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Unit Pahub v2.0

SKU:U040-B

Description

Unit Pahub v2.0 is an I2C device splitter that can expand a single I2C HY2.0-4P interface into six channels, and allows mounting slave devices with the same I2C address (by controlling polling of different channels to enable co-existence of devices with identical addresses). It is embedded with a PCA9548AP-I2C multi-channel switch IC, supporting the expansion of 6 sets of I2C devices.

Features

  • I2C HY2.0-4P PORTA expansion
  • 2 x LEGO compatible holes
  • Allows multiple nesting
  • 1-6 expansion

Includes

  • 1 x Unit Pahub v2.0
  • 1 x HY2.0-4P Grove Cable (20cm)
  • 1 x HY2.0-4P Grove 连接线 (20cm)

Applications

  • I2C expansion

Specifications

Specification Parameter
Channel Control IC PCA9548AP
Communication Protocol I2C @0x70 (modifiable via resistors A0, A1, A2)
Product Size 48.0 x 24.0 x 10.8mm
Product Weight 7.5g
Package Size 138.0 x 93.0 x 11.8mm
Gross Weight 13.0g

Learn

Note: During operation, the splitter implements co-existence of same address devices by controlling and polling different channels. Please pay attention to the channel order when programming.

According to the schematic and PCA9548AP datasheet, this Unit can modify the I2C address of the device by controlling the logic level combinations of pins A0~A2 (default address is 0x70).

Three SMD resistor pads are reserved on the PCB of the Unit for A0-A2, as shown in the figure below.

After soldering a 0Ω resistor, the corresponding pin level will change from low to high. The logic level combinations of the pins and their corresponding I2C addresses are shown in the table below.

Schematics

PinMap

HY2.0-4P

HY2.0-4P Black Red Yellow White
PORT.A GND 5V SDA SCL

Datasheets

Model Size

Softwares

Arduino

UiFlow1

Easyloader

Easyloader Download Note
Unit Pahub v2.0 Test Easyloader download /