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The Arduino® UNO R4 WiFi represents a significant leap forward in the UNO family, incorporating cutting-edge technology to provide a 32-bit microprocessor and integrated Wi-Fi® connectivity. This board uses the Renesas RA4M1 series microcontroller (R7FA4M1AB3CFM#AA0), which features a 48 MHz Arm® Cortex®-M4 CPU to deliver robust performance for a variety of applications.The board operates at 5V, powered by the RA4M1 microcontroller, while the ESP32-S3 Wi-Fi® module (model: ESP32-S3-MINI-1-N8) runs on 3.3V. To ensure smooth and reliable communication between the two components, a logic-level translator (TXB0108DQSR) is used to bridge the voltage differences.

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