Motor mux - rotary

This is a way to get more outputs from a limited number of motors. Rotary version - hand crank moves selector gear in a circle. Input meshes with selector, which meshes with any of the 6 output gears. Rotary version is difficult to automate (i.e. make a robot). Selector must be positioned precisely and movement of the output gears as the selector travels by must be compensated for.