Roomba Diffusion Lens

**WARNING!** This will void your Roomba warranty, *and turn it into a kamikaze death machine*. **Don't use this** if you have cliffs (stairs, ledges, actual cliffs) where it cleans. Your Roomba might also go places it couldn't go before, and will be a new source of wear and tear for whatever it bumps into.

Created to defeat overzealous cliff sensors, which caused my Roomba to shut off any time it brushed up against a rug. This is a common problem with cleaning robots and dark or thick rugs.

A low budget solution is to break off the ridged edge of a transparent CD/DVD jewel case and tape pieces of it over the sensors, letting the IR emitter's light reflect back -- but not a lot of people have jewel cases around anymore. I dug deep in the garage and found one to sacrifice, and it worked.

I wanted to see if I could print something to do the same, and these seem to work.

**To use**: Print enough to cover each sensor; mine has four, fancier models have six, check your model. Pri