I currently use sensor.pws_precip_today_in.
So yesterday we had 2.5 inches, today its sunny. I would like to combine a weeks *y days) worth of this sensor to one sensors that shows me the accumulated rainfall over the past 7 days and use that to control the sprinker automateion.
I currently have history turned on and utlize the MySQL for storage.
Any ideas on how to do this.