Arduino Uno WiFi Rev2 Wireless Development Board

The Arduino Uno WiFi Rev2 is a powerful development board that combines the classic Arduino Uno form factor with integrated Wi-Fi connectivity and advanced sensing capabilities. Featuring the new ATmega4809 8-bit microprocessor from Microchip, this board offers enhanced performance for a wide range of IoT (Internet of Things) and embedded projects.

A key upgrade is the onboard IMU (Inertial Measurement Unit), enabling motion and orientation sensing for robotics, drones, and interactive installations. The ECC608 crypto chip accelerator ensures secure Wi-Fi connections, making it suitable for applications requiring encrypted data transmission. The self-contained Wi-Fi module includes a full TCP/IP protocol stack, allowing the board to easily connect to existing networks or function as its own access point.

Programming and Development

Support for OTA (Over-The-Air) programming is a standout feature, permitting wireless updates for both your Arduino sketches and the Wi-Fi module's firmware, streamlining remote deployment and maintenance. The board retains the familiar Uno footprint with 14 digital I/O pins (6 usable as PWM outputs), 6 analogue inputs, a 16 MHz ceramic resonator, USB connection, power jack, ICSP header, and a reset button. It is powered via USB or an external 7–12V source.

Technical Specifications

• Microcontroller: ATmega4809 (AVR core architecture)
• Operating Voltage: 5V
• Input Voltage (Recommended): 7–12V
• Digital I/O Pins: 20 (14 accessible on headers)
• PWM Digital I/O Pins: 5
• Analogue Input Pins: 6
• DC Current per I/O Pin: 20 mA
• Flash Memory: 48 KB
• SRAM: 6 KB
• EEPROM: 256 bytes
• Clock Speed: 16 MHz
• Connectivity: Integrated Wi-Fi with TCP/IP stack
• Security: ECC608 crypto chip
• Sensors: Onboard IMU