Official Arduino UNO R4 Minima - Made in India | Compoden
Official Arduino UNO R4 Minima - Made in India
The Arduino UNO R4 Minima is the latest evolution of the classic UNO form factor, now built around a 32-bit Renesas RA4M1 ARM Cortex-M4 microcontroller running at 48 MHz. It retains the familiar 5V operating voltage and pinout, making it a direct upgrade for most UNO R3 projects while offering more memory, faster processing, and modern connectivity. This official board is manufactured in India under Arduino’s license, ensuring genuine quality with local availability.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller | Renesas RA4M1 (ARM Cortex-M4) |
| Operating Voltage | 5V |
| Digital I/O Pins | 14 (6 PWM) |
| Analog Input Pins | 6 (14-bit ADC) |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
What You Can Build With This
- Home automation hub with relay control and sensor monitoring
- Line-following or obstacle-avoidance robot
- Environmental data logger with SD card storage
- LED matrix display driver using PWM on digital pins
Compatibility
This board is pin-compatible with the original UNO R3 form factor, so most 5V Arduino shields and sensors work without modification. It integrates seamlessly with the Arduino IDE 2.x and can be programmed via the USB-C port. Common pairings include breadboards, motor drivers, and I2C/SPI modules operating at 5V.
Wiring Notes
Always connect the board to a stable 5–12V power source via the barrel jack or USB-C. Digital I/O pins can source up to 20 mA each; for higher loads, use transistors or relays. For I2C communication, pins A4 (SDA) and A5 (SCL) are default—no external pull-ups needed as the RA4M1 has internal ones.
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 R4 Minima maintains the same pinout and 5V logic as the Uno R3, so most shields operate correctly. However, note that the R4’s I2C pins are on a dedicated header (A4/A5 still work), and the 3.3V regulator has a higher current limit.
Can I use the Arduino IDE to program it?
Absolutely. Install the latest Arduino IDE 2.x, add 'Arduino Uno R4 Minima' from the Boards Manager, and you can start coding immediately.
Does the board come with a USB cable?
The board is typically sold without accessories. You will need a USB-C cable for programming and power—available separately on Compoden.
📦 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