UNO R4 WiFi Compatible Arduino Development Board RA4M1 ESP32-S3 USB-C

🔧 UNO R4 WiFi Compatible Development Board | AuscomTech

This UNO R4 WiFi compatible development board combines a Renesas RA4M1 32-bit microcontroller with an ESP32-S3-MINI wireless coprocessor, providing a powerful platform for connected electronics and embedded projects.

It features Wi-Fi and Bluetooth connectivity, USB-C programming, a built-in 12×8 red LED matrix, Qwiic expansion and hardware interfaces including ADC, PWM, DAC, SPI, I2C and CAN.

The familiar UNO-format pin layout and 5V operating voltage make it suitable for IoT devices, automation, robotics, sensor systems, education and general microcontroller prototyping.

⭐ Key Features

• Renesas RA4M1 Processor – 32-bit Arm Cortex-M4 microcontroller running at up to 48MHz.
• ESP32-S3-MINI Coprocessor – adds integrated Wi-Fi and Bluetooth connectivity for wireless and IoT applications.
• 12×8 LED Matrix – 96 onboard red LEDs for status displays, animations, sensor readings and visual feedback.
• USB-C Programming – convenient modern connection for programming and serial communication.
• UNO-Format Layout – familiar header arrangement for easier integration with compatible shields and prototyping hardware.
• Analog & Digital I/O – provides 14 digital interfaces, 6 PWM outputs and 6 ADC inputs.
• 12-Bit DAC – dedicated analog output for waveform generation and other analog-control applications.
• CAN Interface – supports development of CAN-based communication and control projects.
• Qwiic Expansion – onboard connector allows convenient attachment of compatible I2C sensors and modules.
• RTC Battery Support – VRTC connection can maintain the internal real-time clock using an external battery source.
• SWD Debug Interface – supports connection of compatible debugging hardware during development.
• Wide External Supply Range – accepts approximately 6–24V through the external power input.

📊 Technical Specifications

• Board Type: UNO R4 WiFi compatible development board
• Main Microcontroller: Renesas RA4M1
• CPU Architecture: 32-bit Arm Cortex-M4
• Clock Frequency: 48MHz
• Flash Memory: 256KB
• SRAM: 32KB
• Wireless Coprocessor: ESP32-S3-MINI
• Wireless Connectivity: Wi-Fi and Bluetooth
• Working Voltage: 5V
• External Input Voltage: 6–24V
• Programming Port: USB-C
• Digital I/O Interfaces: 14
• PWM Interfaces: 6
• ADC Interfaces: 6
• DAC Interfaces: 1 × 12-bit
• SPI Interfaces: 1
• I2C Interfaces: 1
• CAN Interfaces: 1
• Onboard Display: 12 × 8 red LED matrix, 96 LEDs
• Additional Connections: Qwiic, VRTC and OFF
• Debug Interface: SWD
• Approximate Dimensions: 68.5 × 53.3mm

🧩 Typical Applications

• Wi-Fi and Bluetooth IoT devices
• Home automation and remote control
• Wireless sensor monitoring
• Robotics and mechatronics
• CAN communication projects
• Data acquisition and logging
• LED matrix displays and indicators
• Embedded control systems
• Electronics education and prototyping

⚠️ Important Notes

• This is a generic UNO R4 WiFi compatible board and is not an official Arduino-branded product.
• This listing is for the WiFi version with ESP32-S3-MINI wireless functionality and onboard 12×8 LED matrix.
• Compatibility with individual shields and accessories depends on their pin usage, voltage requirements and software support.
• Check the electrical requirements of external sensors and modules before connection.
• USB-C cable, external power supply, shields and expansion modules are not included.

📦 Package Includes

• 1 × UNO R4 WiFi Compatible Development Board

🔗 Recommended Accessories (Not Included)

• USB-C data cable – programming, power and serial communication
• Qwiic-compatible sensor module – quick I2C expansion
• UNO-format prototype shield – custom circuit development
• CAN transceiver module – connection to external CAN networks