Usage Guide

Last revision 2026/01/09

Software Preparation

Software GUI

GUI software is provided for adjusting OBD-II PIDs, DTC and VIN through a Windows PC (MAC and Linux version soon). The software can be downloaded here. Please extract the downloaded compressed file and run FreematicsEmulator.exe to launch the GUI.

Obdemugui_common

Obdemugui_engine

New features are added and new versions are released on monthly basis to extend and maximize the capacity of the emulator hardware.

iOS App

The emulator can be controlled and configured through BLE (Bluetooth Low Energy) by Freematics Emulator App available in App Store.
Freematics Emulator App

Usage Guide

To start using the emulator, following these steps:

  1. Connect DC 12V power adapter to the emulator
    picture1
    The emulator requires DC 12V power supply. Any DC 12V (minimum 1A) power adapter with 5.5/2.1mm connector can be used. The DC input socket is located beside the USB port.
  2. Plug in USB cable and connect to PC
    picture2
    Driver is automatically installed on Windows 7/8. For Windows XP, please download the driver from here.
  3. Open Freematics OBD-II Emulator GUI software and connect with the emulator
    picture3
    Plug in the emulator and run FreematicsEmulator.exe to launch the GUI software. Click Connect button and the software will attempt to connect with the emulator. Once connected, the Connect button will turn into Disconnect.
  4. Plug in your OBD-II device (with OBD-II male connector) into emulator’s OBD-II female port
    picture4
    Your OBD-II device should then work as if plugged in the OBD-II port of a real car. You can use the GUI to change the value of OBD-II PIDs, set diagnostic trouble code (DTC) and VIN.

Usage Guide with Freematics Emulator App

To start using the emulator (with BLE option) with Freematics Emulator App, following these steps:

  1. Connect DC 12V power adapter to the emulator
    picture1
    The emulator requires DC 12V power supply. The DC input socket is located beside the USB port.
  2. Install Freematics Emulator App
    picture6
    Search “Freematics Emulator” from App Store and install it on your iPad. Yes it’s free.
  3. Search and connect the emulator
    picture7
    Click the search icon on top-right and the App will search for nearby Freematics OBD-II Emulator through BLE. The found emulators will be listed. Tap on one (or the only one) to connect.
  4. Plug in your OBD-II device
    picture8
    Once connected, you will be able to use your iPad’s touch screen to adjust the value of PIDs and configure the emulator. The custom tab allows you to add any supported OBD-II PIDs to the screen as a knob. This is done by tapping the top-left icon and choose the PIDs from the list.

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