M5Stack Chain Mechanical Key Button (STM32G031)

Chain Key – Intelligent Single-Button Node for M5Stack Chain Series The Chain Key is a compact yet powerful input node in the M5Stack Chain ecosystem. Designed with a hot-swappable mechanical keyboard blue tactile switch ⌨️ and integrated programmable RGB LEDs 🌈, it delivers both precision and visual feedback for interactive applications.

Powered by the STM32G031G8U6 core MCU ⚡, the Chain Key communicates via UART cascading protocol, ensuring seamless integration with other Chain series modules. With two HY2.0-4P expansion interfaces, users can easily extend functionality and build complex, scalable systems for smart home control 🏠 and human-machine interaction 🤝.

Features

• 🔗 M5Stack Chain series compatibility

• 🖲️ Single-button input with tactile feedback

• ⚡ STM32G031G8U6 core MCU

• 🔄 Hot-swappable mechanical blue switch

• 🌈 Dual RGB LED indicators

• 📡 UART cascading communication protocol

• 🔌 2x HY2.0-4P expansion interfaces

Includes

• 1 × Chain Key

• 1 × Chain Bridge

• 1 × Keycap Sticker

Applications

• 🏠 Smart home control

• 🤖 Human-machine interaction

Specifications