I sell fresh eggs from a small refrigerator and would like to be able to make a circuit that can count how many dozens of eggs are in the refrigerator and am looking for ideas.
The included image is an approximation of how the egg cartons look inside the fridge. Ideally, cartons will stay in that orientation and for simplicity of the design that can be assumed, but if anyone has ideas of an approach that would handle random configurations as well that would be welcome also.
Some thoughts I’ve had so far are,
- sonic range sensors mounted on top to measure distance to top of each column
- infrared image processing (where IR-reflective markers are placed on the inside of the refrigerator.
- weighing the refrigerator.
Any input much appreciated.