1. **Performance and Memory**: - **Arduino UNO R4 WiFi**…

chryptof ·

1. **Performance and Memory**:
- **Arduino UNO R4 WiFi**: It has a more powerful processor (ARM Cortex-M4, 48 MHz) and significantly more memory (256KB flash, 32KB SRAM)[1][3].
- **Arduino UNO R3**: Uses an 8-bit MCU (ATmega328P, 16 MHz) with less memory (32KB flash, 2KB SRAM)[1][3].