My truck is too long.  The Ford website says 20’3″.  The space between the front and rear garage doors is 21′ even.  That doesn’t leave a lot of margin for error when driving in.

Enter Rat-ratgdo. This is a board that can link with Liftmaster/Chamberlain Security 2.0 garage door openers.  It can read the state of the door, sensors, and control the door.  With ESPHome firmware, it links easily to HomeAssistant.

I moved the obstruction sensor for the rear door up to the height of my bumper.  When the bumper clears, the rat-ratgdo obstruction sensor switches from “Problem” to “OK”.

This allows me to create an automation:

When I drive in the back door, a light in the ceiling turns on as soon as I block the obstruction sensors and turns off again when the sensors are clear.  If the light doesn’t turn on when I drive in, then I know that HomeAssistant isn’t working so then I just have to look in my rear view mirror and watch the blinking LED of the obstruction sensors which is slightly more error prone.