“Welcome to another instructable. In this instructable I will discuss how to make a crude spectrophotometer. I will show you what sensors work best, and how to use Python for dynamically updating and displaying the data.
Overall I will be evaluating how effective or useful this will be to hobbyists, who want to learn more about it. I personally had no idea how one worked so I thought I’d research the idea. At the time I was particularly interested in finding out how much chlorine was in my drinking water (my tap water has a chlorine smell/taste when I use it to make coffee). I will discuss this a little more detail in the next step, and show you what I discovered during my research.”