# Arduino introduces Arduino_RouterBridge_ROS for seamless ROS 2 integration on VENTUNO Q

> **Key takeaway:** A new open-source library allows microcontrollers to act as native ROS 2 nodes using an RPC-based bridge.

**Published:** 2026-11-06T13:32:19+00:00 
**Source:** Arduino Official Blog 
**Category:** open-hardware 
**Canonical URL:** https://fosswire.org/news/arduino-introduces-arduinorouterbridgeros-for-seamless-ros-2.html 

## Summary
Arduino has unveiled the Arduino_RouterBridge_ROS library, designed to bridge the gap between high-level Linux-based navigation and real-time microcontroller I/O. The tool is specifically optimized for the VENTUNO Q board, which features a dual-brain architecture combining a Linux-capable MPU and a real-time microcontroller on a single PCB.

By utilizing an RPC protocol, the library allows developers to write ROS 2 nodes directly within Arduino sketches. This eliminates the need for manual serial parsing or complex custom middleware wrappers when connecting robotic sensors and actuators to a ROS 2 graph.

## Technical architecture of Arduino_RouterBridge_ROS
- **Communication Protocol:** The system utilizes an RPC (Remote Procedure Call) protocol built on top of MsgPackRPC to facilitate communication between the Python-based Linux side and the Zephyr-based microcontroller side.
- **Function Execution:** Developers can use `Bridge.provide()` to register callable functions on one processor and `Bridge.call()` to trigger them from the other, treating the MPU/MCU boundary like a single thread.
- **ROS 2 Node Capabilities:** The library provides a `ros2ino` namespace that enables full node functionality, including publishers, subscribers, services, and actions directly from the MCU firmware.
- **Middleware Independence:** The implementation is RMW agnostic, meaning it functions independently of the specific ROS Middleware vendor selected for the Linux host system.
- **API Design:** The interface uses a native C++ syntax that mirrors standard `rclcpp` patterns to reduce the learning curve for robotics engineers.

## Why it matters
This development simplifies the robotics development workflow by allowing real-time hardware control to exist natively within the ROS 2 ecosystem. It reduces the architectural complexity for engineers building autonomous mobile robots or precision arms using Arduino's dual-processor hardware.