from machine import Pin
import time
relay = Pin(23, Pin.OUT)
while True:
relay.value(1) # bật relay
time.sleep(2)
relay.value(0) # tắt relay
time.sleep(2)from machine import Pin
import time
relay = Pin(23, Pin.OUT)
while True:
relay.value(1) # bật relay
time.sleep(2)
relay.value(0) # tắt relay
time.sleep(2)