Arduino UNO R4
Arduino UNO R4 WiFi
The Arduino UNO R4 WiFi is the next-generation upgrade of the legendary UNO, combining a powerful 32-bit microcontroller, built-in WiFi + Bluetooth, and an onboard LED matrix while keeping the classic UNO form factor and shield compatibility.
INFOGRAPHIC OVERVIEW
Main MCU: Renesas RA4M1 (32-bit ARM Cortex-M4) Clock Speed: 48 MHz Flash Memory: 256 KB SRAM: 32 KB Connectivity: WiFi + Bluetooth LE (ESP32-S3 module) Digital I/O Pins: 14 Analog Inputs: 6 Onboard Display: 12x8 LED Matrix (96 LEDs) Operating Voltage: 5V Form Factor: Classic UNO Layout
KEY FEATURES (Point-by-Point)
1 32-bit ARM Cortex-M4 Processor
Suitable for more complex applications
2 Built-in WiFi + Bluetooth
Powered by ESP32-S3 module
WiFi connectivity for IoT projects
Bluetooth LE for wireless control
Arduino IoT Cloud compatible
No external WiFi shield required.
3 128 LED Matrix Built-In
96 programmable LEDs
Display text, animations, sensor data
Great for interactive projects & education
4 I/O & Interfaces
Feature | Details |
Digital I/O Pins | 14 |
PWM Pins | 6 |
Analog Inputs | 6 (14-bit ADC) |
DAC | 1 (12-bit) |
UART | Yes |
I2C | Yes |
UNO shield compatible Supports 5V logic
POWER & VOLTAGE
Operating Voltage: 5V
USB-C powered
VIN input supported
Backward compatible with many UNO shields
IDEAL APPLICATIONS
IoT Devices Smart Home Projects Robotics Control Real-time Data Monitoring Educational STEM Labs Wireless Sensor Networks
UNO R4 WiFi vs UNO R3
Feature | UNO R4 WiFi | UNO R3 |
Architecture | 32-bit ARM | 8-bit AVR |
Clock Speed | 48 MHz | 16 MHz |
WiFi | Yes | No |
Bluetooth | Yes | No |
LED Matrix | Built-in | NiFi is a major upgrade over R3.
Why Choose Arduino UNO R4 WiFi? Modern 32-bit performance Built-in wireless connectivity Onboard LED matrix for creative projects 5V compatible Shield backward compatibility Ideal for IoT + robotics development
Since you work with robotics and Arduino boards, UNO R4 WiFi is perfect for offering modern IoT-ready UNO boards while keeping |