As you can see, from navel to foot is 1.6 times the distance from navel to head. There are an enormous amount of other examples found in nature and architecture, but I will leave that for Wikipedia. I decided to apply this ratio to my spider in two ways. First, I decided to make the tibia 1.6 times the length of the femur, as shown.
Second, I decided to make the circuit board 1.6 times longer than it is wide. To tie it together I made the width of the board the same length as the tibia. Here are some renders of before and afters. I am in the process of printing the new parts.
For me, incorporating the golden ratio into the design makes it pop. I am interested in how others feel, as well as in whether the golden ratio has influenced robotics design before.