Arduino UNO R4 WiFi combines the processing power of the Renesas RA4M1 microcontroller with the wireless connectivity capabilities of the ESP32-S3 from Espressif. Beyond that, UNO R4 WiFi offers a built-in 12x8 LED matrix, Qwiic connector, VRTC, and OFF pin to meet all the potential needs makers will have for their next projects.
With UNO R4 WiFi, you can easily upgrade your project and add wireless connectivity to extend the reach of your existing setup. Whether this is your first project or not, this board has everything you need to spark your creativity.
UNO Form Factor Compatibility: UNO R4 WiFi maintains the same form factor, pin layout, and 5V operating voltage as its predecessor UNO R3, ensuring a seamless transition for existing shields and projects.
Expanded Memory and Faster Clock: UNO R4 WiFi features increased memory and a higher clock speed, enabling more precise calculations and effortless handling of complex projects.
Additional Built-In Peripherals: UNO R4 WiFi offers a range of built-in peripherals, including a 12-bit DAC, CAN BUS, and OP AMP, providing extended capabilities and design flexibility.
Expanded 24V Tolerance: UNO R4 WiFi supports a wider input voltage range, allowing smooth integration with motors, LED strips, and other actuators that use a single power source.
HID Support: With built-in HID support, UNO R4 WiFi can simulate a mouse or keyboard when connected to a computer via USB, making it easier to send keystrokes and mouse movements.
Wi-Fi® and Bluetooth®: UNO R4 WiFi hosts an ESP32-S3 module, enabling makers to add wireless connectivity to their projects. When combined with Arduino IoT Cloud, makers can remotely monitor and control their projects.
Qwiic Connector: UNO R4 WiFi features a Qwiic I2C connector, providing easy connectivity to nodes from the comprehensive Qwiic ecosystem. Adapter cables also ensure compatibility with sensors and actuators based on other connectors.
Battery-Powered RTC Support: UNO R4 WiFi includes additional pins, such as a "OFF" pin to power down the board and a "VRTC" pin to keep the Real-Time Clock running even when the board is off.
LED Matrix: UNO R4 WiFi comes with a bright 12x8 red LED matrix, ideal for creative projects that display animations or sensor data without the need for additional hardware.
Diagnostics for Runtime Errors: UNO R4 WiFi incorporates an error capture mechanism that detects runtime crashes and provides detailed explanations and hints about the code line causing the crash.
Board |
Name |
Arduino® UNO R4 WiFi |
SKU |
ABX00087 |
|
Microcontroller |
Renesas RA4M1 (Arm® Cortex®-M4) |
|
USB |
USB-C® |
Programming Port |
Pins |
Digital I/O Pins |
14 |
Pins |
Analog Input Pins |
6 |
DAC |
1 |
|
PWM pins |
6 |
|
Communication |
UART |
yes, 1x |
I2C |
yes, 1x |
|
SPI |
yes, 1x |
|
CAN |
yes 1 CAN Data Bus |
|
Power |
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 |
Main Core |
48 MHz |
ESP32-S3 |
up to 240 MHz |
|
Memory |
RA4M1 |
256 kB Flash, 32 kB RAM |
ESP32-S3 |
384 kB ROM, 512 kB SRAM |
|
Dimensions |
Width |
68.85 mm |
Length |
53.34 mm |