Any ideas on how to accomplish this?

[sayzer]

Here is the solution for you Bart.

I would not draw this if the deer were not the subject!

Attached is the concept.
Two laser pointers crossing the yard placed with a distance to each other that is small enough to be intercepted at the same time on a vehicle pass AND also big enough not to be intercepted at the same time on a deer pass.

- You may want to add a third laser for height detect.
- You may want to consider the legs of the deer for safer detect.

- A car can be best detected with front, rear and top lasers; all being intercepted at the same time for activating something.

You can come up with the code I believe.



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