DPAD-numeric keyboard-Bluetooth dual mode-CH582M

Using the CH582M chip, a numeric area keypad containing knobs is produced, which can be connected to USB and Bluetooth.
Functions include: 1. Digital area buttons, one knob, and three indicator lights
2. Keys and macros can be changed in real time through the host computer
3. Contains 16 configurable light effects
4. Bluetooth low power consumption: 2mA when Bluetooth is connected, 0.1 when turned off mA. Paired with a 2000mAh battery, it can be used for a long time.
Questions:
1. The impedance of the Bluetooth antenna is average and can only be within 2m from the host. If it is too far away, it will be lost (please ask for the verified width and spacing of the Bluetooth impedance line of the 1.6mm double-layer board!)
DIY sharing: The firmware is still being updated and optimized, specific host computer The functions can be found on the home page for another small keyboard. The firmware currently developed is a universal firmware, which can be immediately configured to a new keyboard by configuring the key pin matrix and light coordinate matrix.