Hi Jonathan,

Thanks for the script I like it and using it to monitor T&H on a DHT22 connected to an RPi.
For some reason I receive the T&H data in the csv output but not visible in MQTT - only the Temp data.
If you have time and willing to help can you please take a look at the script?

Thanks in advance
Tom

import Adafruit_DHT
import paho.mqtt.client as paho
import os
import time

Define constants

Sensor type (Adafruit_DHT.DHT11 or Adafruit_DHT.DHT22)

DHT_SENSOR = Adafruit_DHT.DHT22

Configure GPIO pins

CUPBOARD_PIN = 2
#FLOOR_PIN = 4
#WASHINGMACHINE_PIN = 27

MQTT details

MQTT_BROKER="192.168.1.131"
MQTT_PORT=1883

Output file name

LOGFILE = "/home/pi/sensors.csv"

##########################################################

Only edit below if you know what you're doing!

##########################################################

def on_publish(client,userdata,result): #create function for callback
print("data published \n")
pass
client1= paho.Client("control1") #create client object
client1.on_publish = on_publish #assign function to callback
client1.connect(MQTT_BROKER,MQTT_PORT) #establish connection

try:
f = open(LOGFILE, 'a+')
if os.stat(LOGFILE).st_size == 0:
f.write('Date,Time,Sensor,Temperature,Humidity\r\n')
except:
pass

cupboardHumidity, cupboardTemperature = Adafruit_DHT.read_retry(DHT_SENSOR, CUPBOARD_PIN)
#floorHumidity, floorTemperature = Adafruit_DHT.read_retry(DHT_SENSOR, FLOOR_PIN)
#washingMachineHumidity, washingMachineTemperature = Adafruit_DHT.read_retry(DHT_SENSOR, WASHINGMACHINE_PIN)

if cupboardHumidity is not None and cupboardTemperature is not None:
ret= client1.publish("akna/temperature","{0:0.1f}".format(cupboardTemperature))
ret= client1.publish("akna/humidity","{0:0.1f}".format(cupboardHumidity))
f.write('{0},{1},akna,{2:0.1f}*C,{3:0.1f}%\r\n'.format(time.strftime('%y-%m-%d'), time.strftime('%H:%M'), cupboardTemperature, cupboardHumidity))
else:
ret= client1.publish("kitchen/cupboard/temperature","FAILED")
print("Failed to retrieve data from cupboard sensor")

#if floorHumidity is not None and floorTemperature is not None:
ret= client1.publish("kitchen/floor/temperature","{0:0.1f}".format(floorTemperature))
ret= client1.publish("kitchen/floor/humidity","{0:0.1f}".format(floorHumidity))
f.write('{0},{1},Floor,{2:0.1f}*C,{3:0.1f}%\r\n'.format(time.strftime('%y-%m-%d'), time.strftime('%H:%M'), floorTemperature, floorHumidity))
#else:
ret= client1.publish("kitchen/floor/temperature","FAILED")
print("Failed to retrieve data from floor sensor")

#if washingMachineHumidity is not None and washingMachineTemperature is not None:
ret= client1.publish("kitchen/washing-machine/temperature","{0:0.1f}".format(washingMachineTemperature))
ret= client1.publish("kitchen/washing-machine/humidity","{0:0.1f}".format(washingMachineHumidity))
f.write('{0},{1},Washing-Machine,{2:0.1f}*C,{3:0.1f}%\r\n'.format(time.strftime('%y-%m-%d'), time.strftime('%H:%M'), washingMachineTemperature, washignMachineHumidity))
#else:
ret= client1.publish("kitchen/washing-machine/temperature","FAILED")
print("Failed to retrieve data from washing-machine sensor")

def on_disconnect(client, userdata, rc):
print("client disconnected ok")
client1.on_disconnect = on_disconnect
client1.disconnect()