The overall functionality has been confirmed. This is a small, split, ortholinear keyboard with a trackball. With the current firmware settings, the right trackball controls cursor movement, and the left trackball controls scrolling. Specifications: ・Wireless ・ZMK Firmware ・40 keys ・Gasket mount (PORON foam) ・Choc V2 switch compatible ・18mm trackball ・17mm pitch ・Screwless design ・Bearing trackball case ・PAW3220 sensor x2 The switches used are Logitech GL tactile switches. Please consider the switches and keycaps as extras. The case and keycaps are made using Bambu Lab PLA Matte. The lithium-ion battery is 300mAh. (Handle with care.) Firmware: https://github.com/MeowCatpawkittie/zmk-config-Pyuron/tree/paw3220