The Arduino UNO R4 WiFi is designed around the 32-bit microcontroller RA4M1 from Renesas while also featuring a ESP32 module for WiFi and Bluetooth connectivity. Its distinctive 12x8 LED matrix makes it possible to prototype visuals directly on the board, and with a Qwiic connector, you can create projects plug-and-play style.

Name: Arduino® UNO R4 WiFi

SKU: ABX00087

Microcontroller: Renesas RA4M1 (Arm® Cortex®-M4)

Radio Module: ESP32-S3-MINI-1-N8

USB: USB-C® Programming Port

Digital I/O Pins: 14

Analog input pins: 6

DAC: 1

PWM pins: 6

External interrupts: 2, 3

UART: Yes, 1x

I2C: Yes, 1x

SPI: Yes, 1x

CAN: Yes 1 CAN Bus

Circuit operating voltage: 5 V (ESP32-S3 is 3.3 V)

Input voltage (VIN): 6-24 V

DC Current per I/O Pin: 8 mA

Clock speed (RA4M1): 48 MHz

Clock speed (ESP32-S3-MINI-1-N8): up to 240 MHz

Memory (RA4M1): 256 kB Flash, 32 kB RAM

Memory (ESP32-S3-MINI-1-N8): 384 kB ROM, 512 kB SRAM

Width: 68.85 mm

Length: 53.34 mm