This is a console app written in C# to connect your own Arduino to a MySQL database (local). With this console app, you can get the readings from the Arduino to the DB by using the serial port, so ...

library I/O ports - serial port communication in C# using the .NET framework. library serial arduino -communication between the Arduino board and a computer or other devices.

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.

Introduction:In Arduino environment, it's convenient to access BT SPP like a serial port and react to the command string sent from the BT serial port. Many Arduino projects have utilized this way ...