I am looking for any solution which can help me out to count the number of droplets or amount of water on a mirror or glass.
I am going to spray mist on two glass or two separate mirrors. and I am looking for solution so I can compare the amount of water deposited on each glass/mirror OR I can count the number of water droplets on each mirror/glass and can display it.
Can I use any light sensor for this. if yes How?