On Mon, 31 Dec 2018 02:26:37 -0800, edijsedija wrote:

> Thanks for reply guys.
>
> I wanted to make this project more for 'fun project' rather than fight
> for space.
>
> I will look further for what sensor exactly I would need.
>
> Regards

The biggest problem I see is you obviously cannot mount any sensors
outside the boundary's of your own property.
a simple distance sensor may be enough if you can get the right range,
but you would need to filter temporary obstructions such as pedestrians
walking in front etc.

if you can use a camera then security cam software cam make areas of
interest that alert when there is a change. again there is a plausibility
of false +ve's due to pedestrians etc but a a fun project that may not be
too significant


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