Pictures and explanations:
52: Picture showing how tread and sensor are distanced apart.
54: Entire setup, showing breadboard, the power wires (curled black and red) coming from the PSU mounted on top of the bench's shelf, and the entire tread assembly w/motor.
53: AREV, which once served as the PSU until I modified an ATX style PSU.
44: Sensor with treads moving, looks fast huh?
46: Sensor w/LED over gap, notice dimmed light as compared to 47
47: Considerably brighter background light, this shows the "flickering" effect, or ticks that can in affect be counted.