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Description
xOriginal Arduino UNO EK (एक) R4 WiFi - Made in India
The Original Arduino Uno EK R4 Wi-Fi, proudly manufactured in India, enhances the UNO series with an advanced 32-bit architecture. It operates on the Renesas R7FA4M1AB3CFM microcontroller, which boasts a 48 MHz Arm Cortex-M4 processor, along with 256 kB Flash and 32 kB SRAM.
Equipped with integrated WiFi and Bluetooth through the ESP32-S3 module, this board streamlines the development of IoT applications. The inclusion of a programmable 12×8 LED matrix adds a creative dimension, making it perfect for animations and games. Suitable for both novices and experienced developers, the UNO R4 WiFi supports an input voltage range of 6-24 V and can be powered via USB-C. Benefit from comprehensive documentation and full compatibility with legacy Arduino shields.
Engage with the Arduino UNO R4 WiFi and transform your innovative concepts into reality.
Features
-
Main MCU
Renesas RA4M1 (R7FA4M1AB3CFM#AA0) – Oversees all pin headers and communication interfaces -
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) -
Memory
256 kB Flash Memory
32 kB SRAM
8 kB EEPROM (Data Memory) -
Peripherals
Capacitive Touch Sensing Unit (CTSU)
USB 2.0 Full-Speed (USBFS)
14-bit ADC
Up to 12-bit DAC
Operational Amplifier (OPAMP) -
Power
5V operating voltage for RA4M1
Recommended input voltage: 6-24V
VIN pin & barrel jack (6-24V input)
USB-C power supply (5V) -
Communication
1x UART (D0, D1)
1x SPI (D10-D13, ICSP header)
1x I2C (A4, A5, SDA, SCL)
1x CAN (D4, D5, requires external transceiver) -
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) |
Specifications
| Specification | Details |
|---|---|
| Microcontroller | R7FA4M1AB3CFM |
| Processor | 48 MHz Arm Cortex-M4 |
| Connectivity |
Shipping & Return
xReturn Policy Overview
At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.
Return Window
- Standard Returns: 7 days from delivery date for any reason, including change of mind.
- Defective / Damaged Items: 7 days from delivery date.
- Manufacturing Defects (Warranty): 15 days from delivery, unless otherwise specified on the product page.
What Can Be Returned
Most items sold on ROBODIUM™ can be returned within the return window, including:
- Items you no longer need or changed your mind about
- Products received in damaged condition
- Items with manufacturing defects
- Wrong items received (item mismatch)
- Missing components inside the package
Return Conditions
To be eligible for a return, items must be:
- In their original, unused condition
- In the original packaging with all accessories, manuals, and free gifts (if any)
- Accompanied by proof of purchase
Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.
How to Initiate a Return
- Contact us via email at support@robodium.com or call +91 8123109966
- Provide your order number and reason for return
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- Our team will review and approve your request within 1–2 business days
Return Pickup Process
We arrange the return pickup for you — hassle-free returns similar to major e-commerce platforms.
- Pickup is coordinated after return approval
- Pack the product securely in its original packaging
- Include a copy of the order confirmation or packing slip
- Our logistics partner will collect the package at the scheduled time
Return Shipping Costs
- Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs.
- Change-of-mind returns: ₹100 return shipping fee will be deducted from the refund.
Refund Process
- Refund Method: Original payment method
- Processing Time: 5–7 business days after inspection
- Refund Amount: Full purchase price minus applicable return shipping fees
- Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable)
Replacements
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- Dispatched within 2 business days of receiving the return
- If replacement is unavailable, a full refund will be issued
Warranty Terms
All products include a minimum 15-day warranty against manufacturing defects, unless otherwise specified on the product page.
Warranty does not cover misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.
Order Cancellations
- Orders in Pending or Payment Verification status can be canceled for a full refund
- Contact us immediately before shipping to cancel an order
- Once shipped, orders cannot be canceled but can be returned after delivery
Customer Service Commitment
- Email response within 24 hours on business days
- Phone support: Monday–Saturday, 10:00 AM – 6:00 PM IST
- Return request review: 1–2 business days
- Issue resolution within 48 hours of verification
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