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

The Original Arduino Uno EK R4 Wi-Fi, proudly Made in India, upgrades the UNO series with a powerful 32-bit architecture. It runs on the Renesas R7FA4M1AB3CFM microcontroller, featuring a 48 MHz Arm Cortex-M4 processor, 256 kB Flash, and 32 kB SRAM.

With built-in WiFi and Bluetooth via the ESP32-S3 module, it simplifies IoT projects. A programmable 12×8 LED matrix adds a creative touch, ideal for animations and games. Designed for both beginners and pros, the UNO R4 WiFi supports 6-24 V input and USB-C power. Enjoy extensive documentation and full compatibility with older Arduino shields.

Get hands-on with Arduino UNO R4 WiFi and bring your ideas to life.

Features

1. Main MCU
   Renesas RA4M1 (R7FA4M1AB3CFM#AA0) – Controls all pin headers and communication buses
2. Processor & Performance
   48 MHz Arm Cortex-M4 with Floating Point Unit (FPU)
   5V operating voltage
   Real-Time Clock (RTC)
   Memory Protection Unit (MPU)
   Digital-to-Analog Converter (DAC)
3. Memory
   256 kB Flash Memory
   32 kB SRAM
   8 kB EEPROM (Data Memory)
4. Peripherals
   Capacitive Touch Sensing Unit (CTSU)
   USB 2.0 Full-Speed (USBFS)
   14-bit ADC
   Up to 12-bit DAC
   Operational Amplifier (OPAMP)
5. Power
   5V operating voltage for RA4M1
   Recommended input voltage: 6-24V
   VIN pin & barrel jack (6-24V input)
   USB-C power supply (5V)
6. Communication
   1x UART (D0, D1)
   1x SPI (D10-D13, ICSP header)
   1x I2C (A4, A5, SDA, SCL)
   1x CAN (D4, D5, requires external transceiver)
7. Wireless Connectivity
   Wi-Fi 4 (802.11 b/g/n) – Up to 150 Mbps, 2.4 GHz band
   Bluetooth 5

Comparison Table

Feature	Original Arduino Uno EK R4 WiFi (Made in India)	Arduino Uno R4 WiFi (Standard)
Microcontroller (MCU)	Renesas R7FA4M1A (Cortex-M4, 48 MHz)	Renesas RA4M1 (Cortex-M4, 48 MHz)
Wi-Fi / Bluetooth	ESP32-S3 module	ESP32-S3 module (up to 240 MHz)
Flash / SRAM / EEPROM	256 kB / 32 kB SRAM / 8 kB EEPROM	256 kB / 32 kB SRAM / 8 kB EEPROM
On-board LED matrix	12 × 8 programmable red LED display	12 × 8 programmable red LED display
Qwiic connector	Yes (for I²C, 3.3 V)	Yes (compatible)
Peripherals	14-bit ADC, 12-bit DAC, CAN bus, RTC, OP-AMP	14-bit ADC, 12-bit DAC, CAN bus, RTC, OP-AMP
Power & Input Voltage	5V operating; 6–24V VIN & USB-C	5V operating; 6–24V VIN & USB-C
Dimensions / Form Factor	UNO form factor (~68.8 × 53.3 mm), shield-compatible	UNO form factor (~68.8 × 53.3 mm), shield-compatible
Country of Origin	Made in India	Official Arduino production (Italy/Global)
Approximate Price	Rs. 1339	Rs. 2299 VIEW