Digispark + PIR Sensor : PC wakeup

DigisparkRandomMouse.ino

#include <DigiMouse.h>

#define LED 1
#define PIR 0

void setup() {
  DigiMouse.begin();
  pinMode(LED, OUTPUT);
  pinMode(PIR, INPUT);
}

const int len=1;
int x,y,a;
int ct=1;
void loop() {
  a=digitalRead(PIR);
  if (a) {
    x=random(-1,1)*len;
    y=random(-1,1)*len;
    DigiMouse.moveX(x);
    DigiMouse.moveY(y);
    DigiMouse.delay(500);
    digitalWrite(LED, ct&1);
  } else {
    digitalWrite(LED, 0);
  }
  delay(2000);
  ct++;
}