Description
The Uno R4 WiFi keeps the classic Uno layout and shield compatibility, and adds a 32-bit Arm Cortex-M4 (Renesas RA4M1) plus an ESP32-S3 module for Wi-Fi and Bluetooth. It’s a good fit for connected student projects, dashboards and IoT prototypes.
- MCU: Renesas RA4M1 (Arm Cortex-M4, 48 MHz)
- Connectivity: Wi-Fi + Bluetooth LE (ESP32-S3)
- USB-C, 12×8 LED matrix, Qwiic connector
- Uno R3 shield footprint








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