UNO R4 WiFi
The Arduino UNO R4 WiFi is designed around the 32-bit microcontroller RA4M1 from Renesas while also featuring a ESP32 module for Wi-Fi® 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.
The MCU on the board is the high performance Renesas RA4M1 (Arm® Cortex®-M4) with a 48 MHz clock speed, 32 kB SRAM and 256 kB flash memory. This MCU features an RTC, a DAC and a CAN bus and has support for HID via USB.
The UNO R4 WiFi also features an ESP32-S3 for Wi-Fi®/Bluetooth® connectivity, which can also be separately programmed via a specific header.
Learn how to change the ADC resolution on the UNO R4 WiFi.
Learn how to send messages using the CAN bus on the UNO R4 WiFi.
Learn how to set up the Arduino UNO R4 WiFi, the fourth revision of our most popular and important development board.
A step-by-step guide on how to set up the UNO R4 WiFi with the Arduino IoT Cloud.
Learn how create waveforms and output them on a piezo, using the DAC on the UNO R4 WiFi board.
Learn how to access the EEPROM memory on the UNO R4 WiFi.
Learn how to load custom firmware to the ESP32-S3 module on the UNO R4 WiFi, using the esptool.py command line interface.
Get off the ground with the Arduino UNO R4 WiFi built-in LED matrix. Learn the different techniques for controlling it, create animations, graphics or even games.
Learn how use the Qwiic connector on the Arduino UNO R4 WiFi.
A step-by-step guide to install the board package needed for the UNO R4 WiFi board.
Learn how to access the real-time clock (RTC) on the UNO R4 WiFi.
Learn how to get information from the Cortex-M4 processor on a runtime error.
Learn how to use the UNO R4 WiFi as a mouse/keyboard.
Learn how to use the VRTC and OFF Pins on the UNO R4 WiFi.
Discover examples compatible with the WiFi library included in the UNO R4 core.