In it, he shows an example of using all three ESP32 UARTs from an Arduino program. He calls the third port “secret” although that’s really a misnomer.

It's now Arduino IDE 2.2.0. The new features include Board and Port auto-selection improvements, performance improvements, a smaller download size, and a new CLI (command line interface) version.

Just a quick one to note: Arduino has updated its Integrated Development Environment (IDE) for programming its devices. It’s now Arduino IDE 2.2.0. The new features include Board and Port ...