Page 300 - Amphibionics : Build Your Own Biologically Inspired Robot

Amphibionics 07 3/24/03 9:13 AM Page 279
Chapter 7 / Turtletron: Build Your Own Robotic Turtle
and then drill the holes with a 5/32-inch drill bit. Attach an A3
gearbox horn to each of the gearboxes with the washers and
securing nuts that came with the kits. Use two #4-40 3/4-inch
machine screws and nuts to attach each wheel to each gearbox
horn as, shown in Figure 7.6.
Constructing the base. The robot’s body will be constructed
using two common Frisbees that can be obtained at most depart-
ment stores. Starting with the base, use the dimensions shown in
Figure 7.7 to cut two recesses in the plastic disk, using a hack
saw. The gearboxes will be mounted so that the wheels are posi-
tioned in the recessed areas. Use a file to smooth any rough edges
where the plastic was cut.

FIGURE 7.7
Cutting dimension for
wheel recesses in the
robot base.

279