Explore our selection ofUno R4 compatibleclone boards, offering the same powerful features as the officialArduino Uno R4 Minima and Uno R4 WiFiat a more affordable price. These boards maintain full compatibility with the Arduino ecosystem, making them ideal for prototyping, IoT applications, and DIY projects.

UNO R4 WIFI Advanced Microcontroller with Wireless Connectivity

Unlock the next level of innovation with this powerful development board, featuring Renesass RA4M1 microcontroller and Espressifs ESP32-S3 for seamless wireless integration. Designed for makers, hobbyists, and engineers, this board retains the classic UNO form factor while delivering enhanced performance and expanded capabilities.

Key Features:

• Enhanced Performance:Upgraded processing power with increased memory and a faster clock speed for complex projects.
• Seamless Compatibility:Maintains the same pinout, form factor, and 5V support as previous UNO models, ensuring smooth integration with existing shields and accessories.
• Wireless Connectivity:Built-in Wi-Fi and Bluetooth via ESP32-S3 for effortless IoT applications and remote control.
• Expanded Peripherals:Includes a 12-bit DAC, CAN BUS, OP AMP, and HID support for advanced interfacing.
• Versatile Power Input:Handles up to 24V, ideal for powering motors, LEDs, and other high-power components.
• Real-Time Applications:Features a Qwiic I2C connector, battery-powered RTC support, and an LED matrix for animations or data visualization.
• Reliable & User-Friendly:Built-in error diagnostics and an OFF pin for power management, making it a robust choice for beginners and professionals alike.

Uno R4 vs Uno R3: Key Advantages

The Uno has been the cornerstone of the maker movement for nearly two decades, with the R3 version becoming the de facto standard for electronics hobbyists and educators worldwide. With the introduction of the R4 series (available in both Minima and WiFi variants)

Comprehensive Comparison Table

Feature Category	Specific Feature	Uno R3	Uno R4 Minima	Uno R4 WiFi
Processor	Microcontroller	ATmega328P	Renesas R7FA4M1AB	Renesas R7FA4M1AB + ESP32-S3-MINI
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