Uno R4 Minima clone

This Uno R4 Minima-compatible development board is a high-performance alternative to the classic R3 Uno, offering all the functionality of the official Arduino® UNO R4 Minima—at a more accessible price. It's perfect for makers, educators, and engineers looking for next-generation features while retaining compatibility with the Arduino ecosystem.

Built around the powerful Renesas RA4M1 32-bit Arm® Cortex®-M4 processor, this board runs at 48 MHz and offers significantly more memory and processing capability than the older Uno R3. It maintains the same physical pin layout and 5 V logic, ensuring seamless compatibility with most shields and existing Arduino projects.

Please note: This board is based upon the Arduino® R4 reference design. It is functionally identical and fully compatible with the Arduino® UNO R4 Minima in terms of hardware layout, software support, and development experience.

Features:

• Processor: Renesas RA4M1, 48 MHz, 32-bit Arm® Cortex®-M4
• Flash Memory: 256 KB
• SRAM: 32 KB
• Operating Voltage: 5 V
• Digital I/O Pins: 14 (6 PWM-capable)
• Analog Inputs: 6
• UART: 1
• I2C: 1
• CAN Bus: 1
• USB Connection: USB Type-C® for power and programming
• Form Factor: Same size and pinout as the classic Uno
• IDE Support: Compatible with the Arduino® IDE and libraries