Imagine that your mechanical devices are small and sensitive enough to detect a single water molecule hitting them. Imagine that each water molecule hitting one of your mechanical devices would produce a flash from the electricity generated. Imagine you run an experiment in the dark, so that you cannot actually see the water wave. Imagine you used a high-speed camera to film the flashing lights as the wave hits your set of mechanical devices, so that there are only a few flashes per frame.
If you looked at each frame, you would not recognize a pattern. But if you run the film with the appropriate speed, then you would recognize that the flashes follow a wave pattern. The macroscopic water wave hitting your set of detectors is composed of individual molecules interacting with individual mechanical devices.
Have a look at this video: Interference pattern built up photon by photon.
As others have pointed out,your mechanical analogy does not very well for EM waves and photons.
But your reply shows clearly that you did not actually get my point: it is not the quantized exchange of energy that points towards particle-like properties. It is the fact that the interaction occurs in a point in space.
In your posts you have shown that you do not understand classical electromagnetism well enough to speculate outside established physics (you still do not seem to grasp that an EM in vacuum is basically self-sustaining, which is actually nicely consistent with the idea that an excitation of the EM field can "fly off" without a source pumping energy into it). You also do not seem to understand that in modern physics, macroscopic EM waves are pictured as composed of many photons, and that the photons are the excitations of the electromagnetic field.
Now, if you want to continue with this thread, address the other points I made in my posts.