Lua script

[Dragon]

I have made a simple lua script to count pellet and show this on a virtuell counter in Domoticz. The problem is that the counter dont shows decimals. Can anyone tell me if it is some more i have to write in the script. Here it is
counter = otherdevices_svalues['Counter']
counter = tonumber(counter)

commandArray = {}
if
devicechanged['Pellets'] == 'On'
then
counter = counter + 0.015
commandArray['UpdateDevice'] = 82 .. '|0|' .. tostring(counter)
end

return commandArray

[blacey]

Try string.format("%.3f", counter)

For example: commandArray['UpdateDevice'] = 82 .. '|0|' .. string.format("%.3f", counter)

[Dragon]

Thanks but that didnt help.

[blacey]

@Dragon I must have misunderstood what you are trying to accomplish. In lua 5.1.5, here is the result for what I thought you were trying to accomplish.

Perhaps you should print(commandArray['UpdateDevice']) after you set it to confirm the value at that point. If the value of commandArray contains the string with decimals, as I suspect it will, then it must be something else or a Domoticoz issue. I also believe that tostring(counter) will include the decimals; the advantage of string.format() is that you can control the format of the resulting string...

[Dragon]

I can try explain more how i made it. Sorry for my bad English, on my pellet boiler i have a switch that sends on to domoticz every turn with is 15 gram pellet. In domoticz is the switch called Pellets. Then i made a viruell counter in domoticz with name Counter. I want the lua script to + 0.015 to every turn the boiler do to Count how mutch pellet it use. It works now but shows without decimals like 2kg, 3kg and so. I can have so but it would be fun to se more exact weight.

[flopp]

What is your Device in DZ?

I guess it is a Dummy but is it a general counter, switch etc?

[flopp]

@Dragon said:

counter = otherdevices_svalues['Counter']

print(counter)

counter = tonumber(counter)

print(counter)

commandArray = {}
if
devicechanged['Pellets'] == 'On'
then
counter = counter + 0.015

print(counter)

commandArray['UpdateDevice'] = 82 .. '|0|' .. tostring(counter)
end

return commandArray
put print after each change you do with counter to see what actually happen with your values, as @blacey wrote

[Affe]

Interesting projects

I'm looking to create a counter that counts the number of times the temperature reaches above 30 degrees.
Intend to use it when I bonfires

Have you learned LUA on the internet?

[Dragon]

@flopp In DZ the counter is incremental but i tried general to.

[Dragon]

@flopp When i put in print(counter) it shows with decimals in the logg but the counter doesnt

[Dragon]

@Affe I can not lua i read on lua pages on internet and experiment

[flopp]

This my script with decimals

commandArray = {}

if devicechanged['Panna_V'] or devicechanged['Huset_V'] then
    local panna_v = otherdevices_svalues["Panna_V"]
    local huset_v = otherdevices_svalues["Huset_V"]
    local hushall_kwh = uservariables['Hushåll_kWh']
    local huset_kwh = uservariables['Huset_kWh']
    local panna_kwh = uservariables['Panna_kWh']
    
    local panna, energy, huset, energy2
    --print(pan)
    --print(hus)
    
    _,_,panna, energy = string.find(panna_v, "(.+);(.+)")
    _,_,huset, energy2 = string.find(huset_v, "(.+);(.+)")
    --print(panna)
    --print(huset)
    --print(energy)
    --print ("energy2="..energy2)
    --print ("huset_kwh="..huset_kwh)
    husetdiff_kwh = energy2 - huset_kwh
    --print ("husetdiff kwh")
    --print (husetdiff_kwh)
    
    --print ("energy="..energy)
    --print ("panna_kwh="..panna_kwh)
    pannadiff_kwh = energy - panna_kwh
    --print ("pannadiff kwh")
    --print (pannadiff_kwh)
    
    hushal_kwh = husetdiff_kwh - pannadiff_kwh
    hushall_kwh = hushall_kwh + hushal_kwh
    --print ("hushåll_kwh")
    --print (hushall_kwh)
    panna = tonumber(panna)
    huset = tonumber(huset)
    hush = huset - panna
    ener = energy2 - energy
    
    --print(hush)
    --print(ener)
    if hush > 0 then
    
        --print(el)
        commandArray['Variable:Hushåll_kWh']= tostring(hushall_kwh)
        commandArray['Variable:Huset_kWh']= tostring(energy2)
        commandArray['Variable:Panna_kWh']= tostring(energy)
            
        abc = tostring(hush)
        def = tostring(hushall_kwh)
        commandArray['UpdateDevice'] = '272|0|'..abc..';'..def..''
    else
    end
    
end
return commandArray

I am using Dummy, Electric(Instant&Counter) version 3.5721 of DZ

Panna_V(heating system) and Huset_V(whole house) is electric usage meters that report every 5 minute. I use my Dummy to show my electric consumption without(minus) my heating system