build a gate alarm circuit

[BryanX]

tank you very much for this previliedge..currently am working on building a gate alarm circuit and so far I have implemented the circuit twice on a breadboard an couldnot get any response.meanwhile I dont know what to expect from the circuit so am more like confused..kindly help

 

[(*steve*)]

What is the nature of the assignment?

Show us the schematic.

Tell us what the sensor is (I presume there is one).

Tell us what you want it to do.

Show us your construction on the breadboard.

We'll see what we can do.