Chain Mono — 8×8 Monochrome LED Dot Matrix Node
Chain Mono is an LED display node from the M5Stack Chain series, featuring an 8×8 monochrome LED dot matrix unit. It supports independent pixel control, batch pixel writing, and fast full-screen buffer refresh. Built-in ASCII character generation, string scrolling, brightness adjustment, and multi-angle screen rotation enable diverse dynamic light and pixel animation effects.
Powered by an STM32G031G8U6 main controller, Chain Mono uses a UART serial daisy-chain communication protocol. Through two HY2.0-4P expansion interfaces, it can be extended with more Chain series devices to build richer interactive applications.
Features
- STM32G031G8U6 main controller
- 8×8 monochrome LED dot matrix display
- Built-in ASCII character generation and character drawing
- Independent pixel control and batch writing support
- 8-byte frame buffer with full-screen refresh
- Custom patterns and string scrolling — up to 256 characters per node
- 0°/90°/180°/270° screen rotation
- UART serial daisy-chain communication (115200bps @ 8N1)
- 2× HY2.0-4P expansion interfaces for daisy-chaining
Includes
- 1 × Chain Mono
- 1 × Chain Bridge
Applications
- Pixel light creations
- Desktop ambient lighting
- Creative light signage
- Smart device indicator lighting
Specifications
| Specification | Parameter |
|---|---|
| MCU | STM32G031G8U6 |
| Input Power | DC 5V |
| Communication | UART 115200bps @ 8N1 |
| Interface | 2 × HY2.0-4P |
| LED Color | White |
| Standby Power | DC 5V @ 8.13mA |
| Operating Power | DC 5V @ 22.29mA (max brightness, all on) |
| Operating Temperature | 0 ~ 40°C |
| Product Size | 24.0 × 24.0 × 16.0 mm |
| Product Weight | 6.2g |
| Package Size | 138.0 × 93.0 × 11.0 mm |
| Gross Weight | 13.2g |























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