Uploaded January 2026 | Updated September 2026, 3 weeks ago

---

#M5StackNew 🎉 Unit ChainBus
Unit ChainBus is a Chain series communication protocol conversion unit. It integrates an STM32G031G8U6 chip and uses a UART daisy-chain communication protocol to achieve multi-device chain connection.

✨Features
✅STM32G031G8U6 core MCU
✅UART daisy-chain communication protocol, supporting Chain series single / multiple device chain connections
✅1 x RGB LED for status indication
✅1 x HY2.0-4P multifunction expansion interface for Unit series devices
✅2 x HY2.0-4P UART interfaces for Chain series devices

🛒 Get Yours:
Shopify: https://biturl.top/NB7Rze

#M5Stack #M5StackNew #IoT #Hardware #Makers #ChainSeries #ChainBus #CommunicationProtocol #STM32