R7FA4 PLUS B Development Board, Based on R7FA4M1AB3CFM, Equipped with ESP32-S3FN8, Compatible with Arduino UNO R4 WiFi

SKU: 26717
Part Number: R7FA4 PLUS B
Brand: Waveshare


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R7FA4 PLUS B Development Board, Based on R7FA4M1AB3CFM, Equipped with ESP32-S3FN8, Compatible with Arduino UNO R4 WiFi, Onboard 12×8 LED Matrix
R7FA4 PLUS B Development Board

Enhanced version of Arduino UNO R4 WiFi

Based on R7FA4M1AB3CFM, Compatible with Arduino UNO R4 WiFi

Product Parameters Comparison


Microcontroller R7FA4 (32-bit ARM Cortex-M4) R7FA4 (32-bit ARM Cortex-M4) ESP32-S3R8 (Dual-core 32-bit Xtensa LX7)
ESP32-S3FN8 (Dual-core 32-bit Xtensa LX7)
Clock Frequency R7FA4: 48MHz R7FA4: 48MHz ESP32-S3R8: 240MHz
ESP32-S3FN8: 240MHz
Storage R7FA4: 256kB Flash, 32kB RAM R7FA4: 256kB Flash, 32kB RAM ESP32-S3R8: 384kB ROM, 512kB RAM, 16MB Flash, 8MB PSRAM
ESP32-S3FN8: 384kB ROM, 512kB RAM, 8MB Flash
Wireless communication None 2.4GHz WiFi + Bluetooth LE
Operating voltage Options for 5V/3.3V, support more shields 3.3V
Power input 6~24V 6~21V
Reset button Lateral, easier to use when connecting with shield Vertical
IO pin Output current 8mA 40mA
Digital pins 14 14
Analog pins 6 8
DAC 2 None
PWM 6 5
UART 1 2
I2C 1 1
SPI 1 1
CAN 1 None
DC jack Low profile, shields won't be blocked anymore while connecting None
power output header Provides 5V OR 3.3V power output and common-grounding with other boards None
5V power output Up to 2000mA Max, features higher driving capability 1000mA Max
experimental board Support, solder pad is provided for DIY interfaces to connect with experimental board Support

Connecting With Waveshare Shields

Connecting With Sorts Of Sensors

Connecting With 2.8inch TFT Touch Shield

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

Onboard 12×8 red LED Matrix

Supports customisation of display effect

What's On Board
  1. R7FA4M1AB3CFM
  2. ESP32-S3-MINI-1 module
  3. MP8759
    5V voltage regulator
  4. TXB0108DQSR
    voltage translator, for communication between R7FA4 and ESP32-S3
  5. AMS1117-3.3
    3.3V voltage regulator
  6. DC input
    6V ~ 24V
  7. Qwiic connector
    for connecting I2C device of Qwiic Eco
  8. USB Type-C connector
    for uploading program OR serial port debugging
  9. Power output header
    3.3V OR 5V, voltage level configured by the onboard power configuration switch, used as power output and common-grounding with other boards
  1. ESP32-S3 pinheader
    for ESP32-S3-MINI-1 firmware downloading
  2. USB communication selection
  3. ICSP interface
  4. Power configuration
    for configuring R7FA4 PLUS B operating voltage
  5. Reset button
  6. Arduino interface
    compatible with standard Arduino interface, adapting 2.54 pitch solder pad, can be directly connected to experimental board
  7. User LED
  8. Serial port RX/TX indicators
  9. Power indicator
  10. 12×8 LED matrix
Pinout definition
Outline dimensions
Resources & Services

Weight: 0.049 kg

Quick Overview

  1. R7FA4 PLUS B x1
  2. USB Type-A to Type-C cable x1