| START HARDWARE CONFIG TECH TIPS DOWNLOAD | | SimVimPanel BARON-58/SIM

SimVimX plugin and Firmware Installation


Plugin Installation: add the SimVimX plugin to your X-Plane as any other plugin. Just extract the SimVimX zip file as-is to X-Plane's "Resources/plugins" folder. The new menu item “SimVimX” will appear in X-Plane's Plugins menu. Supported systems: Linux, Windows, OSX.

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The status window shows the connected SimVimPanel instrument modules and connection status (you have to select to show the Status window):

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Download - (please use the latest versions to avoid problems with your working configuration).

The latest database file (SimVimX.dat) is always included in the plugin archive, but note that it can be updated frequently, even if the main SimVimX plugin has not been updated to a new version. Always replace older SimVimX.dat file in the plugin folder with the latest one. It includes all predefined parameters, the "embedded" conversion data for some planes, name auto-correction list (to replace old parameter names with new ones), etc.


Current SimVimX version (Plugin and database file), all systems SimVimX Plugin - v2.19 14 Aug. 2023
Latest database file (can be included in the plugin archive above) SimVimX.dat 20 Oct. 2023
Experimental plugin for Apple Silicon (aarch64-macos) SimVimX Plugin - aarch64-macos beta
Latest changes overview Full Versions History

Note: X-Plane 12 Mac users with Apple Silicon processors can use the beta plugin archive for aarch64-macos above. Requires additional files from the main archive. Currently does not check for updates online.

Plugin Update: Extract the new SimVimX zip file as-is to the X-Plane plugins folder and confirm the files replacement. Don't delete anything from the SimVimX plugins folder before update, as it contains your created data.cfg file and the devices.prf file that keep all configuration and settings! Note: if you have the older vesrion in the "SimVim or HCSCI" folder, delete that folder (or you can extract the new SimVimX version to that folder and then rename it to "SimVimX")


SimVimX Firmware

The SimVimX firmware is a heavily optimized program code, written from scratch (without using third-party Arduino libraries) to handle a large number of inputs, synchronize data control for a large number of different input/output devices, exchange data between plugin and “slave” boards.

SimVimX System doesn't allow to use the controller board as a "usual" Arduino and users can not add any custom code, as there is no Arduino sketch, and the plugin uploads firmware directly to the board. At this moment the Atmega2560 is used as a convenient and easily available controller platform for SimVimX firmware.


The system is designed to work only with SimVimX plugin. The latest stable firmware is usually included in the plugin. The SimVimX Firmware needs to be uploaded only once, directly from the SimVimX plugin menu at the first time, or automatically on updates, as described below.

Also, the latest or beta Firmware versions can be provided on the Patreon (or Boosty) blog as SimVimX.dat file that regular subscribers can download and place it to the SimVimX plugin folder after that it will be uploaded automatically. Without this file the in-built firmware will be used.

You can see the firmware version on every connected LCD after the config initialization in the second line.


>> Latest changes, description Database file / firmware (SimVimX.dat + plane conversions)

Fresh (first time) Firmware upload

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First time Firmware Upload


  1. Open the "I/O Hardware" window from SimVimX plugin menu.
  2. Make sure the master board (Mega2560) is not connected to USB and click the "[Continue] button.
  3. Plug the master board (Mega2560) USB cable into X-Plane computer USB port.
  4. Click the button >> "Master" in the Firmware Upload section on the left. The [Upload] button will appear in the window.
  5. When you see "Controller Board Connected" click "UPLOAD" . Wait until firmware upload is complete (about 3-5 s).

    If you need to upload the Ethernet firmware version set the "Ethernet" checkbox before pressing "Upload".

  6. After upload the plugin will connect to this controller automatically.

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On successful connection you will see the messages "Master Board: Connected (USB/LAN)" and "Configured: 1 Input, 1 Output"
This means your board is working correctly, and you can start wiring all input controls and output devices to the controller and use the Configuration tool to assign all of them, but before you can run a simple test to make sure:

  • Load some standard X-Plane aircraft (Cessna or Baron 58). Connect a toggle switch to pin #5 / GND and flip it on/off.
  • The on-screen Pitot switch will change its position accordingly with your real switch. The on-board LED on the master board will change its state (Pitot Heat is on/off).

Connection, notes

  • If you have changed the configuration "data.cfg" file while X-Plane is running, just click the "Reload Config" button in the Status window.
  • The plugin should always establish connection automatically every time X-Plane is started, no matter how many times you have done it.
  • If you use Ethernet firmware instead of USB you don't need USB cable to be connected until you will need to upload a new firmware version.
  • Note for Linux users: Some Linux distributions do not grant the user access to serial ports by default. In this case you need to add your user name to the "dialout" group.

Firmware Auto-Update

The plugin checks the currently used firmware version on connection, and if it needs updating (the new stable firmwre is included to the plugin or plugin finds a beta SimVimX file in the plugin folder), the program uploads the new firmware to the board and then establishes connection. There's nothing more for you to do for the serial USB version.

  • For Ethernet version you need to connect your master board to USB (or reconnect it) and click "Upload" - just like during the first upload.

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RealSimControl / SimVim / SimVimX 2012 - 2023