- Mount the buzzer by using two 6-32 screws and nuts.
- Drill a hole in the box where you will insert the on/off switch, as
shown in Figure 13-34. - Slip the threaded shaft of the on/off switch through the hole you
drilled and secure it with the nut provided.
If the wall of the box is too thick to allow the threads on the switch to
reach the nut, use a small chisel to remove enough wood from the inside
wall of the box so that the nut can engage the threads. - Solder the black wires from the three battery snaps to one lug of the
on/off switch and solder three 12" black wires to the other lug of the
on/off switch.
Figure 13-35 shows the switch after soldering. - Attach Velcro to the breadboard and the box and secure the bread-
board in the box. - Attach Velcro to the battery packs and the box and secure the battery
packs in the box. - Insert the wires from the sensors, motors, battery packs, buzzer, and
the on/off switch to the terminal blocks on the breadboard, as shown
in Figures 13-36 and 13-37.
Figure 13-35:
Wires
soldered
to on/off
switch.
Chapter 13: Sensitive Sam Walks the Line 337