Waveshare R7FA4 PLUS B Development Board, Compatible with Arduino UNO R4 WiFi


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SKU: R101198
  1. Renesas RA4M1 MCU + Espressif ESP32-S3.
  2. 12×8 LED matrix, Qwiic connectors, VRTC.
  3. Works with Arduino UNO R4 Minima.
  4. 256 kB Flash, 32 kB RAM, 12-bit DAC, CAN bus.
  5. USB-C or VIN (6V<=VIN<=21V) input options.


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Category: IoT Development Boards

R7FA4 PlUS B combines the processing power of Renesas Electronics’ RA4M1 microcontroller with the brand-new wireless connectivity capabilities of Espressif’s ESP32-S3. In addition to this, the board also offers onboard 12×8 LED matrix, Qwiic connectors, VRTC, and OFF pins, catering to all potential needs for your next project.
With R7FA4 PlUS B, you can easily upgrade your project and add wireless connectivity to extend the coverage of your current setup. If this is your first project, the board has everything you need to spark your creativity.

Connecting With Sorts Of Sensors:

 for reference only, please refer to the Package Content for detailed part list.


Waveshare R7Fa4 Plus B 5 1


Pinout Definition:
Waveshare R7Fa4 Plus B Details Inter


What’s On Board:
Waveshare R7Fa4 Plus B Details Intro

Waveshare Untitled 4


  1. Based on R7FA4M1AB3CFM, and is compatible with Arduino UNO R4 Minima.
  2. Utilizes Renesas Electronics’ RA4M1 (Arm® Cortex®-M4) microcontroller, with a main frequency of 48MHz.
  3. Onboard ESP32-S3-MINI-1 module, integrates 2.4GHz Wi-Fi and Bluetooth LE dual-mode wireless communication, allowing the maker to use it for wireless communication. Combined with Arduino IoT Cloud, you can remotely monitor and control the projects.
  4. Onboard 12×8 red LED matrix, suitable for creative projects with animation or plotting sensor data, no additional hardware is required.
  5. Equipped with 256 kB Flash and 32 kB RAM, the expanded memory can easily handle complex projects.
  6. The R7FA4 Plus development board adds a 12-bit DAC, CAN bus, and operational amplifiers, providing expanded functionality and flexibility for designs.
  7. Onboard 5V/3.3V headers for easy voltage switching, allowing the use of more expansion modules.
  8. Flexible power options, supporting USB-C power supply or external input power VIN (6V<=VIN<=21V).
  9. Onboard power indicator LED (PWR), USER LED, serial port receive indicator LED (RX), and transmit indicator LED (TX), making it easy to monitor the working status of the development board.
  10. Onboard ICSP interface, can be used as an SPI interface.
    Supports user soldering of corresponding interface insertion into the experimental board.

Package Includes:

1 x Waveshare R7FA4 PLUS B Development Board, Compatible with Arduino UNO R4 WiFi

1 x USB Type-A to Type-C cable

SKU: R101198 Category:

ESP32-S3FN8 (Dual-core 32-bit Xtensa LX7), R7FA4 (32-bit ARM Cortex-M4)

Clock Frequency

ESP32-S3FN8: 240MHz, R7FA4: 48MHz


ESP32-S3FN8: 384kB ROM, 512kB RAM, 8MB Flash, R7FA4: 256kB Flash, 32kB RAM

Wireless Configuration

2.4GHz WiFi + Bluetooth LE

Operating Voltage (V)

Options for 5V/3.3V, support more shields

Input Power


Shipping Weight 0.110 kg
Shipping Dimensions 15 × 11 × 5 cm

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Country Of Origin: China