Original Arduino UNO EK (एक) R4 WiFi – Made in India

The Original Arduino UNO EK (एक) R4 WiFi – Made in India is a powerful upgrade to the classic UNO platform, combining the trusted Arduino form factor with modern connectivity and performance. Powered by the Arduino UNO R4 WiFi, this board features the Renesas RA4M1 32-bit microcontroller running at 48 MHz, delivering significantly higher performance than earlier UNO boards.

In addition to the main MCU, the board includes an ESP32-S3 module that provides WiFi and Bluetooth connectivity, enabling seamless IoT development, wireless communication, and cloud integration.

The Arduino WiFi Bluetooth board also includes a 12×8 LED matrix, making it perfect for quick visual feedback, animations, and user interfaces without requiring external displays. With USB-C connectivity, 5V operating voltage, and compatibility with existing Arduino shields, the UNO R4 WiFi is ideal for makers, students, and professionals working on robotics, IoT, automation, and embedded systems.

The Arduino UNO R4 WiFi Made in India edition ensures reliable quality while supporting local manufacturing and the global Arduino ecosystem.

This board is perfect for IoT projects, smart home systems, robotics, automation, and educational electronics development.

Features:

• 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 on-board 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 12×8 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.

Specifications:

• Board Name: Arduino UNO R4 WiFi
• 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, I2C, SPI, CAN Bus
• 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

Package Includes:

• • 1 × Original Arduino UNO EK (एक) R4 WiFi – Made in India Development Board

Useful Links:

• Arduino UNO R4 WiFi development board Datasheet
• Arduino WiFi Bluetooth board Schematics