(U212)Unit ChainBus

Unit ChainBUS (STM32G031)

SKU : U212
Shop : https://shop.m5stack.com/products/unit-chainbus-stm32g031?ref=langship
Shop(Japan) : https://www.switch-science.com/products/11002
Document : https://docs.m5stack.com/en/unit/Unit_ChainBus
Release Date(probably) : 2026-01-09

Unit ChainBus is a Chain series communication protocol conversion unit. It integrates an STM32G031G8U6 chip and uses a UART daisy-chain communication protocol to enable chained connections of multiple devices. It supports multiple protocol interface conversions, allowing various peripherals to be expanded on the same bus, and integrates hardware control and data interaction capabilities.

Datasheet

Unit ChainBus Schematics PDF : SCH_ChainBus_SCH_Main_V1.0_20250704_2025_11_28_11_09_00.pdf
Unit ChainBus Model Size PDF : U212-model-size-unit-chainbus.pdf
Unit ChainBus Protocol : M5Stack-Unit-ChainBus-Protocol-EN.pdf