from machine import Pin
import time               # time library

led1=Pin(9,Pin.OUT)   #declare led at pin GP9
led1.on()    #led1
print("starting...")
time.sleep(1)   #delay 1 sec

while 1:
    
     led1.value(0)
     print("led off")
     time.sleep(0.05)
     led1.value(1)
     print("led on")
     time.sleep(0.05)