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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 to six channels, and allows devices with the same I2C address to be mounted (achieved by polling different channels to allow same-address devices coexistence). It is embedded with a PCA9548AP-I2C multi-channel switch IC, supporting expansion for 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)

Applications

  • I2C expansion

Specifications

Specification Parameter
Channel Control IC PCA9548AP
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 achieves same-address device coexistence by controlling and polling different channels. Please pay attention to the channel order when programming.

Referring to the schematics and PCA9548AP datasheet, this Unit can modify the device I2C address by controlling the A0~A2 pin level combinations. (Default address is 0x70)

Three solder pads for chip resistors A0-A2 are reserved on the Unit’s PCB, as shown below.

After soldering a 0-ohm resistor, the corresponding pin will change from low level to high level. The pin level combination and its corresponding I2C address 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 /