What’s needed?

1) light sensor that can detect the change of light levels 30ft away accurately.
2) a way to set the light level to “zero” with the push of a button
3) after pressing the button, if the light levels increase over a certain level, the sensor/module needs to have an output of 12v

 

I proved the theory works with some .99cent light diodes and breadboards from Amazon, when up close. My expertise ends there.

I am looking to pay someone who can build this for me and I’ll pay you, for the device.