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Product description: Arduino Modulino Hub - 8-channel I2C multiplexer - TCA9548ARGER - Qwiic - ABX00100
The Modulino Hub is a practical module that expands the I2C bus with eight independent channels . Thanks to the TCA9548ARGER chip, each connected sensor or module can operate on a separate I2C line, allowing for the convenient creation of complex projects without the hassle of duplicate addresses . The module uses Qwiic connectors , ensuring quick, tidy connections without the need for soldering signal wires. It's ideal for educational projects, IoT prototypes, measurement systems, and advanced multi-sensor designs. The Hub works with the Modulino library for Arduino and MicroPython , making it easy for both beginners and more experienced users to get started quickly.
Arduino Modulino Hub - 8-channel I2C multiplexer - TCA9548ARGER - Qwiic - ABX00100.
Modulino Hub will work wherever several or a dozen I2C devices need to be connected in one project.
Main features of Modulino Hub
- 8 independent I2C channels : allows you to connect multiple Qwiic devices to a single Arduino project
- TCA9548ARGER chip : responsible for switching I2C channels and isolating devices on separate buses
- Address conflict resolution : allows you to use multiple identical sensors with identical I2C addresses
- Qwiic connectors : provide quick connection without the need for soldering and without manually routing SDA, SCL, 3.3V and GND wires
- I2C address configurability : the module address can be set using solder jumpers in the range from 0x70 to 0x77
- Scalable design : allows you to connect up to eight Hub modules on one bus, obtaining up to 64 independent I2C channels
- Arduino Modulino Compatibility : Works with Modulino modules, Arduino IDE, Arduino CLI and Arduino Cloud
- Compact dimensions : the small board, measuring 41mm long and 25.36mm wide, fits easily into enclosures and prototypes
Modulino Hub pinouts, connectivity and compatibility
The Modulino Hub is equipped with a total of 10 Qwiic connectors – 2 inputs and 8 outputs . The input connectors are used to connect the module to a motherboard, such as the Arduino UNO R4 WiFi , Arduino UNO Q , or Arduino Nano boards using the Arduino Nano Connector Carrier . Eight output connectors allow you to connect sensors, actuators, and other I2C modules, with each device operating on a separate channel. Communication is via an I2C bus with a 3.3V logic level. All channels utilize 4.7kΩ pull-up resistors, which enhance communication stability and simplify integration with compatible Qwiic devices. The multiplexer's I2C address is hardware configurable using solder jumpers located on the board. The address range is 0x70 to 0x77 , allowing multiple Modulino Hub modules to be used in a single project. This solution allows for the creation of an extensive, structured I2C sensor network without address conflicts.
Pinout diagram.
The module makes it easier to expand existing projects without having to change the entire hardware architecture.
Programming the Arduino Modulino Hub I2C Multiplexer
The Modulino Hub can be programmed in the Arduino IDE , using the Arduino CLI, and using tools available in the Arduino ecosystem. The manufacturer provides the Modulino library , which supports the Arduino and MicroPython languages. The library simplifies the management of individual I2C channels and allows you to quickly start working with multiple sensors. In practice, programming involves selecting the appropriate multiplexer channel and then communicating with the I2C device connected to that channel. Beginners can use ready-made Arduino examples and documentation , while more advanced developers can customize the hardware configuration and module addresses to suit their project's individual requirements.
Modulino Hub technical specifications
- Main chip: TCA9548ARGER
- Communication interface: I2C via Qwiic connectors
- Number of channels: 8 independent I2C buses
- Number of Qwiic connectors: 10, including 2 inputs and 8 outputs
- Operating voltage: 3.3 V
- I2C Address: 0x70 to 0x77, hardware configurable via solder jumpers
- Address according to Arduino store data: 0x71
- Pull-up resistors: 4.7kΩ on all channels
- Current consumption with inactive channels: 1.5 mA
- Current consumption with active channels: 3.5 mA
- Compatible boards: Arduino UNO R4 WiFi, Arduino UNO Q, Arduino Nano 33 IoT, Nano 33 BLE, Nano 33 BLE Sense, Nano RP2040 Connect, Nano ESP32, Nano Matter, Arduino Nano Connector Carrier
- Supported environments: Arduino IDE, Arduino CLI
- Supported libraries: Arduino Modulino, Arduino Modulino MicroPython
- Dimensions: 41 x 25.36 mm
- Weight: 4.4 g
Contents of the set
- Modulino Hub
- 5 cm long Qwiic cable
Elements included in the set.
