DHT22 MQTT

[outrun0506]

Hi,

i flashed your Sketch, and it seems to work.

After my setup in Home Assistant, humidity keeps saying unknow.

Heres the Output from the IDE-Serial Monitor:

.........
INFO: WiFi connected
INFO: IP address: 
192.168.0.59
INFO: Attempting MQTT connection...INFO: connected
{
  "temperature": "22.80",
  "humidity": "34.10"
}
INFO: Closing the MQTT connection
INFO: Closing the Wifi connection

Temperature works fine.

Thanks for help

BR

Lukas

[SamZorSec]

Hi Lukas, Thank you for your message. The output is correct and the MQTT message is received by Home Assistant (it works for the temperature). There is probably a problem when HA tries to extract the humidity from the payload of the MQTT message. I can not test anything now, but you should find some help at the bottom of this page.

Are you using the same topic for the humidity sensor?

sensor 1:
  platform: mqtt
  state_topic: 'office/sensor1'
  name: 'Temperature'
  unit_of_measurement: '°C'
  value_template: '{{ value_json.temperature }}'

sensor 2:
  platform: mqtt
  state_topic: 'office/sensor1'
  name: 'Humidity'
  unit_of_measurement: '%'
  value_template: '{{ value_json.humidity }}'

Best regards, Sam

[ssolmaz]

Hi Sam, I'm using this sketch and there is no problem. I have two dht22 sensors. One of them always shows humidity 1. This sensor is the same in a different sketch. I guess the humidity sensor is broken. I would recommend using a different sensor or try it with a test sketch (without mqtt, only serial monitor).

Hi Lukas, Thank you for this work. I use Sensor_dht22, light, light_with_brightness sketchs. I will use other sketch :) See you...

[outrun0506]

Hi Sam,

thanks for helping me out on this Topic,

Heres my HA-Config for this Sensor:

- platform: mqtt
  state_topic: 'sensor/esszimmer/dht22'
  name: "Temperatur Esszimmer"
  unit_of_measurement: '°C'
  value_template: '{{ value_json.temperature }}'

- platform: mqtt
  state_topic: sensor/esszimmer/dht22'
  name: "Luftfeuchte Esszimmer"
  unit_of_measurement: '%'
  value_template: '{{ value_json.humidity }}'

In my Mosuitto-DB i have following entry:

esszimmer_dht22 sensor/esszimmer/dht22 *{"temperature":"18.90","humidity":"40.60"}

So it looks like your Sketch reports Values from DHT correctly but HA is not able to read the Topic.

I'll do some research on this, or do you have a tip to point me in the right direction?

Since it looks like, your Sketch is working fine, i think we can close the issue.

Thanks for help, and your awesome work with your Sketches, providing to all of us!

BR

Lukas

[outrun0506]

Oh my god...

Sorry guys for taking your Time.

I just found the issue -- it was my fault.

I had a missing ' in my sensor.yaml in the state_topic for the humidity. I just looked on it about 1000 times and did not see it...

Really sorry Guys.

@mertenats Thanks for your great work and sorry for inconvenience.

BR

Lukas