Unit PaHub v2.1
SKU:U040-B-V21
Description
Unit PaHub v2.1 is an I2C multiplexer unit that uses the PCA9548AP chip solution to expand a single I2C interface into six channels. By selecting different channels, it allows multiple devices with the same or different I2C addresses to coexist on the same I2C bus (switching via polling channels). The module is equipped with an onboard DIP switch to easily adjust the I2C address of Unit PaHub v2.1, supporting multi-unit cascading to connect more I2C devices. Compared to its predecessor, it offers greater flexibility and scalability in scenarios where multiple I2C devices are used in parallel. This product is suitable for scenarios where multiple I2C devices are used simultaneously.
Features
- I2C HY2.0-4P PORTA expansion
- Allows multiple nesting
- 6 extended Grove ports
- DIP switch for I2C address switching
- LEGO-compatible holes
Includes
- 1 x Unit PaHub v2.1
- 1 x HY2.0-4P Grove cable (20cm)
Applications
- I2C expansion
Specifications
| Specification | Parameter |
|---|---|
| I2C Multiplexer IC | PCA9548AP |
| Communication Protocol | I2C: 0x70~0x77 (default: 0x70, adjustable via DIP switch) |
| Operating Temperature | 0 ~ 40°C |
| Product Size | 48.0 x 24.0 x 10.8mm |
| Product Weight | 7.3g |
| Package Size | 138.0 x 93.0 x 11.8mm |
| Gross Weight | 12.3g |
Learn
Supports modifying the device address via the DIP switch. Users can adjust the I2C address by configuring the corresponding truth table settings.
Schematics
PinMap
Unit PaHub v2.1
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
Model Size
Datasheets
Softwares
Arduino
Video
Product Comparison
| Product Compare | Unit PaHub v2.1 | Unit PaHub2  | Unit PaHub  |
|---|---|---|---|
| Chip Solution | PCA9548A | PCA9548A | TCA9548A |
| I2C Address Change Method | DIP switch | Onboard resistor soldering | Onboard resistor soldering |
| Address | 0x70~0x77 (default: 0x70) | Default 0x70 | Default 0x70 |