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
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Main MCU
Renesas RA4M1 (R7FA4M1AB3CFM#AA0) – Controls all pin headers and communication buses
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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)
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Memory
256 kB Flash Memory
32 kB SRAM
8 kB EEPROM (Data Memory)
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Peripherals
Capacitive Touch Sensing Unit (CTSU)
USB 2.0 Full-Speed (USBFS)
14-bit ADC
Up to 12-bit DAC
Operational Amplifier (OPAMP)
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Power
5V operating voltage for RA4M1
Recommended input voltage: 6-24V
VIN pin & barrel jack (6-24V input)
USB-C power supply (5V)
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Communication
1x UART (D0, D1)
1x SPI (D10-D13, ICSP header)
1x I2C (A4, A5, SDA, SCL)
1x CAN (D4, D5, requires external transceiver)
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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
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