Nano R4 merges Arduino’s signature ease of use with the powerful Renesas RA4M1 microcontroller, enabling effortless scaling from prototyping on the UNO R4 to production-ready applications.
Compact and versatile, the Nano R4 maintains the same pinout as other boards in the Nano family and features castellated pins for easy hardware integration, an on-board Qwiic connector for rapid sensor and peripheral expansion, and a programmable RGB LED for intuitive system feedback. Its single-sided component design makes it ideal for space-constrained products and SMD soldering on custom carrier boards, ensuring a seamless transition from lab testing to real-world deployment.
Thanks to its compatibility with familiar Arduino tools and libraries (including those for the Arduino UNO R4 Minima), the Nano R4 offers developers and designers a streamlined path to build compact, connected, and production-ready solutions.

Key benefits

• Effortless transition from prototyping to production: Leverage the RA4M1 microcontroller already trusted in the UNO R4 family, with minimal code adjustments needed.
• Compact, production-ready design: Tiny 4.3 x 1.7 cm footprint, castellated pins, and single-sided components facilitate easy integration into custom hardware.
• Easy expansion: The built-in Qwiic connector and additional 5V I2C port allow seamless connectivity to a wide range of sensors and actuators, including Modulino nodes.
• Customizable feedback: Use the programmable RGB LED to indicate system states for faster debugging and smarter user interaction.
• Flexible, familiar platform: Enjoy Arduino’s rich ecosystem, intuitive development environment, and robust community support.

Application examples to explore

• Embedded industrial systems: Thanks to its compact design and production-ready features, the Nano R4 is ideal for creating embedded industrial solutions where space is limited but reliability is critical.
• Home automation: With easy sensor and actuator integration, the Nano R4 enables fast development of connected and smart products that make your daily life easier.
• Prototypes scaling to production: By carrying forward the RA4M1 microcontroller already featured in the UNO R4 family, the Nano R4 allows developers to prototype advanced edge computing projects and transition them into compact production designs with minimal rework.
• Compact robotics and automation projects: The Nano R4’s small footprint and robust connectivity options make it perfect for miniaturized robotics, autonomous devices, and automated industrial systems requiring reliable, flexible control.
• Custom hardware platforms: For designers seeking hardware customization without starting from scratch, the Nano R4’s castellated design simplifies integration into bespoke PCBs for specialized products in industrial, commercial, or consumer sectors.

Technical Specifications