How to connect an Arduino to a real serial port (RS232) For the challenge, I wanted to send data from my computer's real serial port (RS232 9-pin connector). For that, I created an adaptor circuit ...

Connect your arduino to computer through USB and upload scetch.ino to it, check that arduino respond to your commands in arduino IDE built in serial port The solution is based on the Serial API ...

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.

If an Arduino port is not showing up, your USB connection might be faulty or the ports may be disabled entirely. We will show you how to enable a port in Arduino and look it up in the Device Manager.

This is the simple method to setup serial communication between Arduino and MATLAB. Here we will simply send the data from MATLAB to the Arduino serially using command window and then Arduino read the ...