Beginner’s Robotics on $50 a Month
make the finished assembly.
Now, press the wheels
and tires onto the axles
extending from the gearbox.
The base will now look like
On the top of the plate,
two long angle pieces need to
be added. These angle pieces
will hold standoffs, which will
be added to the robot next
month. Place one over the
very front row of holes as
shown in Figure 13. Use two plastic
rivets to attach it to the plate. The
second angle piece will be attached in
the same manner at the other end of
the plate. However, it will need to have
part of its structure trimmed as shown
in Figure 14.
Now, the second plate will be
attached to the first plate. Make four
stacks of double-stick foam tape as
shown in Figure 15. Each stack should
be three pieces deep. Two of the stacks
are behind the motor mount and will
need to be trimmed slightly to fit.
Attach the second plate to the top of
the stacks. Twist the two battery box
wires together and route them through
the holes in the base plates immediately in front of the motor mounts so that
the completed base looks like Figure 16.
The final piece for the base is the
solderless breadboard. This comes with
double-stick tape on its backside.
Position the breadboard before
removing the protective paper from
the tape. Note the numbered rows and
lettered columns on the breadboard.
The board should be placed with the
edge near row one, flush with the
edge of the angle support on the front
of the base and the edge nearest
column J, flush with the side of the
base as shown in Figure 17.
FIGURE 13. Front Support.
The instructions for completing the
rest of the CIRC Bot can be found at
They will also tell you how to program
the robot and troubleshoot it if everything does not go perfect the first time.
FIGURE 15. Tape
Stacks on Lower
When you finish the work described
in this month’s article and the online
supplement, you can honestly say that
you built a robot. Next month, we will
greatly enhance your robot’s sensor suite
and we will add an LCD display so your
bot can tell you what it is thinking. Until
then, have fun with your project! SV
FIGURE 16. Base With
Second Plate Added and
Battery Wire Routed.
FIGURE 17. Finished
Base Ready for
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