Arduino Launches New Modulino Hub & Extender to Shatter I2C Hardware Limits

Arduino Launches New Modulino Hub & Extender to Shatter I2C Hardware Limits

Arduino has officially expanded its hardware ecosystem with a major dual-product launch aimed straight at a classic maker headache: I2C bus limitations.

With the sudden release of the Modulino Hub and the Modulino Extender, Arduino is giving developers the official tools to build larger, more complex sensor networks without running into address conflicts or signal degradation.

Here is everything you need to know about Arduino’s latest hardware drop.

The Launch: Upgrading the Modulino Ecosystem

Originally introduced alongside the Arduino Nano Matter, the Modulino family is Arduino’s take on compact, plug-and-play internal modules. This latest launch takes the ecosystem beyond simple sensors and introduces pure infrastructure upgrades designed to scale up your projects.

Modulino Hub: Massively Expand Your Device Capacity

When building complex setups, you often hit an address bottleneck—connecting multiple identical sensors usually breaks the I2C bus. Arduino's new Hub resolves this by acting as an intelligent traffic controller.

  • 8 Isolated Channels: Splits a single I2C port into eight independent branches.
  • Massive Scaling: By nesting these hubs, Arduino enables you to control up to 64 I2C devices simultaneously.
  • Zero Software Overhead: You don't need to rewrite your address logic. The hardware manages the routing, making it completely transparent to your code.

Modulino Extender: Go Long Over Ethernet (Up to 30m)

Standard I2C signals degrade rapidly over short distances. To solve this, Arduino integrated the LTC4311 I2C accelerator chip into the new Modulino Extender, turning weak signals into long-range lines.

  • 30-Meter Range: Safely run your I2C lines up to 30 meters (~100 feet) at a reliable 100 kHz.
  • Standard Cabling: Utilizes standard, low-cost Cat5e or Cat6 RJ45 ethernet cables to bridge the distance.
  • Plug-and-Play Architecture: No complex software timing adjustments or external libraries required.
  • Form Factor & Compatibility

True to Arduino's latest design philosophy, both boards are built to slot seamlessly into existing workflows:

  • Solderless Integration: Equipped with standard Qwiic/STEMMA QT connectors for instant wiring.
  • Ultra-Compact: Micro-sized at just 25.36 mm x 41 mm.
  • Universal Support: Built to pair perfectly with the UNO R4 WiFi, the Nano series (via the Connector Carrier), and the freshly revealed Nesso N1 board.
  • Dual-Language Ready: Fully compatible with both standard Arduino C++ and MicroPython.

Availability

The Modulino Hub and Extender are officially available today on the Arduino Store and through authorized global distributors. If you've been putting off a large-scale automation, robotics, or smart-agriculture build due to wiring limits, Arduino just cleared the runway.

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