Arduino UNO R4 WiFi - Made in India | Compoden
Arduino UNO R4 WiFi - Made in India
The Arduino UNO R4 WiFi is the latest official board from Arduino, manufactured in India. It combines a Renesas RA4M1 microcontroller with an ESP32-S3 module for WiFi and Bluetooth LE. This board offers a familiar UNO footprint with modern 32-bit performance and wireless connectivity for IoT projects.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller | Renesas RA4M1 (Arm Cortex-M4) |
| Clock Speed | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Wireless | ESP32-S3 (WiFi 802.11 b/g/n, BLE 5.0) |
What You Can Build With This
- Smart home sensor hub that reports temperature, humidity, and motion to the cloud
- WiFi-controlled robot with real-time video streaming
- Bluetooth low energy beacon for indoor positioning
- IoT weather station that publishes data to a web dashboard
Compatibility
The board operates at 5V logic and is compatible with most existing Arduino UNO R3 shields. It works in the Arduino IDE 2.x and can be programmed via USB-C or over-the-air updates. Standard 5V sensors, servos, and LCD displays pair directly with the I/O headers.
Wiring Notes
Use the USB-C port for power and programming; the onboard regulator accepts 7-12V on the VIN pin. Digital I/O pins can source up to 20 mA each. The ESP32-S3 antenna is located near the reset button—keep clear of metal enclosures to maintain signal strength.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino UNO R3 shields?
Yes, the Arduino UNO R4 WiFi uses the same pinout as the R3, so most 5V-compatible shields plug directly in. Check the shield’s logic voltage if it uses 3.3V only.
Does this board have built-in WiFi and Bluetooth?
Yes, the onboard ESP32-S3 module provides 2.4 GHz WiFi (b/g/n) and Bluetooth Low Energy 5.0 connectivity without extra hardware.
What programming environment do I need?
Use the Arduino IDE 2.0 or later, available for Windows, macOS, and Linux. Install the Arduino UNO R4 boards package from the Boards Manager to get started.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items