UDCAP VR Gloves FAQs

1. The driver update failed.

Please start the driver as administrator.

2.Jamming of the glove and significant delay in the operation

A：Open the UDCAP driver and move the mouse over the glove icon to display the UDCAP glove number, power level, frame rate (FPS), and current channel number.The frame rate (FPS) is not affected when it is above 100+.

If the frame rate (FPS) is too low, use the channel switching function.

Solution 1: Use an extension cord

Use extension cords to avoid physical proximity between signal receivers and to avoid interference with various signals.

Solution 2: Channel switching (data cable connects to the Type-C port on the pinky side of the glove)

Menu - Firmware update - Switching channels. You can change the current connection channel (Range 0-99）

Note:

a. The cable needs to be connected to the Type-C connector on the pinky side of the glove in order to change the channel properly.

b. To ensure that the glove and receiver remain on the same channel value(Example: [Wireless channel value: 5] for [Left-handed glove] and [Left-handed receiver].) c. For best results, the larger the difference between the left and right hand channels, the better.

Switching receivers when the glove is not nearby may result in the receiver switching successfully, but the glove channel is still the same as the original channel.

Solution: Pairing

3. Unable to connect to steamVR

Check the SteamVR panel for a gray glove.If there is no dark glove icon,then you need to open steamVR settings - startup/shutdown-manage add-ons to turn on UDCAP driver recognition.Restart steamVR afterwards.

If the STEAM panel is indicated by a gray glove, then you need to

Your installation path \UdcapDriver\udcap\bin\win64 file in the UDCAP_overlay.exe file To find it: right mouse click on UdcapDriver icon, Properties.

Find the udcap folder inside the UdcapDriver folder. Once inside, open bin→win64 in turn.

Note: After successfully connecting to steamVR with the Quest headset, steamVR does not recognize gloves, and gloves cannot be used in place of the Quest joystick.You need to successfully connect to steamVR first and make sure the quest grip is working properly before you can open the gloves and turn on the Udcap driver. If that still doesn't fix it, you need to drive UDCAP_overlay.exe.

4. Glove receiver unrecognized

Open - Device Manager

Find the ports (COM and LPT) in Device Manager

Check that the port correctly recognizes USB-SERIAL CH340 and make sure that the device name is correct.(COM port names in parentheses are irrelevant)

If the port recognizes the signal receiver and the name is correct, please check if there are other software/devices occupying the port and causing the UDCAP driver to fail to recognize it.Please close the software that occupies the port, or restart the computer.

If the port recognizes the signal receiver, but the name is incorrect, the glove receiver driver needs to be reinstalled. You need to reinstall UDCAP, and after successful installation, you need to further click to install the receiver driver.

If the port fails to display a device, there may be a problem with the USB port and the USB socket needs to be replaced.

5. Gloves cannot be attached

Please check that the signal receiver and the glove are in the same channel. Refer to Channel Switch for details.

6. Joystick anomalies

The data cable is differentiated into positive and negative poles. When connecting, please make sure that the UDCAP icon on both ends of the cable is on the top or bottom at the same time.

7. How to recalibrate the joystick direction when the glove's joystick module misaligns due to finger bending?

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 Steps​

1. ​Access Calibration Interface:

   • Launch SteamVR and ensure the controller is connected.

   • Navigate to ​SteamVR → "Settings" → "Controllers" → "Edit THUMBSTICK Settings".

   
2. ​**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).

3. ​**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).

8. Trackpad mis-touched, resulting in XXX game not being able to be played properly.

This issue needs to be resolved by modifying the mapping.In SteamVR, Settings - Controllers - Manage Controller Bindings-

After selecting the game to be changed

The following is an example of ALYX.

9. In shooting games such as ALYX, continuous shooting is swallowed by the operation and other related situations.

The in-game trigger is ranged. The longer the range, the greater the magnitude of the snapping motion of the index finger. In the event that the in-game trigger fails to recover correctly, you can't fire the gun, you can't shoot the bullets, and you get what looks like “key swallowing”. It is recommended to shorten the threshold from touch to full firing to between 10% in the UDCAP driver. This way, when firing quickly, the index finger can be snapped with a small amount of movement, making it possible to fire the gun more quickly. As shown in the picture:

10. I'm using the XX grip positioning method, but I can't straighten my arms in VRchat.

Settings - Open the full settings menu - Tracking & IK - Adjust the armchair-height ratio.

11. VRC model character hand jam, not smooth enough.

1. VRChat - Settings - Controls - Enable "Avatar Use Finger Tracking"

1. VRChat - Settings - Avatar - General Avatar Settings - Disable "Avatar Gestures"

12. Virtual Desktop (VD) Streaming Setup Guide

If you are using Virtual Desktop (VD) for streaming, please ensure the following settings are enabled in your SteamVR settings for the best experience:

13. Frequent Channel Switching Failures

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.