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// UBDS-ARDUINO-UNO-R4-WIFIMCUbeginnerLast verified 2026-04-07

Arduino Uno R4 WiFi

Arduino

Classic Uno form factor with a Renesas RA4M1 Cortex-M4 at 48 MHz plus an ESP32-S3 wireless co-processor for Wi-Fi and Bluetooth LE. Backwards- compatible with Uno shields and the standard Arduino IDE workflow.

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Arduino Uno R4 WiFi
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