Description The M5Stack DMX Unit is a compact DMX512 control unit for DMX-512 data transmission in lighting and stage-control systems. It integrates the CA-IS3092W isolated RS-485 transceiver, providing up to 5kVrms electrical isolation for more dependable serial communication between an M5 host and DMX equipment. Built around an XLR-3 female interface and a Grove serial connection, the M5Stack DMX Unit lets developers add DMX output to controllers without designing a separate interface board. The onboard 120 Ohm terminal resistor switch helps the DMX512 control unit match bus impedance and reduce signal reflection on long lighting runs. For stage lighting control, architectural lighting, dimmer control, and color-light installations, this isolated RS-485 transceiver design keeps the M5Stack DMX Unit small while protecting the communication side from electrical noise. The DMX512 control unit is especially useful when a Grove-based prototype needs a rugged XLR-3 DMX connector. The official MP4 product video is embedded directly after this Description section so customers can review the M5Stack DMX Unit before the feature and specification details. Features CA-IS3092W isolation: the isolated RS-485 transceiver provides up to 5kVrms isolation protection. DMX512 support: this DMX512 control unit is designed for DMX-512 data transmission scenarios. XLR-3 female interface: the front connector makes it easy to connect common DMX lighting equipment. Grove serial interface: the M5Stack DMX Unit communicates with an M5 host through UART RX and TX pins. 120 Ohm terminal switch: enable bus matching at the end of an RS-485 line to reduce reflections. Compact Unit form factor: the module fits small control panels, portable lighting tools, and rapid prototypes. Signal Protection The isolated RS-485 transceiver helps separate the controller side from the DMX line. This makes the M5Stack DMX Unit a practical choice for prototypes that connect to external lighting devices. Specifications Communication Protocol DMX512 Isolated Transceiver CA-IS3092W Isolation Voltage 5kVrms Data Transfer Rate Up to 500Kbps; DMX protocol fixed rate: 250Kbps Bus Communication RS-485 half-duplex Host Interface HY2.0-4P Grove, serial communication Terminal Resistor 120 Ohm switchable termination DMX Interface XLR-3 female Operating Temperature 0 to 40 C Product Size 51.6 x 24.0 x 32.0mm Product Weight 14.5g Package Size 138.0 x 93.0 x 33.0mm Gross Weight 20.0g Applications Stage lighting control: build a Grove-based DMX512 control unit for fixtures and consoles. Landscape lighting: connect the M5Stack DMX Unit to outdoor or architectural lighting controllers. Dimmer control: use the isolated RS-485 transceiver for serial DMX dimmer links. Color light control: prototype RGB and effect-light control with a stable XLR-3 interface. Lighting test tools: create portable test transmitters for DMX512 fixtures and wiring checks. Product List 1 Unit DMX 1 HY2.0-4P Grove cable (20cm) Other Content Integration Notes Connect the Grove cable to a UART-capable port and route the DMX line through the XLR-3 female connector. The pin map uses GND, 5V, UART_RX, and UART_TX, allowing the M5Stack DMX Unit to work as a serial DMX512 control unit in M5Stack projects. Termination Guidance Use the 120 Ohm resistor switch when the module is at the end of the RS-485 bus. Proper termination helps the isolated RS-485 transceiver maintain cleaner signaling and improves reliability in lighting-control wiring. Schematic Reference The schematic reference helps developers review the CA-IS3092W, XLR-3 connector, Grove interface, termination circuit, and serial routing before integrating the module into a custom controller. Resources Official M5Stack product documentation Official MP4 product video CA-IS3092W isolated RS-485 transceiver datasheet Unit DMX Arduino library Unit DMX UiFlow2 documentation FAQ What is the M5Stack DMX Unit used for? The M5Stack DMX Unit is used for stage lighting control, landscape lighting, dimmer control, color-light control, and DMX512 test tools. Does this DMX512 control unit use an isolated interface? Yes. The DMX512 control unit integrates a CA-IS3092W isolated RS-485 transceiver with up to 5kVrms isolation. What connector does it use for DMX equipment? It uses an XLR-3 female connector for DMX device connection. What is included in the package? The package includes 1 x Unit DMX and 1 x HY2.0-4P Grove cable (20cm). Is there an official video? Yes. The official MP4 video is embedded immediately after the Description section, and the media gallery remains image-only.
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