Hi BigSharpie,
Yes this can work, but I think you’ll need to write your own script to trigger the zone when the motion sensor is activated. In principle it’s no different than what gt244 wanted to do in this thread https://opensprinkler.com/forums/topic/starting-os-from-data-from-thingspeak/ Once you’re able to detect the motion sensor being triggered then you just make an http get request to turn on the OpenSprinkler program that you want to run.
Mike