Quote:
Originally Posted by Gdeaver
2 30 cm sharp Ir sensors could do it .
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the problem I see with IR sensors is that you can't attach them to the trailer, unless you though of something I completely missed.
The thing that came to my mind was actually a photocell stuck in the trailer hitch and the angle determines how much light it gets and is based off of that. unless there is a rule saying you can't mount things inside the trailer hitch, I didn't see anything against it.