Regulating temperature

[ulfh2018]

I have started on a prpject helping my twin brother to replace his old heat controling system, which is VERY expensive to replace using the vendors components. I plan to use DS18b20 as sensors, connected to ESP8266 running ESPEasy. I have already tested with DTH22, and it works fine, but the DTH22 is draining too much power, so I cannot use batteries (though I use Deep Sleep mode on in ESPEasy). I suppose there will not be any problems changing to DS18b20, but I would like to implement something like what is shown in https://www.youtube.com/watch?v=1ef6tRinOQ4

I know the ESPEasy part, but I'm not very used to Domoticz, since I have been using Node-Red most of the time. Now I find the interface on Domoticz better, so I want to try, though it would not be difficult for me to implent in Node-Red.

I would like to implement the symbol he is using for regulating temperatures up and down, but I have no clue to how this is done. Can someone please help me?

Best regards

Ulf

image.jpg (10.6 KiB) Viewed 5666 times

[freijn]

Ulf

In the ESP you define the "idx" which is the number of the sensor in your domoticz.

"behind" the symbol you show there is also an "idx". You do need to write a script taking the change of the temp set and compare to the current
room temp.

But.........

Have a look in the forum there is a topic with a complete script where you only have to change the "idx" settings and get it going!!

Cheers,

Frank

[ulfh2018]

Thank you so much for answering!

I know about the idx-stuff etc, Frank, but dont understand how to set up the Utility Sensor and where to find the icon that is regulating the temperature. If you can give me a hint where to find the example among the myriades of helpful information, I would be really happy. Have been playing around for a some time, but have not found what you are talking about so far

Cheers,

Ulf

[waaren]

I dont understand how to set up the Utility Sensor and where to find the icon that is regulating the temperature. If you can give me a hint where to find the example among the myriades of helpful information

First you need add virtual hardware. You do that on the hardware tab by adding a Type "Dummy (Does nothing, use for virtual switches only)"
After that on the same tab you click the "create Virtual Sensors" button just below the newly created virtual hardware.

Create a virtual sensor named "ESPeasyThermostat" type Thermostat setpoint
Create a virtual sensor named "ESPeasyTemperature" type Temperature

You will find the setpoint Icon on the utility tab and the temperature on the temperature tab.

Below an example dzVents script that will react on changes to the setPoint and Temperature and send MQTT commands to a topic using mosquitto.
Please feel free to ask clarification where / when needed.

Code: Select all

-- mqqt 
return {
    
    on      =   {   devices  =   
                                { 
                                    "ESPeasyThermostat",                   -- name of your virtual setPoint device
                                    "ESPeasyTemperature",
                                }
                },

    logging =   {
                    level       = domoticz.LOG_DEBUG,
                    marker      =    "MQTT setpoint"
                },

    data    =  {    MQTTCommand = { initial = { "notSet" }
                                  } 
               },
    
    execute = function(dz, item)
        
        local MQTTTopic    = "espeasy/setPoint"
        local temperature  =  dz.devices("ESPeasyTemperature").temperature
        local setpoint     =  dz.devices("ESPeasyThermostat").setPoint
        
        local function logWrite(str,level)
            dz.log(tostring(str),level or dz.LOG_DEBUG)
        end
        
        local function osExecute(cmd)
            logWrite("Executing command: " .. cmd)
            local fileHandle     = assert(io.popen(cmd, 'r'))
            assert(fileHandle:read('*a'))
            fileHandle:close()
        end
        
        local action = "close"
        if temperature <= setpoint then action = "open" end
        if dz.data.MQTTCommand ~= action then 
            local mqttCommand  = "mosquitto_pub -t " .. MQTTTopic .. " -m '" .. action .. "'"
            osExecute(mqttCommand)
            logWrite("Sent " .. action .. " to MQTT topic " .. MQTTTopic)
            logWrite("Temperature: " .. temperature .. ", setpoint:  " .. setpoint)
            dz.data.MQTTCommand = action
        else
            logWrite("Temperature: " .. temperature .. ", setpoint:  ".. setpoint)        
            logWrite("No action needed; " .. action .. " already send to MQTT topic " .. MQTTTopic)
        end
        
    end
}

[ulfh2018]

Hello Waaren

I was sure I had replied, but for some reason it does not show, so I have to do it again.
Thanks a lot for your help! It made my day. It's so easy when you know where to look, and I have been playing with Domoticz for just a few weeks. I get the fundamental stuff, and I have been looking at C# and a couple of other languages, so I'm able to get the syntax without struggelig too hard.

I'll keep in touch - especially if there is something I don't understand, but I think the road should not be so hard to find now.

All the best from

Ulf

[ulfh2018]

Hello Waaren

Well, was not as easy as I thought.
Have done the following:
1. Installed local MQTT - no password (testing only)
2. Created the two virtual sensors, using the same name as you have
3. Copied the code
4. Activated the event

When I try to change the valu in the Setpoint, this is not reflected to temperature.
Logfile shows the following:

2019-03-12 15:20:37.882 Status: dzVents: Info: Handling events for: "ESPeasyThermostat", value: "2.00"
2019-03-12 15:20:37.883 Status: dzVents: Info: MQTT setpoint: ------ Start internal script: Test: Device: "ESPeasyThermostat (ESP8266)", Index: 17
2019-03-12 15:20:37.884 Status: dzVents: Debug: MQTT setpoint: Processing device-adapter for ESPeasyTemperature: Temperature device adapter
2019-03-12 15:20:37.884 Status: dzVents: Debug: MQTT setpoint: Temperature: 0, setpoint: 2
2019-03-12 15:20:37.884 Status: dzVents: Debug: MQTT setpoint: No action needed; open already send to MQTT topic espeasy/setPoint
2019-03-12 15:20:37.884 Status: dzVents: Info: MQTT setpoint: ------ Finished Test

What am I missing?

[waaren]

Hello Waaren

Well, was not as easy as I thought.
Have done the following:
1. Installed local MQTT - no password (testing only)
2. Created the two virtual sensors, using the same name as you have
3. Copied the code
4. Activated the event

When I try to change the valu in the Setpoint, this is not reflected to temperature.
Logfile shows the following:

2019-03-12 15:20:37.882 Status: dzVents: Info: Handling events for: "ESPeasyThermostat", value: "2.00"
2019-03-12 15:20:37.883 Status: dzVents: Info: MQTT setpoint: ------ Start internal script: Test: Device: "ESPeasyThermostat (ESP8266)", Index: 17
2019-03-12 15:20:37.884 Status: dzVents: Debug: MQTT setpoint: Processing device-adapter for ESPeasyTemperature: Temperature device adapter
2019-03-12 15:20:37.884 Status: dzVents: Debug: MQTT setpoint: Temperature: 0, setpoint: 2
2019-03-12 15:20:37.884 Status: dzVents: Debug: MQTT setpoint: No action needed; open already send to MQTT topic espeasy/setPoint
2019-03-12 15:20:37.884 Status: dzVents: Info: MQTT setpoint: ------ Finished Test

What am I missing?

the setPoint will send the command once and that should trigger the espEasy to open the radiator valve.
The temperature sensor connected to the espEasy should send the measured temperature to domoticz using the payload

Code: Select all

{  "idx" : idx of your virtual temperature sensor in domoticz,  "nvalue" : 0,  "svalue" : "temp in celsius" } 

to topic domoticz/in
You will find more relevant info here

[kimot]

@ulfh2018
The mentioned video is my solution for floor el. heating.

Domoticz device is Dummy Thermostat Setpoint, but I changed its icon in "/domoticz/www/images".
It not regulate temperature ( this is done by ESPeasy rules ), only defines setpoint and by script sends it to ESPeasy.

Its value is send to ESPeasy when changed and then every minute.

Complete ESPeasy rules end DzVents script example for sending Setpoint value are in discussion below video.

And this rules works only with _dev13 and v2.0 vesrsions of ESPeasy, not in "mega" versions.

And for ESPeasy with DS18B20.
I am running one outdoor temperature sensor with DS18B20 and powerbank 2500mAh.
Send temperature every 5 min and then deepsleep.
Working time for one battery charge is about 7 days. ( Nodemcu board )

[ulfh2018]

Then I get the picture. I'm running the Mega version! I'll try with another version.

[kimot]

"mega" versions have problem to work with my rules from V2.0 and _dev versions.
My actual working version is v2.0-20180322

I write about it on ESPeasy forum here:

https://www.letscontrolit.com/forum/vie ... f=4&t=6536

DzVents script which runs every minute to send values to my nodes:

Code: Select all

-- Check the wiki at
-- http://www.domoticz.com/wiki/%27dzVents%27:_next_generation_LUA_scripting
return {

	-- 'active' controls if this entire script is considered or not
	active = true, -- set to false to disable this script

	-- trigger
	-- can be a combination:
	on = {
		timer = {
			-- timer triggers.. if one matches with the current time then the script is executed
			'every minute',
		}
	},

	-- actual event code
	-- in case of a timer event or security event, device == nil
	execute = function(domoticz)
		--[[

		The domoticz object holds all information about your Domoticz system. E.g.:

		local myDevice = domoticz.devices('myDevice')
		local myVariable = domoticz.variables('myUserVariable')
		local myGroup = domoticz.groups('myGroup')
		local myScene = domoticz.sceneds('myScene')

		The device object is the device that was triggered due to the device in the 'on' section above.
		]] --
		-- example
		
		-- HDO
		    local HDO_PV = domoticz.devices('HDO-PV')
		    -- Kacka
		    local urlHDO = 'http://192.168.1.102/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Filip
		    local urlHDO = 'http://192.168.1.105/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    --Kuchyne
		    local urlHDO = 'http://192.168.1.103/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    --Obyvak
		    local urlHDO = 'http://192.168.1.104/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Koupelna
		    local urlHDO = 'http://192.168.1.107/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- WC
		    local urlHDO = 'http://192.168.1.109/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Koupelna_WC
		    local urlHDO = 'http://192.168.1.108/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		     -- Loznice
		    local urlHDO = 'http://192.168.1.110/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Hala
		    local urlHDO = 'http://192.168.1.106/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Chodba
		    local urlHDO = 'http://192.168.1.111/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Technicka
		    local urlHDO = 'http://192.168.1.112/control?cmd=event,HDO='..(HDO_PV.nValue)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		      
		--Outdoor      
		      
	       local outdoor = domoticz.devices('Outdoor')
	       -- Kacka
		    local urlHDO = 'http://192.168.1.102/control?cmd=event,Outdoor='..(outdoor.temperature)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Filip
		    local urlHDO = 'http://192.168.1.105/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    --Kuchyne
		    local urlHDO = 'http://192.168.1.103/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Koupelna
		    local urlHDO = 'http://192.168.1.107/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
	        -- WC
		    local urlHDO = 'http://192.168.1.109/control?cmd=event,Outdoor='..(outdoor.temperature)..'' 
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
	        -- Koupelna_WC
		    local urlHDO = 'http://192.168.1.108/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		     -- Loznice
		    local urlHDO = 'http://192.168.1.110/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Hala
		    local urlHDO = 'http://192.168.1.106/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Chodba
		    local urlHDO = 'http://192.168.1.111/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
		    -- Technicka
		    local urlHDO = 'http://192.168.1.112/control?cmd=event,Outdoor='..(outdoor.temperature)..''
		    print(urlHDO)
		    domoticz.openURL(urlHDO)
	     
	     --Setpoint
	        -- Kacka
	        local setpoint = domoticz.devices('Kacka_Setpoint')
            local url= 'http://192.168.1.102/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Filip
	        local setpoint = domoticz.devices('Filip_Setpoint')
            local url= 'http://192.168.1.105/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Kuchyne    
            local setpoint = domoticz.devices('Kuchyne_Setpoint')
            local url= 'http://192.168.1.103/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Obyvak nastaveni stejne jako pro kuchyn, nema vlastni ovladani    
            local setpoint = domoticz.devices('Kuchyne_Setpoint')
            local url= 'http://192.168.1.104/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Koupelna
	        local setpoint = domoticz.devices('Koupelna_Setpoint')
            local url= 'http://192.168.1.107/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- WC
	        local setpoint = domoticz.devices('WC_Setpoint')
            local url= 'http://192.168.1.109/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Koupelna_WC
	        local setpoint = domoticz.devices('Koupelna_WC_Setpoint')
            local url= 'http://192.168.1.108/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Loznice
	        local setpoint = domoticz.devices('Loznice_Setpoint')
            local url= 'http://192.168.1.110/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Hala
	        local setpoint = domoticz.devices('Hala_Setpoint')
            local url= 'http://192.168.1.106/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Chodba
	        local setpoint = domoticz.devices('Chodba_Setpoint')
            local url= 'http://192.168.1.111/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
            -- Technicka
	        local setpoint = domoticz.devices('Technicka_Setpoint')
            local url= 'http://192.168.1.112/control?cmd=event,HeatSetpoint='..(setpoint.state)..''
            print(url)
            domoticz.openURL(url)
	        
	     -- mode
	        
	        -- Kacka
	        local mode = domoticz.devices('Kacka_Control')
            local url2= 'http://192.168.1.102/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
             -- Filip
	        local mode = domoticz.devices('Filip_Control')
            local url2= 'http://192.168.1.105/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Kuchyne    
            local mode = domoticz.devices('Kuchyne_Obyvak_Control')
            local url2= 'http://192.168.1.103/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Obyvak nastaveni stejne jako pro kuchyn, nema vlastni ovladani    
            local mode = domoticz.devices('Kuchyne_Obyvak_Control')
            local url2= 'http://192.168.1.104/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Koupelna
	        local mode = domoticz.devices('Koupelna_Control')
            local url2= 'http://192.168.1.107/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- WC
	        local mode = domoticz.devices('WC_Control')
            local url2= 'http://192.168.1.109/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Koupelna_WC
	        local mode = domoticz.devices('Koupelna_WC_Control')
            local url2= 'http://192.168.1.108/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Loznice
	        local mode = domoticz.devices('Loznice_Control')
            local url2= 'http://192.168.1.110/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Hala
	        local mode = domoticz.devices('Hala_Control')
            local url2= 'http://192.168.1.106/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Chodba
	        local mode = domoticz.devices('Chodba_Control')
            local url2= 'http://192.168.1.111/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
            -- Technicka
	        local mode = domoticz.devices('Technicka_Control')
            local url2= 'http://192.168.1.112/control?cmd=event,modeSet='..(mode.level)..''
            print(url2)
            domoticz.openURL(url2)
                
        -- do something
     
	end
}

[ulfh2018]

Thanks a lot my friend. Just flashed, and seems to work. I still have to do some changes, but I’m starting to build the rules one by one.

[HvdW]

What about the ready to use thermostat plugin for Domoticz?
It installs within minutes.

[URL]https://www.domoticz.com/wiki/Plugins/S ... ostat.html [URL]

[kimot]

It is different philosophy.

ESPeasy works like stand alone thermostat, Domoticz only set parameters and receives data for statistics, energy consumption etc.
When Domoticz crashes or network connection to sensors is lost - they still regulate temperature to last set temperature.

What happens with this Domoticz plugin thermostat if Domoticz crashes in Heatswitch ON state.
I am worried, then heating stays in ON state forever.
With el. floor heating it can be fatal...