The Chain Encoder is a rotary encoder input node in the Chain series. It integrates an AB rotary encoder, supporting rotation direction detection and pulse counting. The knob center supports button input. It also integrates a programmable RGB LED for status indication and interactive display. The encoder cap features a for -compatible hole structure, enabling more structural connections. Suitable for human-computer interaction, smart home control, and other applications. The Chain Encoder integrates the STM32G031G8U6 core controller and adopts the UART serial port cascading communication protocol. Through two HY2.0-4P expansion interfaces, it can expand to more Chain series devices and build richer interactive applications. Specifications: MCU: STM32G031G8U6 Input Power: DC 5V Communication Method: UART 115200bps@8N1 Interface Specifications: 2x HY2.0-4P RGB LED: 1x WS2812B RGB Power Consumption: 22.51mA Operating Temperature: 0~40°C Color: As Shown Material: plastic Package Contents: 1 * Chain Encoder 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.