Detecting car presence when Arriving to my garage door?

[aaiyar]

This works really well.

ZigBee Arrival Sensor For Car

Hello Everyone, I make a DIY Arrival Sensor for all of us. This is inspired from using ST Arrival Sensor in our car. The ST sensor has been discontinued. This is one of the reason I have to make my own. In addition, I make them because there are some weakness using the original ST arrival sensor in our cars. I apologized for a long information. I would like to have the first post for all of us to get the latest information about this sensor. The topic may get very large. I want to pr…