Use Home Assistant to Send a Notification at a Specific Interval When the Door is Left Open

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This blog post builds on my last post about the Wemos D1 Mini Garage Door Controller.

Sending a notification via Home Assistant is a simple process, and it is mostly well documented. However, I had trouble finding a solution that repeatedly sends a notification about a device state until that state changes. In this case, I wanted something to notify me when my garage door is open for a while, and then continue sending me notifications every 30 minutes until it’s closed.