Scene number?

[parkerc]

Hi all

Here’s another snippet of code I like to use, to see what’s going on.
If anyone has any variations on this, I’d love to see it.

local variables = {"Watts"}
local NRG_SER = "urn:micasaverde-com:serviceId:EnergyMetering1"
local total = 0

for lul_device in pairs(luup.devices) do
	local readings = {}  -- create empty array called readings
	for _, variable in ipairs(variables) do -- using the id and value in variables table above
		local value = luup.variable_get(NRG_SER, variable, lul_device)
		local name = luup.attr_get ('name', lul_device)
		table.insert( readings, { variable, tonumber(value), name}) -- populate readings table
	end
	for _, reading in ipairs(readings) do
		local Variable = reading[1]
		local Value = reading[2] or 0
		local Name = reading[3] or "Unknown"
		total = total + Value
			if Value ~= 0 then 
			print(Name, Variable.. " - ".. Value)
			end
	end
end



print("Total watts = " ..total)

[akbooer]

From the very early days, Vera (and openLuup) have had the HTTP request:

VeraIP:3480/data_request?id=live_energy_usage

Giving an output like:

94	Bedroom Ceiling	Room 101		3	44
95	Ceiling	        Room 101		3	44
45	Chandelier	Room 101		3	0
51	Dining Table	Kitchen / Dining	3	50
48	Kitchen		Kitchen / Dining	3	80
13	Near Beam	Room 101		3	0
131	Power Meter				21	2510
208	PV Generation				21	167

where the columns are:

Device #    Name              Room         Category    Watts

see: http://wiki.micasaverde.com/index.php/Luup_Requests#live_energy_usage

[parkerc]

Agreed, sadly I only found out about it after I’d create my version but it was still a good learning curve, adds a total to it, and allows me to present it in the format that works for me at the time. I wonder how many other hidden bits like this are out there..