This Arduino sketch enables serial communication to read user input from the Serial Monitor, including an integer, a floating-point number, and a string, and then echoes the input back.

README arduino_user_serial_input This module makes it easy to accept user input from the serial interface, displaying the input buffer in real time. Example: ...

The small Arduino UNO terminal sender program is made to transfer Serial terminal data to the ESP32 Serial terminal only. This sketch is also attached herewith for ready references.

An Arduino Uno provides the processing power and drives the serial monitor. A joystick and a Hitachi H48C accelerometer are mounted on a breadboard and wired to the Uno.