Description :
The Arduino UNO R4 WiFi merges the RA4M1 microprocessor from Renesas with the ESP32-S3 from Espressif, creating an all-in-one tool for makers with enhanced processing power and a diverse array of new peripherals.
With its built-in Wi-Fi® and Bluetooth® capabilities, the UNO R4 WiFi enables makers to venture into boundless creative possibilities. Furthermore,
this versatile board boasts a convenient on-board 12x8 LED matrix and a Qwiic connector, offering ample space for innovation and unleashing creativity.
This dynamic combination empowers makers to transform their ideas into reality and elevate their projects to unprecedented heights.
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 onboard 12x8 LED matrix, Qwiic connector, VRTC, 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
Let's explore what the UNO R4 WiFi has to offer:
Hardware compatibility with UNO form factor: The UNO R4 WiFi maintains the same form factor, pinout, and 5 V operating voltage as its predecessor, the UNO R3, ensuring a seamless transition for existing shields and projects.
Expanded memory and faster clock: The UNO R4 WiFi boasts increased memory and a faster clock speed, enabling more precise calculations and effortless handling of complex projects.
Extra onboard peripherals: The UNO R4 WiFi introduces a range of on-board peripherals, including a 12-bit DAC, CAN BUS, and OP AMP, providing expanded capabilities and design flexibility.
Extended 24 V tolerance: The UNO R4 WiFi supports a wider input voltage range, allowing seamless integration with motors, LED strips, and other actuators using a single power source.
HID support: With built-in HID support, the UNO R4 WiFi can simulate a mouse or keyboard when connected to a computer via USB, making it easy to send keystrokes and mouse movements.
Wi-Fi® and Bluetooth®: The UNO R4 WiFi hosts an ESP32-S3 module, enabling makers to add wireless connectivity to their projects. Combined with the Arduino IoT Cloud, makers can monitor and control their projects remotely.
Qwiic connector: The UNO R4 WiFi features a Qwiic I2C connector, allowing easy connection to nodes from the extensive Qwiic ecosystem. Adapter cables also enable compatibility with sensors and actuators based on other connectors.
Support for battery-powered RTC: The UNO R4 WiFi includes additional pins, including an "OFF" pin to turn off the board and a "VRTC" pin to keep the internal Real-Time Clock powered and running.
LED matrix: The UNO R4 WiFi incorporates a bright 12x8 red LED matrix, ideal for creative projects with animations or plotting sensor data, eliminating the need for additional hardware.
Diagnostics for runtime errors: The UNO R4 WiFi includes an error-catching mechanism that detects runtime crashes and provides detailed explanations and hints about the code line causing the crash.
With all these features packed into the well-known UNO form factor, now is the perfect time to upgrade your project or embark on your maker journey. The UNO R4 WiFi offers unparalleled versatility and possibilities for makers of all levels.
Arduino IoT Cloud Compatible!
Use your board on Arduino's IoT Cloud, a simple and fast way to ensure secure communication for all of your connected Things.
Specifications
Here you will find the technical specifications for the Arduino® UNO R4 Wifi.
Maximum current draw per pin: the UNO R4 series' maximum current draw per GPIO is 8 mA, which is significantly lower than previous versions. Exceeding this limit may damage your pin/board.
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, 4x
I2C
Yes, 1x
SPI
Yes, 1x
CAN
Yes 1 CAN Bus
Power
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
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
Resources
Development Environments
Arduino IDE
Arduino CLI
Arduino Web Editor
Arduino IoT Cloud
PDF Datasheet
Schematics
Documentation, including setup and getting started guides
