Run event based on device power usage in watts

[ben53252642]

Sharing my Lua script to do this in Domoticz, edit as needed for your setup.

In the below script if the washing machines power usage exceeds 4 watts an event will run once, if it falls below 4 watts another event will run once.

Code: Select all

commandArray = {}

 -- Change Watt Device value to number and remove the word Watt
wattdevice = otherdevices_svalues['Washing Machine / Dryer Watts']
function stripchars(str, chrs)
   local s = str:gsub("["..chrs.."]", '')
   return s end
wattvalue = stripchars( wattdevice, " Watt" )

if (uservariables["WashingMachineState"] == 'notinuse' and tonumber(wattvalue) >= 4 ) then
commandArray['Variable:WashingMachineState'] = 'inuse'
os.execute ('sh /domoticz/speak.sh "speaker2 I am ready to wash your clothes."')
end

if (uservariables["WashingMachineState"] == 'inuse' and tonumber(wattvalue) <= 4 ) then
commandArray['Variable:WashingMachineState'] = 'notinuse'
os.execute ('sh /domoticz/speak.sh "speaker2 The washing is finished."')
end

return commandArray

It uses a user variable which you will need to manually create prior to running the script, see below screenshot.

Screen Shot 2016-07-02 at 1.27.55 PM.png (148.55 KiB) Viewed 1844 times

[papoo]

thanks

[papoo]

can you post your speak.sh?

[ben53252642]

Sure, I use Tasker and AutoRemote on Android to speak messages. Simply install AutoRemote on Android and go to the URL it tells you to get the API key for your device.

Then go into Tasker

1) Add an event, choose plugins, auto remote, and set the message filter to: speaker

2) Add a task to the event, choose alert, say then enter %arcomm as the text to say.

Exit tasker and save, then re-open it (you can set it to automatically start at device boot, it's quite reliable.

To call a specific device speaker from linux bash the command would be:

./speak.sh "speaker2 hello world"

I've also left some code I am not using at the moment but may be of use at the bottom of this script which can enable audio output from the Domoticz device itself using a range of text to speech engines (if you have speakers connected).

Code: Select all

#!/bin/sh

# Send to all Speaker Clients
case $1 in allspeakers*)
cd /domoticz
# Google GCM Speakers
./speak.sh "speaker2 $message"
./speak.sh "speaker3 $message"
esac

# Main Bathroom Tablet Speaker Client
case $1 in speaker2*)
part1=$(echo speaker=:="$1" | sed -e 's/\<speaker2\>//g')
part2=$(echo "$part1" | sed 's/ /%20/g')
curl "https://autoremotejoaomgcd.appspot.com/sendmessage?key=ENTERAPIKEYHERE&message="$part2""
esac

# Kitchen Tablet Speaker Client
case $1 in speaker3*)
part1=$(echo speaker=:="$1" | sed -e 's/\<speaker3\>//g')
part2=$(echo "$part1" | sed 's/ /%20/g')
curl "https://autoremotejoaomgcd.appspot.com/sendmessage?key=ENTERAPIKEYHERE&message="$part2""
esac

# ------------------------------------------------

#flite -voice kal16 -t "$1"
#pico2wave -w=temp.wav "$1"
#swift -n David -p audio/sampling-rate=16000 "$1" -o /wave_files/localspeaker.wav
#aplay /wave_files/localspeaker.wav
##pico2wave --lang=en-GB -w /wave_files/localspeaker.wav "$message"

[papoo]

great
thanks

[ben53252642]

If your using Z-Wave don't forget to increase the rate that the device sends its status to Domoticz

I use 2 seconds for most devices, they send the power in watts to Domoticz every 2 seconds.

Screen Shot 2016-07-02 at 8.02.36 PM.png (87.98 KiB) Viewed 1796 times

This time allows me to do things such as (I recently purchased a document shredder), when I shred a document Z-Wave detects the power increase in watts from the Shredder and I get a verbal announcement "Shredding complete.".

If 2 seconds is not quick enough you may use 1 second in some cases although you want to keep this to a minimum due to the increase in traffic over the Z-Wave network.

I've found it's possible to turn a lot of "dumb" devices into smart devices simply by looking at their power consumption in near realtime.

Some devices I've automated using power consumption include:

• Washing Machine / Dryer
  Dishwasher
  Shredder