① Check for a Gray Glove Icon✅ Open the SteamVR main interface.Check whether a “gray glove icon” appears (this indicates that SteamVR recognizes the glove device, but it has not been assigned correctly). ② If There is a Gray IconFollow the steps based on your tracker type:➤ Using a Lighthouse tracking system (e.g., Tundra Tracker / VIVE Tracker):Go to: SteamVR → Settings → Controllers → Manage Trackers.Assign each tracker to Left Hand / Right Hand / Held in Hand.After assigning, restart SteamVR and check if the icon returns to normal.➤ Using standalone headset tracking (e.g., Quest / PICO with controllers as trackers):Find the UDCAP software shortcut → Right-click → “Open file location”.Go to the udcap-bin-win64 folder.Right-click ucap_overlay.exe → Run as Administrator.Check if the glove icon is detected. ③ If There is No Gray IconCheck whether UDCAP plugin is enabled in SteamVR:Go to: SteamVR → Settings → Startup/Shutdown → Add-ons.Check if udcap plugin is listed and enabled. ④ If UDCAP Plugin is MissingRestart the UDCAP software.Check if the plugin path is correctly set:Locate the UDCAP installation directory (the folder containing ucap).Copy the ucap folder to: SteamVR installation directory → drivers folder (e.g., C:\Program Files (x86)\Steam\steamapps\common\SteamVR\drivers).Restart both UDCAP software and SteamVR. ⑤ If the Add-on Exists but Gloves Still Don’t Show UpGo to: SteamVR → Settings → Startup/Shutdown → Add-ons.Disable any other add-ons of the same type (e.g., other hand tracking or skeletal driver plugins).Add-on conflicts may cause detection failures. ✅ Final RecommendationAlways restart SteamVR and UDCAP software after making any changes.If the problem persists, record your steps and software versions, and contact technical support.

show in【Meta Quest Headsets: Controller Tracking Plan Settings】

show in【Meta Quest Headsets: Controller Tracking Plan Settings】

Cause: Switching commands are lost due to low signal strength or excessive interference on the current channel.Solution: Move the glove as close as possible to the Wireless Receiver. Only attempt channel switching when the signal strength indicator turns green.CAUTION: Operations that severely impact signal strength: a. If using a USB hub with multiple Wireless Receivers: → Ensure the hub has dedicated power supply → Verify rated voltage for all USB ports b. Excessive Wi-Fi 2.4GHz signals in the operating environment.

In shooting games like Half-Life: Alyx, the trigger input is analog—meaning the game detects how much the trigger is pressed, not just whether it's pressed or not. It simulates the physical feel of a real trigger pull.When firing rapidly, if the trigger does not fully return to its initial position after each shot, the game may fail to register the next pull, resulting in missed shots, commonly referred to as "input dropping".✅ Recommended Solution: We recommend reducing the “Trigger Threshold” in the UDCAP driver settings. Set the trigger activation range (from touch to full press) to within 10%.This allows each quick press to register with less movement, making the trigger input more responsive and minimizing input loss during rapid firing.

Please refer to the 【SteamVR Input Remapping Tutorial】 section.

Go to UDCAP → Settings and set the Controller Priority to [HIGH].

When the index finger is naturally bent, pushing the joystick left may result in an upward/downward force angle, causing non-pure horizontal input detection.Solution: SteamVR Joystick Calibration StepsAccess Calibration Interface:Launch SteamVR and ensure the controller is connected.Navigate to SteamVR → "Settings" → "Controllers" → "Edit THUMBSTICK Settings".**Adjust Finger Posture:**Wear the glove normally and position the index finger in its common operating posture (e.g., slightly bent to mimic in-game usage).**Calibrate Joystick Direction:**Select the controller to calibrate (Left/Right).Hold the trigger button to enter calibration mode.Follow prompts to push the joystick toward your perceived **"true upward"** direction at least 5 times (maintain consistent force direction).

Recalibrate the joystick. For details, see the [Software Features → Joystick Calibration] section.

Joystick connection cable is installed incorrectly. Make sure the UDCAP logo is facing the same direction (either both facing up or both down).show in [Peripheral Installation Guide]

Launch Steam as administrator.If there is no vibration in-game, make sure vibration feedback is enabled in the game settings. For example, in VRChat: Settings → Accessibility → Vibration Feedback → Enable it.

If you're using a Pico or Quest headset, run Udcap_overlay.exe as administrator.show in [Meta Quest Headsets] If you're using Lighthouse tracking, make sure your trackers (e.g. Vive Tracker 3.0) are set to “held in hand” and assigned to left/right hand.show in [Lighthouse Tracking Plan]

Switch to a channel with less interference. You can view channel signal strength in the switching interface. For details, see the [Firmware Update & Channel Switching] section. Ensure that the left and right gloves are set to different channels.Use an extension cable to keep the signal receiver at least 60cm away from the computer case.Note: Actions that severely affect signal strength:a. If you're using multiple receivers on a USB HUB, make sure the HUB is externally powered and provides stable voltage to each USB port.b. Too many 2.4GHz Wi-Fi signals nearby can cause interference.

Please refer to the [Firmware Update & Channel Switching]section. The gloves need to be re-paired.