If you use the Arduino IDE to program the ESP32, you might be interested in [Andreas Spiess’] latest video (see below). In it, he shows an example of using all three ESP32 UARTs from an Arduino ...
Adafruit has unveiled a new addition to their range in the form of the Adafruit Metro Mini 328 that has been designed dot provide a USB-to-Serial connection. The Adafruit Metro Mini 328 takes the form ...