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Arduino UNO R4 WiFi

Arduino UNO board with WiFi (5 V)

Released 2023

The next-gen UNO has WiFi out of the box and runs at 5 V — compatible with classic UNO shields and sensors. The code comes ready using only the libraries that already ship with the board.

Chip Renesas RA4M1 (Cortex-M4) + ESP32-S3 (radio)

Clock 48 MHz (RA4M1)

Memory 32 KB RAM · 256 KB flash

Connectivity WiFi 2.4 GHz + BLE (via ESP32-S3)

GPIO 14 digital · 6 analog · DAC · CAN · 12×8 LED matrix

Logic level 5 V (compatible with the classic UNO)

Programmed in Arduino IDE (built-in WiFiS3 library)

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Good to know 5 V logic: 3.3 V sensors may need a divider/level shifter.

Sensors that pair well

Air temperature Air humidity Distance Noise / sound level Any analog value

⚡ Generate my code View pinout ↗

source: docs.arduino.cc · Arduino datasheet ↗