We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small green circuit board with castellated edges, Qwiic connector, RGB LED, loose header pins

Arduino

Arduino Nano R4 RA4M1 48MHz 256KB 32KB Qwiic RGB 4.3×1.7cm

SKU CH-BXSW-4JTV6

A compact 4.3 × 1.7 cm development board with Renesas RA4M1 microcontroller, 48 MHz clock, 256 KB flash, 32 KB RAM, Qwiic connector and programmable RGB LED

  • Powerful 48MHz Renesas RA4M1 core drives advanced embedded tasks
  • 256KB flash and 32KB RAM support larger firmware and data buffers
  • Qwiic connector plus 5V I²C port simplify sensor and peripheral expansion
  • Programmable RGB LED gives instant visual feedback for debugging
  • 3 × 1.7 cm footprint with castellated edges fits tight enclosures and custom PCBs

Compact Arduino Nano R4 Board

The Arduino Nano R4 RA4M1 is a microcontroller board built for IoT edge devices and embedded development. It uses a Renesas RA4M1 processor running at 48MHz with 256KB flash memory and 32KB RAM. The board measures 4.3 × 1.7 cm and includes a Qwiic connector plus a 5V I²C port for sensor expansion. A programmable RGB LED provides visual feedback during testing and deployment.

Makers moving from prototype to production

This board suits developers who need the familiar Nano pinout in a smaller footprint for space-constrained designs. The castellated edges allow direct soldering onto custom carrier boards for volume manufacturing. Builders who require pre-soldered headers for immediate breadboard use should look elsewhere, as pins are supplied loose. Projects demanding wireless connectivity or higher clock speeds will need additional hardware.

48MHz RA4M1 with 256KB flash

The Renesas RA4M1 microcontroller operates at 48MHz and provides 256KB of flash storage alongside 32KB of RAM. This memory and speed combination determines whether the board can handle your firmware size and real-time requirements.

Highlights

  • Powerful 48MHz Renesas RA4M1 core drives advanced embedded tasks
  • 256KB flash and 32KB RAM support larger firmware and data buffers
  • Qwiic connector plus 5V I²C port simplify sensor and peripheral expansion
  • Programmable RGB LED gives instant visual feedback for debugging
  • 3 × 1.7 cm footprint with castellated edges fits tight enclosures and custom PCBs

Specifications

No published specifications for this item yet.

Questions about this item

Will the 4.3 × 1.7 cm board with castellated edges fit my existing Nano footprint?

Yes, the Nano R4 keeps the classic Nano pinout and its castellated edges let you solder it directly onto a custom carrier board or use the supplied loose headers for breadboard work.

Do I have to solder the loose male headers before I can use the Qwiic connector?

No, the Qwiic connector and the extra 5 V I²C port are already populated on the board, so you can plug in sensors immediately; solder headers only if you need breadboard access to the other pins.

Is the onboard RGB LED user-replaceable if it fails?

The LED is a surface-mount component soldered to the single-sided PCB, so it is not designed to be swapped by the user; it is driven by the RA4M1 and intended to last the life of the board.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.