Enter the Smart Toilet Paper Roll. The device consists of a 3D printed toilet roll holder, outfitted with sensors to track usage of the precious material. A magnetic rotary encoder is used to ...

Hair, grime, germs and mold get nice and cozy in the brush and holder, so roll up ... same about your toilet brush and holder? These oft-neglected, crucial cleaning tools get pretty gross.

And to that end, we present his IoT toilet sheet tracker. His 3D printed roll holder has a Hall effect sensor that counts revolutions of the roll and sends it to a NodeMCU. The number of sheets ...