Building a device with CoRe question

[tgauchat (ActionTiles.com co-founder Terry @ActionTiles; GitHub: @cosmicpuppy)]

A quick 3 minute search doesn’t yield a conclusive answer, but perhaps a good starting point(s):

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This one involves NodeMCU ESP8266, which therefore likely uses a URL / REST-API

Announcing the "ST_Anything" Arduino/ThingShield Project

I have that. I’m trying to get both the temperature and the switch to show on the Things view. I have a virtual thermostat smartapp that uses 2 separate devices. A NodeMCU ESP8266 to sense the temp and then a second ‘off the shelf’ outlet control to activate a fan. I’m trying to use the relay and temp on a single NodeMCU ESP8266 with the virtual thermostat smartapp and to do that (unless I nave something wrong) I need to have both the temp and switch show on the Things view… [image]

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This one is a skeleton, but only turns on a Switch … so, you would either change the switch triggering code to call the URL endpoint, or use a Virtual Switch to http call SmartApp (there are a few of those!)

james-powis/SmartThingsPublic/blob/improve-virtual-thermostat/smartapps/smartthings/virtual-thermostat.src/virtual-thermostat.groovy

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Another DTH skeleton… not sure if better or worse than the previous:

anderssv/smartthings-code/blob/master/devicetypes/smartthings-f12-no/heating-control-thermostat.src/heating-control-thermostat.groovy

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###My Recommendation?
Unless you are super tight on time and don’t want to make a “learning exercise” of this, then a Thermostat is not super difficult DTH to build from the right template.

1. I’d recommend building a simple Virtual Switch DTH (with synchronizing SmartApp) first, as that basic practice is needed to understand the IDE, syntax, debugging.

2. Make your Virtual Switch call a URL / REST-API for on() and off() commands. i.e., Study the simple http() commands, not the entire chapter on Web Services / Cloud Device Types: http://docs.smartthings.com/en/latest/ref-docs/device-handler-ref.html#httpget

3. Then port your knowledge from 1 & 2 to the Thermostat template.