Connecting Fibaro HC2 to an ESP8266 - two tutorials

[ianbren 4]

Hi, I've had a few questions on how to use Fibaro HC2 to talk to ESP8266 devices.

 

If you're interested, the simple example over at

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can help.

 

there are two assumptions

- that you can create a Virtual Device in Fibaro and have used LUA before

- that you've got the Arduino environment to build and ESP8266 (of whatever flavour you want).

 

Basically, the solution has a Virtual Device with one button - press the button in Debug mode and the ESP8266 is called and returns with some JSON.

 

 

If there's interest, I'll expand the examples to include one for ESPEASY and a DHT11 - where you can build wifi-enabled temperture devices.

 

 

Cheers

 

Ian

 

Edited September 20, 2017 by ianbren
change of title

[ianbren 4]

201 is also posted now at

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Shows how a Fibaro HC2 can poll an ESP8266 and receive JSON data back - then post it to a label.

 

This is a work in progress and if there's interest I'll move on to ESPEASY - to monitor temperature.

 

 

[10der 101]

JFYI:

 

1) ESP8266 Serial ESP-12F Wi-Fi Witty Cloud Development Board + DHT22

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2) Code TemperatureHumidity.ino (see attach file TemperatureHumidity.ino)

3) FIBARO VD (see attach file Climate_ESP.vfib 

 

 

 

 

 

 

 

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Edited September 20, 2017 by 10der

[pablo77 5]

Hi,

 

On ESP8266 board You have Light sensor ( that thing in upper corner). Are You not using it in the skech ??

Edited September 20, 2017 by pablo77

[10der 101]

1 hour ago, pablo77 said:

Hi,

 

On ESP8266 board You have Light sensor ( that thing in upper corner). Are You not using it in the skech ??

 

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Perhaps you failed to pay attention to the arduino sketch file.

 

notice:

const char* WIFI_PASS = "id2891Sz500Qp";

 

it's fake WiFi password  but in any case - thank you and welcome to my home and Ukraine

 

 

[ianbren 4]

I like the Code - some suggestions...

(a) - you calculate Dewpoint - but don't return it in the HTML.

(b) the calculation is deferred every 15 seconds (in the main loop) - perhaps pull the constant out to the top to make it clear what's happening.

(c) you might want to consider starting up the DHT/reportreading  before calling the server.begin() - as it stands the HTML strings (humidityString etc) are empty and Fibaro may start polling before the first read.

Oh, and I love the icon model.

Oh, and I found the WITTY useful for the LDR, but getting access to the Digital pins is a pain for anything other than experimenting.

 

Have a look at WEMOS D1 Mini - they're about the same price, the same form-factor but have Shields (only the DHT11 in this case) 

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Edited September 21, 2017 by ianbren
strike through on (c)

[10der 101]

20 minutes ago, ianbren said:

I like the Code - some suggestions...

(a) - you calculate Dewpoint - but don't return it in the HTML.

 

(b) the calculation is deferred every 15 seconds (in the main loop) - perhaps pull the constant out to the top to make it clear what's happening.

(c) you might want to consider starting up the DHT/reportreading  before calling the server.begin() - as it stands the HTML strings (humidityString etc) are empty and Fibaro may start polling before the first read.

Oh, and I love the icon model.

Oh, and I found the WITTY useful for the LDR, but getting access to the Digital pins is a pain for anything other than experimenting.

 

Have a look at WEMOS D1 Mini - they're about the same price, the same form-factor but have Shields (only the DHT11 in this case) 

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a) yep! you're right. I was thinking later what it's useless

b) yes.

c) arduino does not start loop thread while setup() void not done  + server.handleClient(); last command in loop - all requests from HC2 going to /dev/null

 

Quote

Oh, and I found the WITTY useful for the LDR, but getting access to the Digital pins is a pain for anything other than experimenting.

 

but this sandwich pretty good! (IMHO)

 

Quote

Have a look at WEMOS D1 Mini - they're about the same price, the same form-factor but have Shields (only the DHT11 in this case) 

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yes, I know. 

see also:

WeMos D1 mini DHT11 shield
WeMos D1 mini DHT22 shield
WeMos D1 mini OLED 0.66 shield (

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)
WeMos D1 mini TB6612FN (motor driver) shield
WeMos D1 mini button shield
WeMos D1 mini relay 5v shield
WeMos D1 mini LED ws2812 controller shield

[ianbren 4]

16 minutes ago, 10der said:

arduino does not start loop thread while setup() void

- good point - and the variables are populated before that.  So scrub (c)!!

[10der 101]

as Another ideas...

 

Arduino sketch

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here are results:

 

 

 

so, now ESP poll FIBARO if events occurred

ESP call fibaro scene and pass some parameters.

pay attention: we can use one single scene for many external callers - a simple pass to the scene for example Id or action etc

 

 

 

btw, in the scene we can pass a table as well:

for example

 

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fibaro result:

[DEBUG] 02:14:52: actions
[DEBUG] 02:14:52: table: 0xa133818

 

[ianbren 4]

I've seen this before - it does split the logic between the ESP and the Fibaro - but this approach pushes the FB-specific actions into the Scene.

 

 

[DPKok 1]

On 20-9-2017 at 3:52 AM, ianbren said:

201 is also posted now at

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Shows how a Fibaro HC2 can poll an ESP8266 and receive JSON data back - then post it to a label.

 

This is a work in progress and if there's interest I'll move on to ESPEASY - to monitor temperature.

 

 

 

Hi,

 

First of, thanks for the info. It was realy helpfull thusfar. Perhaps you can help me a littlebit further.

 

I'm building a touchscreen based on a Nextion display and a ESP8266 Nodemcu chip. I want to make a wall controller for my Homecenter 2. I can already send data from mij ESP8266 to HC2 to start a scene or switch a device. And i can send the GET command from my HC2 to the ESP in order to start a void there. (With your code) I was wondering, is there a way that i can send the status or brightness value from my HC2 to a int in the ESP? I'm trying to figure it out for a while now and can't seem to fin a good soulution.

 

Greetings,

 

Damien

 

P.S. Sorry for my English, not my native language.

 

[ianbren 4]

well, the simplest way would be to pass it as a parameter.  If you have the ESP8266 libraries installed, there's an example called "advanced web server".  It shows how you can pass page requests to the ESP and have it break them down.  Look for 

 

 server.on ( "/inline", []() {
  server.send ( 200, "text/plain", "this works as well" );
 } );

 

If you want to pass a parameter something like this for "i" and "s" --- http://someUrl/myPage?i=5&s=20 --- then it get's a little more complicated.

 

 

use a line like 

 

 

 server.on ( "/myPage", handleMyPageHere)

 

then have a function

void handleMyPageHere(){

int myVar1, myVar2;

  if (server.hasArg("i")) myVar1 = (server.arg("i").toInt());

  if (server.hasArg("s")) myVar2 = (server.arg("s").toInt());

// do something interesting with your variables.

}

 

Obviously scope of the variables is important.

 

Maybe the return string is the response that Fibaro is waiting for.

 

Have fun!

[FIBARO 0]

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[insippo 0]

I want use esp8266 for 2 relays for my garden watering. With Raspberry Pi and Domoticz all working. But i want use these relays with Fibaro.  It is possible and how ?

[jayrock 2]

insippo, I had some success using EasyESP and have a scene calling the EasyESP REST API.

 

- Check the EasyESP docs for API, you will have to set up a task for this.

- Here in the forum you find numerous examples how a Fibaro scene makes a call to a REST API.

 

Cheers,

 

jayrock