Unit Byte Button is an 8-button touch switch input unit equipped with 8 button inputs and 9 WS2812C RGB LEDs. It uses the STM32 microcontroller and supports I2C communication. The board includes two Port A interfaces and supports cascading multiple Unit ByteButton modules, making it suitable for complex systems. It can achieve button input detection and dynamic lighting feedback, ideal for smart home control, gaming devices, educational platforms, industrial status displays, and interactive exhibitions. Note:due to different production batches, the printing screen printing/appearance is different, which does not affect the use. Specifications: 8 button inputs 9 WS2812C RGB LEDs STM32 microcontroller I2C communication interface Applications: Smart home control panels Gaming or entertainment device controllers Educational and laboratory development platforms Status control and feedback devices Portable device debugging tools Interactive exhibitions or scene controllers User interface for small instruments Colour:Gray Material:Plastic Package Contents: 1 x Unit ByteButton 1 x HY2.0-4P cable(The color is random, and the designation is not accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.