ThumbsUp! Keyboards

ThumbsUp! Trackball v4 supports ZMK.Studio for the button configuration. ZMK.Studio Connection To connect to ZMK.Studio:  - connect trackball to computer with USB cable,  - in the Internet Browser navigate to https://zmk.studio/ A prompt will be shown:  Select USB, device selection window will open: Select Trackball v4, click Connect. Note that some applications may intercept COM ports (e.g. Cura 3D Slicer) and prevent ZMK connection to that device, showing an error message. Close all apps that may work with COM ports and try again. A prompt to unlock the device should/may appear, this is a ZMK security feature, protecting the trackball from the unauthorized re-configuration by malicious software: You need to press once a metal button labeled UNLOCK (or ZMK.Studio, depending on the board revision) on the middle board: After that ZMK.Studio screen should appear: To configure button - select layer, then the key, and then pick the desired action for that key: Changes ar...