Device" at the bottom of the screen. Once connected, the update tool will recognize the controller.

3｜Connection confirmation

When the device list is displayed, select the connected controller and connect it. If it is recognized successfully, proceed to the next step.

4｜Select version

Once the connection is complete, a list of firmware versions that can be installed will be displayed.

where:

Upgrade to the latest version

Downgrading to a previous version

Either option is available.

Please follow the instructions for your operating environment and troubleshooting and select the version you wish to install.

4 | Installation

Once you have selected the version, click Install Selected Firmware.

During installation

Do not unplug the USB cable

Do not perform any other operations

Please do.

6｜Update complete

Once the firmware update is complete, the controller will automatically reboot into normal mode.

Be sure to perform calibration after updating.
If you do not do this, stick operations will not be reflected correctly.
Continue to the calibration tool and complete the setup.

Upgrade/Downgrade

Even if you update again

* Calibration is required after updating. If you do not perform it, you will not be able to operate the sticks.

Important Information

The biggest feature of the REACTA board is that it supports a native 8K polling rate , so there is no need to use third-party overclocking software. The JDM-5X can be configured through the setup link provided in the FAQ and supports the following onboard settings:

- Remappable rear buttons

- Inner/outer dead zone adjustment

-Customize stick curve response

This product is a custom board and does not include the following features:

・Console connection function ・Bluetooth connection ・Macro function ・Key assignment function ・Vibration motor ・Touchpad function ・Battery

Do not overclock. REACTA already operates at an optimal 8K polling rate. Attempting to overclock may result in instability or slower response times. For best performance, connect directly to the USB port (USB-C to USB-A) on the back of your PC.

サポート

サポート・追加情報

Para obtener ayuda y actualizaciones sobre Marius, consulte las siguientes plataformas oficiales.

Sitio web

YouTube

Instagram

X / Twitter

Patreon

Discordia

よくある質問

¿Puedo jugarlo inmediatamente después de abrir el paquete?

Sí, está listo para usar desde el primer momento. Nuestros técnicos lo configuran y calibran antes del envío.


*La configuración inicial está optimizada, pero puedes personalizarla a tu gusto en https://setup.mariusheier.com .

接続方法と端子仕様について

Debido a que la placa REACTA está diseñada con la precisión de entrada como máxima prioridad, su funcionamiento puede variar según el entorno de conexión.

Dependiendo de las especificaciones de su PC y del entorno de juego, es posible que USB-C a USB-A no funcione correctamente.

Si el dispositivo es inestable, utilice un cable USB-C a USB-C.

No utilice un concentrador USB ni puertos USB frontales; conéctelo directamente a los puertos de E/S en la parte posterior de la PC.

*Debido a las especificaciones de control USB, pueden ocurrir fallas de reconocimiento, conexiones inestables y tasas de sondeo reducidas.
*Esto no es un defecto del producto.

¿Se requiere algún software adicional para usarlo en una PC?

No es necesario. Aunque la REACTA (JDM-5X) usa el mismo formato que la PS4, no es compatible con ella. Al estar diseñada específicamente para PC, se puede usar directamente sin necesidad de software adicional como DS4-Windows.

セットアップ構成と更新リンク

セットアップや再調整、ボタンの再マッピングを行う際は、以下のリンクからアクセスしてください。

 

セットアップ：
https://setup.mariusheier.com/

 

最新のファームウェアやアップデート情報については、Mariusさんの公式チャンネルをご利用ください。

 

ファームウェア更新ページ：
https://update.mariusheier.com/

 

更新に関するお知らせは、Marius氏が運営する公式チャンネルをご利用ください。

¿Podrías decirme cuáles son los pasos de configuración inicial para MERKA.G?

Ajustes del stick

Zona muerta interna: 1-2%
Zona muerta exterior: 3-5%

Al aumentar la zona muerta exterior, la tasa de error de redondez se mantiene cercana a la del producto original, lo que reduce el riesgo de movimiento diagonal lento.
En el modo detallado, ajuste cada dirección básica (arriba, abajo, izquierda, derecha) para alcanzar fácilmente su valor máximo (los valores exactos variarán según el controlador).

Configuración del disparador

Modo: Analógico (Consulte "¿En qué modo debo configurar el disparador?" para obtener más detalles)
Descanso (posición estacionaria): Ajustado individualmente por cada controlador.

Presione (Posición de entrada máxima): Ajustable individualmente para cada controlador.

Umbral de activación del cabello: 100 % (este control deslizante no funciona como se esperaba, por lo que lo configuré al 100 % para deshabilitarlo de manera efectiva).

CONDUJO

Color: #FF5300 (MERKA.G Naranja)

Botones de retroceso

Izquierda: ✕

Derecha: ○

Tasa de sondeo

8000 Hz

¿En qué modo debo configurar el disparador?

Para todos los mandos equipados con REACTA (JDM-5X), configure los gatillos en analógico. Esto aplica tanto a los gatillos de fábrica como a los de clic.


No seleccione "Omitir este paso" durante la configuración inicial. Si omite un paso accidentalmente, puede corregirlo ejecutando la configuración de nuevo. Compruebe que la sección "Configuración del disparador" del menú de configuración esté configurada como "Analógico".
Si selecciona digital, se le indicará al controlador que busque activadores en la placa Eagle, lo que no funcionará correctamente.


*Esta información puede cambiar debido a futuras revisiones de la placa o actualizaciones de software. Última actualización: 13 de marzo de 2026

Cambiar el umbral de activación del cabello no cambia la respuesta.

En REACTA (JDM-5X), el control deslizante del umbral de activación no funciona como se esperaba.

Por lo tanto, MERKA.G lo desactiva eficazmente configurándolo al 100%.

¿Qué debo hacer si la placa no funciona a 8kHz?

まず以下をご確認ください。

 

セットアップ設定：ポーリングレートスライダーがリセットされていないか確認し、キャリブレーションを再保存してください。
ケーブルの仕様：USB-A → USB-C、USB 3.0以上を推奨します。
接続先のUSBポート：USBハブやフロントパネルは避け、マザーボードへ直接接続してください。

 

上記で解決しない場合は、MariusのDiscordサーバーhttps://discord.com/invite/QcCkfbkp3Sにてサポートをご依頼ください。
※ポーリングレートの確認にはhttps://tools.mariusheier.comのDEEPPOLLツールをご利用ください。

¿Dónde puedo consultar la tasa de votación?

Utilice la herramienta DEEPPOLL en https://tools.mariusheier.com .
*Esta herramienta solo mide la tasa de sondeo. No mide la latencia de entrada.

Si tienes alguna pregunta, consulta el servidor Discord de Marius ( https://discord.com/invite/QcCkfbkp3S ).

HIDUSBFをREACTA（JDM-5X）コントローラーで使用できますか？

ソフトウェア自体は問題なく動作します。ただし、REACTA（JDM-5X）ボードや接続USBポートにHIDUSBFでオーバークロックを適用すると、パフォーマンスが低下する可能性があります。8KHzの設定はMariusのセットアップページからのみ適用してください。

If you have trouble setting up REACTA

If you are unable to resolve the issue after trying the steps in this manual, please contact REACTA's dedicated support via LINE.

Talk to REACTA Support

*We may ask you about your usage environment to confirm the situation.
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