import time
from machine import Pin
time.sleep(0.1) # Wait for USB to become ready
led=Pin("LED",Pin.OUT)

while(True):
    led.on()
    time.sleep(0.15)
    led.off()
    time.sleep(0.1)
    led.on()
    time.sleep(0.15)
    led.off()
    time.sleep(2)