Assembling The Zapper
1. You will be using the lid of the shoe box to mount the components. Save the box to enclose the finished project.
2. pierce two holes near the ends of the lid. Enlarge the holes with a pen or pencil until the bolts would fit through. Mount the bolts on the outside about half way through the holes so there is a washer and nut holding it in place on both sides. Tighten.
Label one hole “grounding bolt” on the inside and outside.
3. Mount the 555 chip in the wire wrap socket. Find the “top end” of the chip by searching the outside surface carefully for a cookie-shaped bite or hole taken out of it. Align the chip with the socket and very gently squeeze the pins of the chip into the socket until they click in place.
4. Make 8 pinholes to fit the wire wrap socket. Enlarge them slightly with a sharp pencil. Mount it on the outside. Write in the numbers of the pins (connections) on both the outside and inside, starting with number one to the left of the “cookie bite” as seen from outside. After number 4, cross over to number 5 and continue. Number 8 will be across from number 1.
5. Pierce two holes V inch apart very near to pins 5, 6, 7, and 8. They should be less than 1/8 inch away. (Or, one end of each component can share a hole with the 555 chip.) Mount the.01 uF ca-
pacitor near pin 5 on the outside. on the inside connect pin 5 to one end of this capacitor by simply twisting them together.
Loop the capacitor wire around the
pin first; then twist with the long-nose pliers until you have made a tight connection. Bend the other wire from the capacitor flat against the inside of the shoe box lid. Label it.01 on the outside and inside. Mount the .0047 uF capacitor near pin 6. On the inside twist the capacitor wire around the pin. Flatten the wire from the other end and label it.0047. Mount the 3.9 KW resistor near pin 7, connecting it on the inside to the pin. Flatten the wire on the other end and label it 3.9. Mount the 1 KW resistor and connect it similarly to pin 8 and label it 1K.
6. Pierce two holes ‘/inch apart next to pin 3 (again, you can share the hole for pin 3 if you wish), in the direction of the bolt. Mount the other 1 KW resistor and label inside and outside. Twist the connections together and flatten the remaining wire. This resistor protects the circuit if you should accidentally short the terminals. Mount the 3.9KW resistor downward. one end can go in the same hole as the 1K resistor near pin 3. Twist that end around pin 3 which already has the IK resistor attached to it. Flatten the far end. Label.
7. Next to the 3.9KW resistor pierce two holes Л inch apart for the LED. No-
tice that the LED has a positive and negative connection. The longer wire is the anode (positive). Mount the LED on the outside and bend back the wires, labeling them + and — on the inside.
8. Near the top pierce a hole for the toggle switch. Enlarge it until the shaft fits through from the inside.
Remove nut and washer from switch before
mounting. You may need to trim away some paper with a serrated knife before replacing washer and nut on the outside. Tighten.
9. Next to the switch pierce two holes for the wires from the battery holder and poke them through. Attach the battery and tape it to the outside.