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Installation & driver

1. Install FocuZ

  1. Download the latest FocuZ-<version>-Setup.exe from the Releases page.
  2. Run the installer. FocuZ installs per-user — no administrator rights are required.
  3. If the .NET 8 Desktop Runtime is missing, the installer offers to install it automatically.
  4. Launch FocuZ from the Start menu.

Versions

Releases use calendar versioning — YY.MM.DD.xx (e.g. 26.06.06.01). A plain version number is a stable release; builds tagged -beta or -rc are pre-releases. See Updates & Licensing.

2. Install the BJJCZ USB driver

FocuZ talks to the controller through a WinUSB driver. If Windows hasn't already bound a WinUSB driver to your controller (for example, if this PC has only ever run EZCad2 with its own driver), install it with the free Zadig utility.

Do I need this?

If FocuZ already lists your device under Device ▸ Connection, the driver is fine — skip this step. Only install a driver if the controller is plugged in but FocuZ can't see it.

Already using LightBurn? No driver change needed.

FocuZ uses the same WinUSB driver as LightBurn, so a laser that runs from LightBurn runs from FocuZ as-is — and you can move between the two without ever touching the driver. Just close one program before connecting from the other.

That also makes them a good pair. If you like LightBurn's drawing tools, keep using them: design in LightBurn, export the artwork (SVG or DXF), import it into FocuZ, and mark it with FocuZ's marking tools — 3D slicing, fill variation, the job sequencer, rotary splits and per-lens profiles. See Switching from EZCad2 or LightBurn.

Using Zadig

  1. Download Zadig from https://zadig.akeo.ie/.
  2. Make sure the BJJCZ controller is connected via USB.
  3. Run Zadig (no admin required).
  4. Open the Options menu → check List All Devices.
  5. In the dropdown, select the device with USB ID 9588:9899 (it may show as USBLMCV2, jczMod2, or Unknown Device).
  6. With that device selected (double-check it reads 9588:9899):
    • Set the target driver to WinUSB.
    • Click Install Driver and wait for "Driver installed successfully."
  7. Back in FocuZ, open Device ▸ Connection and click Refresh.

Pick the right device

Installing a WinUSB driver onto the wrong USB device can disable it. Only proceed when the USB ID reads exactly 9588:9899.

3. Confirm the connection

FocuZ connects automatically when it starts and finds your controller — there's nothing to click. When connected, the status indicator turns green and FocuZ shows the controller's firmware version and serial number.

If it doesn't connect on its own (for example, the controller was switched on after FocuZ started), or you have more than one controller plugged in and want a different one than it picked, open Device ▸ Connection, click Refresh, select your controller and click Connect.

Next: First-run setup.