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import machine
from machine import Timer
from machine import Pin
#from time import sleep
led = machine.Pin(16, machine.Pin.OUT)
greenled = machine.Pin(17, machine.Pin.OUT)
led25 = machine.Pin("LED", machine.Pin.OUT)
#relaypin = Pin(20, Pin.OUT)
led.off()
led.on()
timer=Timer()
greenled.off()
#rtc = machine.RTC()
#rtc.datetime((2024, 10, 18, 2, 4, 33, 0, 0))
# (year, month, day, weekday, hours, minutes, seconds, subseconds)
#print(rtc.datetime())


def blink(timer):
    led25.toggle()

#relaypin.value(1)
    print("0")
#sleep(5)
#relaypin.value(0)

#sleep(5)
    print("1")

timer.init(freq=0.5, mode=Timer.PERIODIC, callback=blink)