Faces QWERTY is a full-featured keyboard panel compatible with FACE_BOTTOM, featuring 35 keys. Each key can be reused through key combinations to output different characters. It integrates an MEGA328 processor internally and operates in slave mode via the I2C communication protocol (0x08). The "sym" and "Fn" function keys are used for shift switching, while the "aA" function key is used for case switching. A single click on the corresponding function key activates single-character input with the indicator light on, while a double click makes the indicator light blink, enabling continuous input. Clicking again restores the previous state.
