serial - TX pin sends wrong data in Arduino Uno - Arduino Stack Exchange
The Arduino's TX and RX pins are used for UART communication. From The Components of an Arduino Uno PCB - https://www.circuitbasics.com/... | Instagram
3.3v / 5v pins RX/TX confusion on arduino Mega / Uno / Micro - Project Guidance - Arduino Forum
Serial communication using Rx/Tx pins - Project Guidance - Arduino Forum
TX RX between Arduinos - Programming Questions - Arduino Forum