Unit EXT.IO2
Description
Unit EXT.IO2 is an IO expansion unit developed based on the STM32F030 main controller, using an I2C communication interface, providing 8-channel IO expansion. Each IO channel supports independent configuration of digital input/output, ADC, SERVO control, and RGB LED control modes. It supports configuring the device's I2C address, which means users can mount multiple Unit EXT.IO2 units on the same I2C bus to expand more IO resources. It is suitable for applications such as multi-channel digital/analog signal acquisition and light/servo control.
Features
- 8-channel input/output expansion:
- Digital input/output
- ADC input
- SERVO control (PWM)
- RGB LED control
- I2C communication interface:
- Supports I2C address configuration
Includes
- 1 x Unit EXT.IO2
- 1 x HY2.0-4P Grove connection cable (20cm)
Applications
- IO expansion
- Servo control
- Multi-channel light control
- Multi-channel analog signal acquisition
Specifications
| Specification | Parameter |
|---|---|
| MCU | STM32F030F4P6 |
| I2C Address | 0x45 (default) |
| Number of IO Expansions | 8 |
| IO Interface Pin Spacing | 2.54mm |
| IO Supported Modes | Digital input/output, ADC, SERVO control, RGB LED control |
| IO Supported Input/Output Level | 3.3V |
| Product Size | 32.0 x 24.0 x 10.2mm |
| Product Weight | 5.0g |
| Package Size | 138.0 x 93.0 x 11.2mm |
| Gross Weight | 10.0g |
Schematics
1/1
PinMap
Unit EXT.IO2
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
Model Size
Softwares
Arduino
- Unit EXT.IO2 ADC Input Example
- Unit EXT.IO2 Digital Input/Output Example
- Unit EXT.IO2 RGB LED Control Example
- Unit EXT.IO2 Servo Control Example
UiFlow1
UiFlow2
Internal Firmware
| Firmware Version | Update | Protocol |
|---|---|---|
| v1 | First Release Version | Unit EXT.IO2 I2C Protocol v1 |
| v3 | 1. Add PWM mode 2.Add I2C IAP upgrade function | Unit EXT.IO2 I2C Protocol v3 |
M5 DAPLink
If you don't have the STM32 downloader tool, you can refer to the
M5 DAPLink
tutorial and use the Core2 or CoreS3 as a programmer to complete the firmware update for the device.
Protocol
