I am on verge of purchasing a Gen3 unit and need to execute the same routine requested above by @garyrask; When there is no flow or low flow from our 2hp pump (pulling from the river behind our house), I need Rachio to shutdown the system to avoid damaging the pump. In this routine incorporated into latest Gen3 firmware or do I need to generate an IFTTT statement/applet? This assumes the flow sensor data is available to the user? I intend to purchase/wire a CST 1.5" flow sensor from your suggested list.
I have read this thread that started with a similar request by @cahawkins51 :
I am keeping this other hardware solution in mind as a backup plan but do not want to purchase the Munro SmartBox if at all possible because the data necessary to close the control already exists with the flow sensor:
