Thank you @aaiyar for sharing your thoughts and idea for dew point AC system control. Also thanks to @Guffman and @JohnRob for the groovy code I used as a starting point for my dew point app with independent room control.
To my surprise the house is currently comfortable at T: 79F, RH 50%, TD: 58.6F
Just wondering if adding some additional Humidly sensors would make this more accurate?
My devices
5 Fujitsu mini splits
5 virtual thermostats with temperature set by average temperature app
One whole house virtual thermostat set by average temperature app (setting mode to dewpt triggers the dew point app)
Ecobee thermostat mainly used for humidity, average temperature (and winter heating)
The Dew Point app adjusts the 5 virtual thermostats, triggering
My personal mini-split app sending device control requests to the
Deprecated Broadlink Device app controlling
5 Broadlink IR devices sending codes to the mini-splits
My AC cool settings 7:30Am 77.5; 11:30PM 80 except master BR 76.5, Away 85
Dew Point settings: Disarm/Home On:59 Off 58.9; Night On 58 Off 57.9: Away On 64 Off 63.8
I'm still tweaking all of this so things may change.
App Source
https://raw.githubusercontent.com/arnbme/hubitat/master/dewPoint.groovy
