Part 2 of Many DHT11 and some Math

kleynhansjacques · October 29, 2019, 6:38pm

Was working but now, I get

Disconnected with result code 1
Connected with result code 0
SUB v1/da9e1390-e819-11e9-8221-599f77add412/things/11c78520-f5cd-11e9-a38a-d57172a4b4d4/cmd/+
PUB v1/da9e1390-e819-11e9-8221-599f77add412/things/11c78520-f5cd-11e9-a38a-d57172a4b4d4/sys/model Python
PUB v1/da9e1390-e819-11e9-8221-599f77add412/things/11c78520-f5cd-11e9-a38a-d57172a4b4d4/sys/version 1.1.0
PUB v1/da9e1390-e819-11e9-8221-599f77add412/things/11c78520-f5cd-11e9-a38a-d57172a4b4d4/data/1 temp,c=13
PUB v1/da9e1390-e819-11e9-8221-599f77add412/things/11c78520-f5cd-11e9-a38a-d57172a4b4d4/data/2 lum,lux=130
PUB v1/da9e1390-e819-11e9-8221-599f77add412/things/11c78520-f5cd-11e9-a38a-d57172a4b4d4/data/3 bp,hpa=813
Disconnected with result code 1
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5
Caught exception in on_connect: Connection failed, not authorized
Disconnected with result code 5

kleynhansjacques · October 29, 2019, 6:41pm

Ok I deleted my origional sensor widger and added a new widget for the example. Working again now

shramik_salgaonkar · October 29, 2019, 6:53pm

great. now try this code and see if you get DHt reading:

github.com

adafruit/Adafruit_Python_DHT/blob/master/examples/simpletest.py

#!/usr/bin/python

# Copyright (c) 2014 Adafruit Industries
# Author: Tony DiCola

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

This file has been truncated. show original

kleynhansjacques · October 29, 2019, 7:02pm

ok working, humidity is way off but the sensor works…

Temp=22.0*C Humidity=17.0%

shramik_salgaonkar · October 30, 2019, 10:52am

now combine both the codes:

#!/usr/bin/env python
import cayenne.client
import time
import logging

import Adafruit_DHT

# Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
MQTT_USERNAME  = "xxx"
MQTT_PASSWORD  = "xxxx"
MQTT_CLIENT_ID = "xxx"


sensor = Adafruit_DHT.DHT11

pin = 23

# The callback for when a message is received from Cayenne.
def on_message(message):
print("message received: " + str(message))
# If there is an error processing the message return an error string, otherwise return nothing.

client = cayenne.client.CayenneMQTTClient()
client.on_message = on_message
client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, loglevel=logging.INFO)
# For a secure connection use port 8883 when calling client.begin:
# client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, port=8883, loglevel=logging.INFO)

i=0
timestamp = 0

while True:
client.loop()
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)

if (time.time() > timestamp + 10):
    client.virtualWrite(3, 10, "temp", "c" )
        if temp11 is not None:
            client.virtualWrite(1, temp11, "temp", "c" )
        else:
            print("temp error")
        if humidity11 is not None:
            client.virtualWrite(2, humidity11, "rel_hum", "p")
        else:
            print("humidity error")
    timestamp = time.time()
    i = i+1

shramik_salgaonkar · October 30, 2019, 11:09am

the final code works for me:

#!/usr/bin/env python
import cayenne.client
import time
import logging
import math

import Adafruit_DHT

# Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
MQTT_USERNAME  = "xxxx"
MQTT_PASSWORD  = "xxxx"
MQTT_CLIENT_ID = "xxx"


sensor = Adafruit_DHT.DHT11

pin = 18

# The callback for when a message is received from Cayenne.
def on_message(message):
    print("message received: " + str(message))
    # If there is an error processing the message return an error string, otherwise return nothing.

client = cayenne.client.CayenneMQTTClient()
client.on_message = on_message
client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, loglevel=logging.INFO)
# For a secure connection use port 8883 when calling client.begin:
# client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, port=8883, loglevel=logging.INFO)

i=0
timestamp = 0

while True:
    client.loop()
    humidity11, temp11 = Adafruit_DHT.read_retry(sensor, pin)
#    client.virtualWrite(1, temp11, "temp", "c" )

    if (time.time() > timestamp + 10):
        client.virtualWrite(1, 10, "temp", "c" )
        if temp11 is not None:
            client.virtualWrite(1, temp11, "temp", "c" )
        else:
            print("temp error")
        if humidity11 is not None:
            client.virtualWrite(2, humidity11, "rel_hum", "p")
        else:
            print("humidity error")
        if temp11 is not None and humidity11 is not None:
            VPDME=((6.1078*math.exp(17.08085*temp11/(234.175+temp11)))-(6.1078*math.exp(17.08085*temp11/(234.175+temp11))*(humidity11/100)))/10.
            print(VPDME)
            client.virtualWrite(2, humidity11, "pressure", "kpa")
        else:
            print("VPDME error")
        timestamp = time.time()
        i = i+1

kleynhansjacques · October 31, 2019, 6:21pm

Quick Question:

I see both the temp and timer is writing the channel 1:

    if (time.time() > timestamp + 10):
        client.virtualWrite(1, 10, "temp", "c" )
        if temp11 is not None:
            client.virtualWrite(1, temp11, "temp", "c" )

Also, the next to statements are also writing to the same channel:

        if humidity11 is not None:
            client.virtualWrite(2, humidity11, "rel_hum", "p")
        else:
            print("humidity error")
        if temp11 is not None and humidity11 is not None:
            VPDME=((6.1078*math.exp(17.08085*temp11/(234.175+temp11)))-(6.1078*math.exp(17.08085*temp11/(234.175+temp11))*(humidity11/100)))/10.
            print(VPDME)
            client.virtualWrite(2, humidity11, "pressure", "kpa")

Is it safe to say I can leave the first if as is and change the humidity and vpdme to:

        if humidity11 is not None:
            client.virtualWrite(2, humidity11, "rel_hum", "p")
        else:
            print("humidity error")
        if temp11 is not None and humidity11 is not None:
            VPDME=((6.1078*math.exp(17.08085*temp11/(234.175+temp11)))-(6.1078*math.exp(17.08085*temp11/(234.175+temp11))*(humidity11/100)))/10.
            print(VPDME)
            client.virtualWrite(3, VPDME, "pressure", "kpa")

kleynhansjacques · October 31, 2019, 6:27pm

I get this traceback when I run the script:

Traceback (most recent call last):
File “shramik.py”, line 25, in
client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, loglevel=logging.INFO)
TypeError: begin() got an unexpected keyword argument ‘loglevel’

shramik_salgaonkar · October 31, 2019, 6:30pm

how is that possible. you said it was working previously. Can you just copy and paste code from combine code to the code that was working.

it is not included in the code, it is commented.

Sorry, my bad. You need to use a different channel numbers for each widget and change humidity and vpdme.

kleynhansjacques · October 31, 2019, 6:36pm

Ill run through the last code again and let you know in a moment.

kleynhansjacques · October 31, 2019, 7:18pm

Ok so what I found was"

running script with sudo python shramik.py i get (same without sudo)

Traceback (most recent call last):
File “shramik.py”, line 24, in
client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, loglevel=logging.INFO)
TypeError: begin() got an unexpected keyword argument ‘loglevel’

running script with sudo python3 shramik.py i get:

Traceback (most recent call last):
File “shramik.py”, line 6, in
import Adafruit_DHT
ImportError: No module named ‘Adafruit_DHT’

running sudo python3 Example-03-CayenneClient.py works perfectly no issues.

adafruit/Adafruit_Python_DHT/blob/master/examples/simpletest.py Also works perfectly

kleynhansjacques · October 31, 2019, 7:20pm

Another difference is that I am running the two scripts from different location, one is in /home/pi/python/ and the other is /home/pi/Cayenne-MQTT-Python

kleynhansjacques · October 31, 2019, 7:29pm

more info:

pi@Bettie-Pi:~ $ python
Python 2.7.13 (default, Sep 26 2018, 18:42:22)
[GCC 6.3.0 20170516] on linux2
Type “help”, “copyright”, “credits” or “license” for more information.

kleynhansjacques · October 31, 2019, 7:37pm

maybe something to do with the shebang #!/usr/bin/env python ?

shramik_salgaonkar · November 1, 2019, 7:13am

try sudo pip3 install Adafruit_DHT and then run sudo python3 shramik.py

kleynhansjacques · November 1, 2019, 7:21am

Do I run that command in the existing Adafruit folder ? Also, I see my version of python is 2.7 will the python3 command worlk ?

shramik_salgaonkar · November 1, 2019, 9:37am

if this works then?? you can run it anywhere you want.

kleynhansjacques · November 1, 2019, 11:58am

Thanks for the help I really do appreciate it, just frustrating that the seperaly the work perfectly but combined there is a issue.

shramik_salgaonkar · November 1, 2019, 12:10pm

did you try this?

kleynhansjacques · November 1, 2019, 12:57pm

Not yet, will try when I get home from work work. Will let you know.

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Part 2 of Many DHT11 and some Math

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