SPECIFICATIONS

Study materials
R4MINIMA:https://www.nologo.tech/product/arduino/arduinoUnoR4MINIMA. html
R4WlFl:https://www. nologo.tech/product/arduino/ArduinoUnoR4WlFl. html

UNO R4 Minima
This board features the Renesas RA4M1 microprocessor, delivering higher processing power, expanded memory, and additional peripherals.

UNO R4 WiFi
Integrates the Renesas RA4M1 and the ESP32-S3, creating an all-in-one tool for makers with enhanced processing power and a variety of new peripherals. With its built-in Wi-Fi® and Bluetooth® capabilities, the creative possibilities are limitless. The UNO R4 WiFi enables makers to venture into the infinite.

Comparison Table

Features

Features (UNO R4 Series)

• Hardware Backward Compatibility: The UNO R4 maintains the same pinout and 5V operating voltage as the UNO R3. This means existing shields and projects can be easily migrated to the new board.

• New Onboard Peripherals: The UNO R4 board features several exciting new peripherals, including a 12-bit DAC, CAN Bus, OP Amp, and SWD port. These additions expand the possibilities for developers, enabling more advanced projects.

• More Memory & Faster Clock: With increased memory capacity (16x) and higher clock speed (3x), the UNO R4 Minima can perform more precise calculations and handle more complex projects. This allows makers to build more sophisticated and advanced projects.

• HID via USB-C: The UNO R4 can emulate a mouse or keyboard when connected to its USB-C port. This feature allows makers to easily create quick and cool interfaces.

• Wider Voltage Range & Electrical Stability: The UNO R4 board can be powered with up to 24V, thanks to its improved thermal design. The circuit design incorporates multiple protection measures to reduce the risk of damage to the board or computer due to wiring errors, especially for inexperienced users. Furthermore, the pins of the RA4M1 microcontroller have overcurrent protection, providing additional safeguards against mistakes.

• Capacitive Touch Support: The RA4M1 microcontroller used on the UNO R4 board natively supports capacitive touch.

Features (UNO R4 WiFi)

• Wi-Fi® and Bluetooth® Capability: The UNO R4 WiFi features an ESP32-S3-MINI co-processor that enhances the capabilities of the RA4M1 microcontroller. With Wi-Fi and Bluetooth® connectivity, developers can easily connect to the internet and create IoT projects.

• Onboard 12x8 LED Matrix: The UNO R4 WiFi includes a bright 12x8 red LED matrix (96 LEDs total). This feature is perfect for creative projects using animations or visualizing sensor data without any additional hardware.

• Qwiic® Connector: The UNO R4 WiFi board is equipped with an industry-standard Qwiic connector, enabling fast and convenient prototyping. Using the Qwiic system, various compatible modules can be connected, allowing makers to easily create custom projects and expand the functionality of the UNO R4 WiFi.

• Runtime Error Diagnostics: The UNO R4 WiFi board has a built-in error-catching mechanism that can detect operations that might crash the board, such as division by zero. When an error is detected, the board prints a detailed error description and cause to the Serial Monitor.

• Battery-Powered RTC Support: The UNO R4 has additional pins that allow the main microcontroller to be powered down while keeping the internal RTC (Real-Time Clock) powered by an external battery.

Features (UNO R4 Minima)

• Powerful & Affordable: The UNO R4 Minima offers impressive performance at a competitive price. This board is a particularly cost-effective option, solidifying Arduino's commitment to making advanced technology accessible.

• SWD Pins for Debugging: The onboard SWD (Serial Wire Debug) port provides makers with a simple and reliable way to connect third-party debug probes. This feature ensures project reliability and allows for efficient debugging of any potential issues.