M5Stack Extend I/O Unit 2 (STM32F0)

M5StackSKU: RB-Mst-287
Manufacturer #: U011-B

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  • M5Stack Extend I/O Unit 2 (STM32F0)
  • Offers an 8-channel input and output expansion
  • Based on STM32F030 main controller
  • Provides RGB LED control and SERVO control (PWM)
  • Can mount multiple EXT.IO2 UNITs
  • Communication interface: I2C

The M5Stack Extend I/O Unit 2 (STM32F0) is an IO extended unit, based on the STM32F030 main controller, using the I2C communication interface and providing 8 IO expansions. Each IO supports independent configuration of digital I/O, ADC, SERVO control, and RGB LED control modes. Supports configuration of device I2C address, which means that users can mount multiple EXT.IO2 UNITs on the same I2C BUS to extend more IO resources. Suitable for multiple digital/analog signal acquisition, with lighting/servo control applications.

  • 1x EXT.IO2 Unit
  • 1x HY2.0-4P Cable


  • 32 x 24 x 11 mm
  • IO interface PIN spacing: 2.54 mm
  • MCU: STM32F030
  • I2C Address: 0x45 (default)
  • Number of IO extensions: 8
  • IO Support Mode: Digital input/output, ADC, SERVO control, RGB LED control
  • IO Input/Output Level Support: 3.3 V
  • Communication interface: I2C
  • Weight: 5 g

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