- If you have a SmartThings/Aeotec hub, @Mariano_Colmenarejo has a very clever edge driver with calendar functions which is popular in the community.
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if you have an android phone, you can use a third party app, Tasker, to tie Google calendar and Google assistant together, but I don’t know the details of that method
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you can use another third party app, zapier, which works something like ifttt, but it gets complicated so I would only recommend using that if you are already using zapier for something else
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SharpTools has some calendar information, but I don’t know if they offer a way of using your existing Google calendar information as the trigger/filter on a rule. Hopefully someone else will know.
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By the way, it might help to know more details of the use case.
One common example is setting location mode to “vacation” whenever there is a Google calendar entry of “start vacation” and back to “home” whenever there is a Google calendar entry of “stop vacation.”
Some people set a color changing nightlight to a specific color, maybe blue, for school holidays, again triggered by a specific entry in the calendar.