I started this instructable about half through building the zapper, sorry for lack of images and details i realize my instructions may be kinda confusing.
How bug zappers work:
This zapper does not have the power of a normal one but it does produce a few hundred volts which should be enough to kill most insects.
I haven't been able to test this outside yet because the bugs have come out yet but when I complete the circuit with a metal wire a loud snap and spark are produced.
Step 1: Overview/ Materials
- disposable camera w/ flash
- 3x 10mm blue leds (apparently mosquitoes are attracted to blue light)
- large cooking sifter
- small fish trap (available at walmart for about 1.99)
-spray can cap
Step 2: Creating the electric shock
Remove the wrapping from the camera and use a screwdriver to pry it open -be careful not the ruin the case
Remove the film and locate the capacitor which should be in the upper right corner.
Take two five inch long pieces of wire and solder one to each of the leads of the capacitor.
Drill two holes large enough to fit the wires through next to the view finder.
String the two wires through and close the case.
**There are a couple loose parts inside the camera make sure you put them back in the same place.**
Step 3: Screen assembly
Using wire cutters cut out the wire mesh from the cooking sifter.
Now roll the mesh into cylinder between 3/4 and 1 cm small than the diameter of the fish trap and staple the cylinder together. Cut the cylinder to the length of the fish trap leave a small tab at the end of the mesh for later..
Place the mesh cylinder inside of the fish trap and glue it in place to the perimeter of the plastic end of the trap. Make sure the two screens are not touching at any points.
Drill to holes in the cap of the fish trap and string a wire through them to form a U to hang zapper.
Step 4: Attaching camera to base
Cut a hole in the bottom of the cap the same size at the protrusion on the camera created by the lens.
** make sure the drilled holes and the lenses hole line up with the corresponding parts on the camera.**
String the wires through the two holes and hot glue the cap to the camera
Drill a screw through the cap and camera for extra support ** be sure not to drill though the flash circuit.**
Take the conical part of the fish trap which was cut off before and glue it to the inside of the cap.
Step 5: Attaching screens to camera base
Now attach the screens to the camera base. The outer screen should fit snuggly into the conical part of the fish trap which was cut off and glued to the cap earlier. Hot glue the screens in place.
Step 6: Light Assembly
Cut a piece of 1/2" pvc 6 1/4 " long.
Cut the tips of the leds off to diffuse the light.
I used 3 aa's to power the lights.
I arranged the leds in parallel. I used electrical tape to hold the wires in place and I glued to switch to the top of the cap.
Glue the light structure to the cap.