I finally got around to utilizing my own driver to control my sprinklers.
I found this to perform the on\off scheduling.
and I've added some capabilities to the upcoming version of Tile Builder Grid to be able to present sprinkler data on the dashboard without having a smart sprinkler system.
Should be able to save some money on water this summer and the whole thing only cost me $50 for the 8 port Tasmota relay and an enclosure.