Hello, I was hoping by joining this site that I could get the chance to talk to a couple of much smarter more experienced individuals. Currently I am trying to figure out a way to track a spool of material as it unwinds, I’d have it display a warning when it gets low , and stop further processes when empty. This would be easy if the spool would be a consistent size, but that’s where I’m having issues. I was initially thinking of using a laser sensor but I’m not sure that would work since of the differences in size. If you have any tips or ideas I’d love to hear them thank you!