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Product description: Unit ChainBUS - expansion module - STM32G031 - M5Stack U212
The M5Stack Unit ChainBus is a universal communication module designed for building distributed systems based on the M5Stack ecosystem. The STM32G031G8U6 microcontroller is responsible for protocol conversion and communication between devices using the UART ChainBus . The module allows you to connect multiple devices in a single communication chain , while also providing support for additional interfaces such as I2C, GPIO inputs and outputs, an ADC, and NVIC interrupts . The built-in firmware enables automatic device detection, reading unique UIDs , checking software versions, and monitoring correct operation via the heartbeat mechanism. Compatibility with UiFlow2 and the Arduino IDE makes integration with existing projects quick and easy, requiring minimal configuration.
Unit ChainBUS - expansion module - STM32G031 - M5Stack U212.
M5Stack Unit ChainBus is used wherever it is required to easily expand the number of devices communicating with one controller.
Main features of the module
- STM32G031G8U6 microcontroller : an efficient controller responsible for protocol conversion and communication management
- UART Chain Bus : allows daisy-chaining of one or more devices
- Multiple interface support : I2C, GPIO, ADC and NVIC available via expansion connector
- Two HY2.0-4P UART ports : separate Chain Bus input and output connectors
- HY2.0-4P expansion connector : allows connection of Unit series modules
- WS2812C RGB diode - device operating status indication
- Arduino IDE and UiFlow2 compatibility : easy application development
- Extensive bus functions : UID, software version, heartbeat and device detection support
Technical specifications of Unit ChainBUS
- Microcontroller: STM32G031G8U6
- Communication: UART 115200 bps (8N1)
- Protocol: Chain Bus UART
- Interfaces: 2 x HY2.0-4P UART, 1 x HY2.0-4P multi-function
- Expansion interface: I2C, GPIO, ADC, NVIC
- LED: 1 x WS2812 RGB
- Bus functions: UID, device discovery, version reading, heartbeat
- Development platforms: Arduino IDE, UiFlow2
- Current consumption: 17.72 mA at 3.3 V (maximum brightness of RGB white light)
- Dimensions: 29.8 x 24 x 8 mm
- Weight: 5.9 g
Contents of the set
- 1x M5Stack Unit ChainBus
- 2x HY2.0-4P Grove Cable - 5 cm
The module allows you to build scalable automation systems and simplifies the integration of various hardware interfaces.
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