Arduino Nano R4
The newest Arduino Nano — Renesas RA4M1 ARM Cortex-M4F at 48MHz with 256KB flash, 32KB SRAM, Qwiic connector, RGB LED, castellated pins, and USB-C in an ultra-compact 43×17mm form factor. No wireless, pure embedded power.
$12.20
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Specifications
Components
Renesas RA4M1 ARM Cortex-M4F at 48MHz with FPU, DSP, 256KB flash, 32KB SRAM, 14-bit ADC, 12-bit DAC, CAN 2.0B.
Bus Interfaces
GPIO Map
Overview
The Arduino Nano R4 is the latest addition to the Nano family, bringing the same Renesas RA4M1 ARM Cortex-M4F processor from the UNO R4 series into the smallest Arduino form factor yet at 43×17mm. With 256KB flash, 32KB SRAM, a 12-bit DAC, CAN bus, and on-chip op-amp, it delivers modern 32-bit ARM processing in a board designed for integration.
Key design features include castellated pins for direct surface-mount soldering onto custom PCBs, single-sided component placement for easy reflow, a built-in Qwiic/STEMMA QT connector for sensor daisy-chaining, and a programmable RGB LED. USB-C provides power and programming.
The Nano R4 is ideal for production-ready embedded applications where the full UNO R4 is too large, and for makers who want the latest ARM Cortex-M4F processing without wireless overhead. It maintains compatibility with the Arduino IDE and the growing RA4M1 library ecosystem.
Use Cases
3Educational Platform
Development boards suitable for teaching programming, electronics, and embedded systems concepts.
IoT
Internet of Things applications including connected sensors, actuators, and smart devices that communicate over WiFi, BLE, LoRa, or other wireless protocols.
Industrial IoT
Build robust industrial IoT solutions using CAN bus, RS-485, Modbus, and wired Ethernet interfaces.
Resources
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