UNO REV 4 Boards

Arduino UNO REV 4 Boards feature two versions, the UNO R4 Wi-Fi® and UNO R4 Minima. The Renesas RA4M1 32-bit Arm® Cortex®-M4 processor powers Arduino UNO REV 4 Boards. These boards offer impressive processing power, memory capacity and overall functionality. The UNO R4 Wi-Fi incorporates an Espressif S3 Wi-Fi module. The UNO R4 Minima is cost-effective without compromising the microcontroller's core capabilities. The UNO R4 maintains the same form factor, shield compatibility and 5V operating voltage as the UNO R3.