Using Laptop Keyboard to Trigger Interrupt

This is not hard. Your description didn't seem to be asking after that; the product I linked is totally off topic.

You can talk and listen to the Arduino from the PC using a terminal emulator, or a program you write for the PC that uses serial communications.

Start with PuTTY or CoolTerm, respected terminal programs.

Read


For smarter stuff on the PC or MacOS side, look into Processing:

Visualization with Processinf and Arduino.


As for buttons without interrupts, work through the basic examples on offer in the Arduino IDE. You will see no mention of interrupts while you program buttons and LEDs to do, well, just about anything you could think of.

a7