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 Ardui… ...

Hackaday regular [befinitiv] wrote into the tip line to let us know about a hack you might enjoy, wireless UART output from a bare STM32 microcontroller. Desiring the full printf debugging experien… ...

Prestissimo Uno+ Arduino dev board with extra I2C UART SPI ADC IO and ... the “SoftwareSerial” library in included in the Arduino IDE. ... as there is an additional hardware serial port.