Roomba Diffusion Lens

thingiverse

WARNING! This modification will invalidate your Roomba warranty, turning it into a kamikaze death machine that may cause catastrophic damage. Do not attempt this if you have cliffs (stairs, ledges, actual cliffs) where it cleans, as the robot might venture into places it couldn't go before and incur additional wear and tear on whatever it bumps into. This hack was created to bypass overzealous cliff sensors, which frequently caused my Roomba to shut off whenever it encountered a rug. This issue is common among cleaning robots and dark or thick rugs. As an alternative to breaking off the ridged edge of a transparent CD/DVD jewel case and taping pieces over the sensors, I found a low-budget solution by printing something to achieve the same effect. These prints seem to work just as well. To use: Print enough parts to cover each sensor; my model has four, but fancier models may have six or more. Prepare a few extras so you can pick out the best ones. Attach a lens over each sensor, with the ridged side facing up (towards the sensor). I used painter's tape. Print the design using a clear filament that mimics glass-like refractive index, such as Taulman t-glase. Enjoy your new kamikaze death machine, and don't say I didn't warn you! This thing was made with Tinkercad. Edit it online at https://www.tinkercad.com/things/0kuxk2cXVGPp