platform: PiZero W also running MQTT
SonOff S20 switch running ESPeasy mega-20181025
NR: v0.19.4
Node.js: v8.12.0
dashboard: v2.10.1
Extra node(s):
- node-red-dashboard
- node-red-contrib-mytimeout
- node-red-contrib-alexa-local (optional)
Goal: Shut off a coffee pot 20 minutes after it is turned on and allow it to be turned on/off remotely or by voice (Alexa)
The story: I make coffee for myself and sometimes (ok, enough times to make me come up with this solution) I forget to shut off the pot after pouring the last (or most of the last) of the coffee. When I come back several hours later, the bottom of the pot (glass pot) has coffee baked on to it and I have to scrub it off.
So I got a SonOff S20, flashed it with ESPeasy and configured it to use MQTT, defined the device as a switch, and added a rule (cnfiguration attached).
In Node-RED, I put in a dashboard button (using fa-coffee) colored green when on and red when off and a donut graph to show the state - green on, grey off and I added a count down timer:
Every thing works great, if I setup the coffee the night before, I can wake up, grab my phone and link to the dashboard, click on the coffee cup and by the time I get downstairs, my coffee is ready. And if I forget to shut off the pot, the countdown timer will shut it off for me.
I even added a small extra flow so you can have Alexa turn it on or off with voice commands!
Here is the flow:
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Here are images of SonOff configuration:
NOTE: for device 1 and 2 bottom of the page was cutoff - the name filed is 'switch' for both
NOTE: in order to see the rules menu, you must go to Tools->Advanced and check off the 'Rules' box
Any questions feel free to ask.
Paul
