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Arduino Uno WiFi Rev2
Product Overview
The Arduino Uno WiFi Rev2 from Pro Tronix is a significant upgrade to the world’s most popular microcontroller. While it maintains the exact footprint and 5V logic of the classic Uno R3, it is powered by the more advanced ATmega4809 microcontroller, providing more memory for your code and data.
Designed for the modern maker, it integrates a u-blox® NINA-W102 module that provides both WiFi and Bluetooth (BLE) connectivity. To make it a true IoT powerhouse, Arduino added a hardware crypto-chip (ATECC608A) for secure cloud communication and an onboard 6-axis IMU (Inertial Measurement Unit), allowing the board to detect motion, tilt, and orientation right out of the box without extra shields.
Technical Specifications
| Feature | Specification |
| Microcontroller | ATmega4809 (8-bit AVR) |
| Clock Speed | 16 MHz |
| Connectivity | WiFi & Bluetooth (u-blox® NINA-W102) |
| Sensors | 6-axis IMU (LSM6DS3TR Accel/Gyro) |
| Operating Voltage | 5V |
| Memory | 48KB Flash |
| I/O Pins | 14 Digital (5 PWM), 6 Analog |
| Security | ATECC608A Cryptographic Co-processor |
| Interfaces | 1 Hardware UART (Separate from USB), I2C, SPI |
| Supplier | Pro Tronix |
Key Features
Upgraded Processor: The ATmega4809 offers 50% more Flash memory and 3x the SRAM of the standard Uno, enabling larger and more complex IoT sketches.
Plug-and-Play IoT: Fully compatible with the Arduino IoT Cloud for remote monitoring and Over-The-Air (OTA) firmware updates.
Built-in Motion Sensing: The integrated IMU makes this board ideal for step counters, fall detectors, or stabilizing simple robots without extra wiring.
Dual Radio: Supports both WiFi for internet connectivity and Bluetooth Low Energy (BLE) for interacting with smartphones or tablets.
Secure Connection: The hardware crypto-chip handles ECC and SHA-256 encryption, allowing for secure connections to AWS, Google Cloud, and Azure.
Common Applications
Home Automation: Creating a secure smart hub that controls 5V relays via a mobile app or web dashboard.
Educational IoT: The perfect platform for teaching wireless communication and sensor integration in a robust, familiar form factor.
Industrial Monitoring: Tracking machine vibration and temperature, then uploading data securely to a central server.
Wearable Prototypes: Utilizing the IMU and BLE for motion-tracking gadgets or health monitors.
💡 Compatibility Note: While it uses the ATmega4809, the board is designed with a compatibility layer so you can run almost all existing Uno R3 sketches without modification.
