Arduino Uno WiFi Rev2

Arduino Uno WiFi Rev2 is an Uno Microcontroller Board with an integrated WiFi module. The Uno WiFi Rev2 is based on the Microchip Technology ATmega4809 8-Bit Microcontroller. WiFi 802.11b/g/n connectivity is provided by an onboard u-blox NINA-W13 Module. The NINA-W13 Module is a self-contained System-on-Chip (SoC) with an integrated TCP/IP protocol stack, enabling access to a WiFi network. The device can also act as an access point. The Uno WiFi Rev2 also features OTA (over-the-air) programming support, either for the transfer of Arduino sketches or WiFi firmware.

The Uno WiFi Rev2 is designed to ease the deployment of applications that need WiFi connectivity using the classic Arduino form factor and is ideal for emerging IoT (Internet of Things) industries such as automotive, agriculture, consumer electronics, smart home, and wearables. Among its other features, the ATmega4809 provides 6KB of RAM, 48KB of Flash, three UARTS, Core Independent Peripherals (CIPs), and an integrated high-speed ADC. Combined with the onboard Microchip Technology ECC608 CryptoAuthentication IC, the Microcontroller provides hardware-based security for connecting projects to the cloud, including AWS and Google.


  • 14 digital I/O pins
    • 6 provide PWM output
  • 6 analog inputs
  • 16MHz ceramic resonator
  • USB connection
  • Powered via USB connection or with an external power supply
  • ICSP (In-Circuit Serial Programming) header
  • Reset button


Published: 2018-07-30 | Updated: 2023-06-27