Prerequisites for client
sudo apt-get install python3 python3-pip
sudo pip3 install paho-mqtt
Python script:
#!/usr/bin/python3
#Imports
import time
import os
import paho.mqtt.client as mqtt
import paho.mqtt.publish as publish
#Variable setups
broker = "IP Address MQTT Broker"
state_topic = "pi/cputemp" #Topic to publish commands too
delay = 1 #Time delay
#Fuction to return temp
def measure_temp():
temp = os.popen("vcgencmd measure_temp").readline()
return (temp.replace("temp=",""))
#MQTT connection setup
client = mqtt.Client()
client.username_pw_set("username", "password") #Login for broker
client.connect(broker)
client.loop_start()
#While loop for posting to MQTT
while True:
print(measure_temp())
time.sleep(1)
cpu_temp = measure_temp()
client.publish("pi/cputemp", str(cpu_temp))
time.sleep(delay)
