Read more: Battery Brands Ranked From Worst To Best The Arduino Uno Rev3 is the ... ports and I2C buses. The Rev3 has a single serial connection, shared by the USB port and the RX/TX pins.

The board itself also has some differences from the original Arduino Uno. First of all, it has a USB type-C port, which is definitely a bonus. Secondly, it’s simpler: No USB-UART (which also ...