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    Python code to power on/off your MM-lcd and to mqtt motion

    Scheduled Pinned Locked Moved Unsolved Troubleshooting
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    • C Offline
      Cupola
      last edited by Cupola

      Hello to everyone, this is my first post in the forum, please take that into consideration :D …
      So I have MM working on a pi zero w, I’ve modded the lcd to be able to power on and off the backlight using one of the Gpio using a python code on startup.
      The problem is that I’m having some problems, recently I’ve implemented in the same python code the sending of an mqtt message status every time the PIR is trigged ON or goes OFF, the fact is that time by time, let’s say every 24h the pi get stuck…
      This is the code:

      #!/usr/bin/env python
      
      from time import time, sleep
      import datetime
      import os                 
      import RPi.GPIO as GPIO
      import urlparse
      import paho.mqtt.client as paho
      
      # Time to wait (in seconds)
      ttw=59
      cttw=ttw
      
      # Setup Gpio
      # GPIO.setwarnings(False)
      GPIO.setmode(GPIO.BCM)
      GPIO.setup(23, GPIO.IN)         #Output PIR
      GPIO.setup(25, GPIO.OUT)
      
      # Mqtt
      #mqttc = mosquitto.Mosquitto()
      mqttc = paho.Client()
      
      url_str = 'mqtt://192.xxx.yyy.zzz:1883'
      url = urlparse.urlparse(url_str)
      mqttc.username_pw_set("xxxx", "yyyyyy")
      
      def sendmqtt(mess):
          print "Send mqtt"
          now = datetime.datetime.now()
          mqttc.connect(url.hostname, url.port)
      #   mqttc.publish("pir/kitchen", str(now) + mess)
          mqttc.publish("pir/kitchen", mess)
      
      while True:
          i=GPIO.input(23)
          if i==0:                 #When output from motion sensor is LOW, no movement
              cttw-=1
              print cttw
              if cttw==0: # Counter has reached zero
                  print "Counter is 0"
                  sendmqtt("OFF")
                  GPIO.output(25, False)
                  cttw=ttw    # Reset counter
      
          elif i==1:               #When output from motion sensor is HIGH, movement detected
              print "Motion detected"
              cttw=ttw   
              sendmqtt("ON")
              GPIO.output(25, True)
              sleep(1)    
          sleep(1)
      
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      • C Offline
        Cupola
        last edited by

        I’m a total noob at coding so really every kind of suggestion is appreciated

        1 Reply Last reply Reply Quote 0
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