M5Stack Chain Encoder Rotary Encoder with STM32G031 and Button Function
The M5Stack Chain Encoder is a rotary encoder input module from the Chain series with an integrated STM32G031G8U6 microcontroller. The AB rotary encoder detects rotation direction and pulse counting and also features a button function by pressing the knob. A programmable RGB LED (WS2812B) allows for status displays and interactive feedback. The cap of the encoder features building block-compatible mounting holes for creative structural connections. The module communicates via a UART serial cascading protocol at 115200 bps and can be connected to other Chain devices through two HY2.0-4P expansion interfaces. The included Chain Bridge Connector enables easy integration into existing Chain systems. With a power consumption of 22.51 mA with the RGB LED activated and an operating temperature of 0 to 40°C, the Chain Encoder is suitable for human-machine interaction and smart home controls.
Recommended accessories:
- M5Stack Chain Dual Key with ESP32-S3 or other M5Stack Cores
- M5Stack Grove Cable
Features:
- AB rotary encoder with direction detection and pulse counting for precise input
- Integrated button function by pressing the knob for additional interaction
- STM32G031G8U6 microcontroller for reliable signal processing
- Programmable WS2812B RGB LED for status display and visual feedback
- Building block-compatible mounting holes on the rotary knob cap
- UART daisy-chain protocol at 115200 bps for cascading connections
Application examples:
- Menu navigation in user interfaces
- Value setting with confirmation function
- Smart home controls with rotary knobs
- Robotic controls with incremental input
- Audio projects with volume and confirmation
Documentation:
- M5Stack Wiki
- Official M5Stack Forum
Technical data:
- Manufacturer: M5Stack
- Manufacturer SKU: U207
- MCU: STM32G031G8U6
- Input: AB rotary encoder with button
- Input voltage: DC 5V
- Communication: UART 115200 bps 8N1
- Interfaces: 2× HY2.0-4P
- RGB LED: 1× WS2812B
- RGB power consumption: 22.51 mA
- Operating temperature: 0 ~ 40°C
- Product dimensions: 23.9 × 23.9 × 29.8 mm
- Product weight: 10 g
- Package dimensions: 135 × 90 × 25 mm
- Gross weight: 14 g
Scope of delivery:
- 1× M5Stack Chain Encoder
- 1× Chain Bridge Connector
