Luup-Daily-Energy-Cost-Monitor

Scope

This is a Luup plugin to record your daily KwH usage and it's associated cost

Luup (Lua-UPnP) is a software engine which incorporates Lua, a popular scripting language, and UPnP, the industry standard way to control devices. Luup is the basis of a number of home automation controllers e.g. Micasaverde Vera, Vera Home Control, OpenLuup.

Compatibility

This plug-in has been tested on the Ezlo Vera Home Control system.

Features

It supports the following functions:

Creation a device in the UI that show how much your electricity usage is costing you today
Updates variables whenever your KwH usage changes
Keeps a historical log in http://IP_address/DailyUsage.txt

Still to be added..

Leverage the log to show your trend of usage in the UI
Merging with the other Monthly and Weekly Energy Cost Monitor version
other fixes/updates

Imstallation / Usage

This installation assumes you are running the latest version of Vera software.

Upload the image .pngs file to the appropriate storage location on your controller. For Vera that's /www/cmh/skins/default/icons
Upload the .xml and .json file in the repository to the appropriate storage location on your controller. For Vera that's via Apps/Develop Apps/Luup files/
Create the decice instance via the appropriate route. For Vera that's Apps/Develop Apps/Create Device and enter "D_ECMDaily1.xml" into the Upnp Device Filename box.
Reload luup to establish the device, your first load should create an error, as certain key attributes/variables will be missing..
To set it up correct;ly, access the device and update the cost per KwH varaible (e.g. put 0.264 if 26.4p per KwH) , charge per day variable (e.g. put 0.22 if 22p per day) and the Energy Meter variable, which can either be the full http URL of a remote device that can return a KwH value (e.g http://192.168.1.234:3480/data_request?id=variableget&DeviceNum=431&serviceId=urn:micasaverde-com:serviceId:EnergyMetering1&Variable=KWH) or the device ID of a locally registered energy meter on your controller e.g 123 - Note - the latter configuration has not been tested yet..
Reload luup again (just to be sure) and check the plugin status variable for your success or failure - if all is ok, you should be good to go :-)

Due to some challanges getting the luup.timer to work, i've not been able to sucessfully set up an period updates and archiving, so you will need to create a couple of scenes (i) to set the frequency of KwH checks/updates during the day and (ii) to reset and log your daily usage report at the end of each day.

Enter the start a new day luup code in your function - (change 1139 to your DeviceID)

ECMdaily = require("L_ECMDaily1") 
ECMdaily.startNewDay(1139)

To carry out a KwH usage update, here's the luup code for that (remember to change 1139 to your DeviceID)

ECMdaily = require("L_ECMDaily1") 
ECMdaily.updateDaySoFar(1139)

Limitations

While it has been tested, it has not been tested very much and may not support other related devices or those running different firmware.

Buy me a coffee

If you choose to use/customise or just like this plug-in, feel free to say thanks with a coffee or two.. (God knows I drank enough working on this :-))

Screenshots

Once installed, you should see the device listed with your energy cost so far today

nodecentral / Luup-Daily-Energy-Cost-Monitor