He developed a robot laser that pinpointed the exact location of the poop, making it easier to find. But getting rid of the waste still required labor, something he was keen to do away with.

he automated the task of locating the packages with a poop-pointing robot laser. Removal of the poop remained a manual task, one which [Caleb] was keen to outsource, hence the current work.

And then we jump into a parade of excellent hacks with a magnetic bearing for crooked ball screws, a science-based poop-burning experiment, and the music hack only microcontroller enthusiasts ...