from umqtt.simple import MQTTClient
import utime

MQTT_SERVER = "mqtt.eclipse.org"
MQTT_TOPICS = b"ESP32/LED00"
MQTT_CLIENT_ID = b"esp32_01"

client = MQTTClient(MQTT_CLIENT_ID, MQTT_SERVER) 
client.connect()  # bZ[WEu[Jɐڑ

try:
    while True:
        print("ON")
        client.publish(MQTT_TOPICS, b"ON")  # LEDFOnɑ삷郁bZ[W𑗐M
        utime.sleep(1)
        print("OFF")
        client.publish(MQTT_TOPICS, b"OFF")  # LED:Offɑ삷郁bZ[W𑗐M
        utime.sleep(1)
finally:
    client.disconnect()