Universal Asynchronous Receiver-Transmitter

UART is a Serial Communication interface. I think this is probably a good thread to understand the differences:

This is used very synonymously with RS-232, but they are not the same: https://electronics.stackexchange.com/questions/110478/difference-between-uart-and-rs-232/110479#110479

A universal asynchronous receiver-transmitter is a computer hardware device for asynchronous serial communication in which the data format and transmission speeds are configurable.

one tx or rx wire one ground reference

we need a common configuration

  • Transmission speed
  • Data length
  • Start / stop bits 9600 bauds/second

oooh Arduino

What about USB?