Use P1 data to control to 0 consumption with PWM controller

[reddo]

Hi all,

I have domoticz running with quite a few sensor, switches and blockly sripts but am in need of some scripting blockly cannot di and I am not able to do lua or other programming sadly.

I would like to have a script that reads the P1 data and, with a PID controller, tries to keep the consumtion from the net at 0

so, setpoint for the PI controller is 0, process value is the net consumptrion and the output varies the PWM between 0 an 100%
this PWM needs to be send to an external esp8266 running espeasy or tasmota

i use this esp pwm output then to modulate a heater when there is enough solar power. Heater wil start using a wifi switch and once switched on can be controlled with the PWM signal that controls a kemo M240

would anyone be able to make such a script ?

Thanks !

[HvdW]

This one can get you started.

Code: Select all

-- Teruglevering

-- assumptions: 
-- the setpoint is set by a dummy device (not a selector type) 
 -- http://192.168.2.110:8383/json.htm?type=devices&rid=15
 
local LED_gebruik = 'LED gebruik' -- switch device D7 GPIO 13
local LED_opbrengst = 'LED opbrengst' -- switch device D6 GPIO 12
local P1 = 'Power' -- P1 reading
--local LOGGING = true
return {
    active = true,
    on = 
    {
        timer = 
        {
            'every minute', -- between 20 minutes after sunrise and 20 minutes before sunset'
        },
    },
    logging = {
        --LOG_INFO, domoticz.LOG_MODULE_EXEC_INFO, domoticz.LOG_DEBUG or domoticz.LOG_ERROR
        level = domoticz.LOG_ERROR, -- domoticz.LOG_DEBUG for debug, to domoticz.LOG_ERROR when all OK
        marker = "Teruglevering"
    },

-- between 30 minutes after sunrise and 20 minutes before sunset'

    --LOG level: This is the log level you want for this script. Can be domoticz.LOG_INFO, domoticz.LOG_MODULE_EXEC_INFO, domoticz.LOG_DEBUG or domoticz.LOG_ERROR
    --marker: A string that is prefixed before each log message. That way you can easily create a filter in the Domoticz log to see just these messages.



    execute = function(dz)
        -- domoticz.utils.dumpTable(item.json)   -- dumpTable laat alle waarden zien, mooi voor debugging
        -- collect all input data
        local power_usage = dz.devices(P1).usage -- usage kan plus en min zijn
        local power_delivery = dz.devices(P1).usageDelivered        


        -- info only on log level = LOG_DEBUG
        dz.log('Gebruik         : ' .. power_usage, dz.LOG_DEBUG)
        dz.log('Teruglevering   : ' .. power_delivery, dz.LOG_DEBUG)


        if (power_delivery >= 2000) then
          -- groene led aan  
          dz.devices(LED_opbrengst).switchOn() 
          dz.devices(LED_gebruik).switchOff()
        elseif (power_delivery < 2000) and power_delivery > 10 then
          -- groene led en rode led aan  
          dz.devices(LED_opbrengst).switchOn() 
          dz.devices(LED_gebruik).switchOn()  --
        elseif (power_delivery <= 10) then
          -- rode led aan  
          dz.devices(LED_gebruik).switchOn() --
          dz.devices(LED_opbrengst).switchOff()
        end

    end
} 

-- einde Teruglevering