- Solder an 8" wire to the center potentiometer lug and another 8" wire
to the left potentiometer lug, as shown in Figure 12-11. - Solder a red 8" wire to the long lead of the LED and a black 8" wire to
the short lead of the LED, as shown in Figure 12-11. - Slip a 1" piece of heat shrink tubing over each solder joint and use a
hair dryer to secure them in place. - Solder an 8" wire to the lug on each of the phono jacks, as shown in
Figure 12-11.
See Chapter 2 for advice about safe soldering if you’re not very experienced
in this art.Putting it all together .........................................................................
After you have a box and a circuit, it’s time to introduce them to each other.
Follow these steps to do so:- Attach Velcro to the breadboard and the box and secure the bread-
board in the box. - Attach Velcro to the battery pack and the box and secure the battery
pack in the box.
Figure 12-11:
Wires
soldered to
the on/off
switch,
potentio-
meter,
phone jacks,
and LED.
Chapter 12: A Handy-Dandy Metal Detector 293