sensor DHT22 on Fibaro Universal Sensor, is possible?

[bigpea]

Hi,
as you know, is possible to use the sensor DHT22 on the Fibaro Universal Sensor (http://manuals.fibaro.com/binary-sensor/)?

In the manual just talking only for DS18B20 sensor, but i want to know also the humidity percentage.

Thanks.

[LouiS22]

I really don't think it's possible.

[mischa]

Although the DHT-22 uses a single-wire to send data it is not Dallas One Wire compatible! You can only use a DS18B20 on the universal sensor.
If you want to measure humidity then use the DHT-22 with Mysensors for example.

[bigpea]

ok thanks, i will start my research

[blackdog65]

Hi bigpea,

I use esp8266 now for all my temp/humidity sensing (except where a unit has built in sensors) and I find them to be very cheap and reliable.

See http://www.esp8266.nu/index.php/HumiditySensor for more information.

I'm currently building an en-suite bathroom between my 2 boy's rooms and have an esp8266 12e controlling the lights, heated mirror, extractor fan, and 2 door locks. It also runs a DHT22 in the shower cubicle that will decide when to run the extractor fan.

I have a few Fibaro Universal Sensors fitted but I'm replacing them with the ESP units.
I'm a bit disappointed with the binary sensors as they have so much potential... if you could control the outputs!

Good luck
Sean

[bigpea]

very good I like it!
So, simply, I can:
- buy the esp8266 module;
- buy dht22 sensor;
- change firmware of esp8266 with ESP Easy;
- link these two;
- add in domoticz a new hardware "MySensorGateway with LAN Interface" (but i will use the WiFi, is correct?)

It's all?

[blackdog65]

Close,
the last steps are
- create a "Dummy" in hardware (mine is called "ESP")
- create a virtual temp/humidity sensor in "ESP" and note the device idx
- set domoticz ip parameters in espeasy
- set device idx in espeasy
The esp unit will then send regular readings to the virtual device... job done

The big bonus is that the esp has further GPIO pins available so a spare can be used to control a relay.
i.e. Humidity >50% turn on fan. This is done again with a virtual switch (simple on/off) from the "ESP" hardware dummy and a On/Off Action command such as

Code: Select all

http://ESP_IP_ADDRESS/control?cmd=GPIO,2,0

Code: Select all

http://ESP_IP_ADDRESS/control?cmd=GPIO,2,1

to toggle (in this example) GPIO pin 2 to operate a relay.

[bigpea]

ok perfect, many thanks!

[blackdog65]

If you do go for the esp route,
I'd recommend starting with one of these https://www.amazon.co.uk/HiLetgo-NodeMC ... 66+nodemcu to try as they have 5v as well as 3v3, usb for power, usb for flashing rather than an extra seperate pcb and extra gpios.