Arduino Uno R4 WiFi

The Arduino UNO R4 WiFi combines the processing power and exciting new peripherals of the RA4M1 microcontroller from Renesas with the wireless connectivity power of the ESP32-S3 from Espressif. On top of this, the UNO R4 WiFi offers an on-board 12x8 LED matrix, QWIIC connector, VRTC pin for backup battery and OFF pin, covering all potential needs makers will have for their next project.

With the UNO R4 WiFi, you can easily upgrade your project and add wireless connectivity to expand the reach of your current setup. If this is your first project, this board has everything you need to spark your creativity.

Features:

• Hardware compatibility with UNO form factor
• Expanded memory and faster clock
• Extra on-board peripherals
• Extended 24 V tolerance
• HID support
• Wi-Fi® and Bluetooth
• QWIIC connector
• Support for battery-powered RTC
• LED matrix
• Diagnostics for runtime errors

Specifications:

• Microcontroller: Renesas RA4M1
• Wireless connectivity: ESP32-S3
• USB: USB-C
• Digital I/O Pins: 14
• Analog Input Pins: 6
• DAC: 1
• PWM Pins: 6
• UART: 1
• I2C: 2 (SDA, SCL / A4, A5 and Qwiic)
• SPI: 1
• CAN: 1(requires an external transceiver)
• Circuit operating voltage: 5V (ESP32-S3 is 3.3V)
• Input voltage (VIN): 6-24V
• DC Current per I/O Pin: 8mA
• RA4M1 Clock Speed: 48 MHz
• ESP32-S3 Clock Speed: up to 240 MHz
• RA4M1 Memory: 256 kB Flash, 32 kB RAM
• ESP32-S3 Memory: 384 kB ROM, 512 kB SRAM
• Dimensions: 68.85mm x 53.34mm