quick and dirty button to trigger a random number generator for an exam type situation...

bigboibuton.ino

#include "Keyboard.h"

const int buttonPin = 10;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  Keyboard.begin();
}

void loop() {
  if(digitalRead(buttonPin)==LOW)
  {
    delay(100); //debounce
    Keyboard.println("python3 rando.py 4");
    while(digitalRead(buttonPin)==LOW);
  }
}