Unit Pahub

SKU:U040

Description

Unit Pahub is an I2C device splitter that can expand a single I2C HY2.0-4P interface to six channels, allowing the connection of multiple I2C devices with the same address (by controlling the polling of different channels to enable coexistence of devices with the same address). It features an embedded TCA9548A-I2C multi-channel switch IC, supporting the expansion of up to 6 groups 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
1 x HY2.0-4P Grove cable (20cm)

Applications

I2C expansion

Specifications

Specification	Parameter
Protocol	I2C:0x70 (can be modified via resistors A0, A1, A2)
Net Weight	7g
Gross Weight	19g
Product Size	48 x 24 x 12mm
Package Size	67 x 53 x 12mm

Learn

Note: During operation, the splitter allows devices with the same address to coexist by controlling the polling of different channels. Please pay attention to the channel sequence during programming.

According to the reference schematic and the TCA9548A datasheet, this Unit can modify the I2C address of the device by controlling the level combination of the A0~A2 pins. (The default address is 0x70).

The PCB of the Unit has three reserved positions for surface-mount resistors, labeled A0-A2, as shown below.

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

Schematics

PinMap

Unit Pahub

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

Datasheets

TCA9548A

Model Size

Softwares

Arduino

Unit Pahub Test Example

UIFlow 1.0

UIFlow 1.0 Docs

EasyLoader

Easyloader	Download Link	Remarks
Unit Pahub Test Easyloader	download	/