The analog section on the ESP32 is a far cry from the ESP8266’s single ADC input pin. There are three UARTs, three SPIs, two I2Ss, and two I2C busses. All of these participate in the I/O matrix ...

Macro keypads are a popular way of extending one’s input capabilities ... around an ESP32-S3 microcontroller, the ShortKeyboard features nine programmable function keys plus an analog joystick ...