So, like many others here, will be pulling my MS into and out of a single-car garage opening (the wife gets the double-car opening). Since our driveway is configured such that you have to make a 90-degree right-hand turn to get into the garage from the street, I'm worried about clipping the MS's rear passenger-side fender on the column that separates the garage doors as I pull in.
So, I was thinking that some kind of photoelectric beam could be established a couple inches from the corner that I want to avoid, hooked up to an audible alarm in the garage if the beam is broken. That would give me warning that I'm getting too close.
I figure one of these - http://www.seco-larm.com/E960Sb.htm - could be set up with the sensor above the garage door and the reflector (removed from housing so it's flat) attached to the driveway. Wire it up to permanent power and a small piezo speaker located right inside the garage door.
Thoughts on this? Any suggestions on improving the setup? Or, if there's already a product that does this, do let me know...reinventing the wheel can be extremely tiring. ;-)