The following instructable details the process of building a 4 axis positioning system (X,Y,Z+theta). While we leveraged this setup for an automata aquarium, it may be useful in your other projects as well. Anyway, our build targeted modified Hitec HS-55 servos (see this other shamelessly plugged instructable
), but servos of similar size should also be usable with similar steps. Note that if another type of servo is used for this project, the CAD models for the 3D printed parts may need to be changed as well. This was part of a project
for the spring 2012 Things That Think
class at CU Boulder.
1/4 in. basswood
4 sub-micro servos modified for continuous rotation and position feedback.