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That is pretty much what my controller will do, when I get round to porting it onto the ESP32 or ESP8266. Probably more likely to go with the ESP32 for essentially the same reasons you suggest - still about the same price and more powerful! And Bluetooth built in!
Not sure how accurate the built in time keeping is in the ESPs tho - the Arduinos are pretty inaccurate without an RTC, so would be tempted to include an RTC, but automatically set it from an NTP server when the 'net is available.
Tim
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