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IoT-For-Beginners/1-getting-started/lessons/4-connect-internet/code-telemetry/pi/nightlight/app.py

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import time
from grove.grove_light_sensor_v1_2 import GroveLightSensor
from grove.grove_led import GroveLed
import paho.mqtt.client as mqtt
import json
light_sensor = GroveLightSensor(0)
led = GroveLed(5)
id = '<ID>'
client_telemetry_topic = id + '/telemetry'
client_name = id + 'nightlight_client'
mqtt_client = mqtt.Client(client_name)
mqtt_client.connect('test.mosquitto.org')
mqtt_client.loop_start()
print("MQTT connected!")
while True:
light = light_sensor.light
telemetry = json.dumps({'light' : light})
print("Sending telemetry ", telemetry)
mqtt_client.publish(client_telemetry_topic, telemetry)
time.sleep(5)