#include <Keyboard.h>

boolean butt_flag = 0;
unsigned long last_press;
boolean butt;

void setup() {
  Serial.begin(9600);
  pinMode(8, INPUT_PULLUP);
  pinMode(10, OUTPUT);
}

/*void btn1() { //Эмуляция 0 кнопка
  Keyboard.write('N');
  delay(200);
  digitalWrite(10, true);
} */

void loop() {

 Keyboard.begin();
  if ( digitalRead(8) == 0 && butt_flag == 0) {
    digitalWrite(10, true);
      butt_flag = 1;
  }

  if ( digitalRead(8) == 1 && butt_flag == 1) {
    digitalWrite(10, false);
     butt_flag = 0;
  }

}