Protecting paper code wheel

Thread Starter


Joined Jun 4, 2014
I have made a quadrature encoder using IR reflective sensors by printing a strip on a laser printer (Generate encoder strip) and wrapping it around a cylinder. I would like to protect the paper surface and keep it clean while not upsetting the IR reflectivity.

What would be the best method of protection - cling film, stickyback plastic, or some kind of varnish?


Joined Jan 31, 2022
I have used spray-on circuit board lacquer for similar tasks, always have a can of it just in case, is useful stuff. Not super shiny, probably won't affect operation of your encoder.