1. One Pumpkin
2. A surplus gearhead motor (one that spins 60-120 RPM on 12 volts)
3. A couple PVC pipe adaptors one: 1-1/2" threaded and another depending on the size of the gear drive motor.
4. One Red Laser Module.
5. A small 3VDC motor Jameco
6. small round mirror. Hobby Lobby carries these
7. 1ft piece of 1/4" brass tubing Hobby Lobby
8. Small brass stock 1/8" X by 1/32" Hobby Lobby
9. Two "Tiny Cylon" kits
10. Five high brightens 5mm green LED's available lots of places http://www.superbrightleds.com/
11. four or five LED Glow Tubes see this instructable
12. 24 or 26 gauge wire, red and black preferred or at lease two different colors
13. Solder iron, misc tools, electrical tape Hot Glue gun
14. Coping saw blade for carving the pumpkin
15. 2 D-Cell batteries and a holder for them
16. Flat black and silver spray paint
17. Black tempera paint for ocular cutout
18. a source of 12VDC for the gearhead motor and LED glow tubing
Here is the Final Borg O' Lantern assimilating the kids in my hood:
Step 1: The Ocular Implant
- Solder some wires long enough to connect the motor to your power source.
- Hot glue the motor into one of the PVC pipe fittings.
- Glue the first fitting into the second so that the whole assemble can be screwed into the pumpkin.
Step 2: Preparing the Blinking LED's
Often, when using a wire stripper on a short wire, the insulation pulls away from the part you are NOT trying to strip. I found a great way to strip short wires and prevent this, Use a single edge razor blade and carefully press down to cut through the insulation. Now spin the wire while holding pressure on the razor blade to make a clean full cut in the insulation. WIth practice, this is a fast method of stripping wires.
- Cut five red wires 3" to 4" long
- Cut five blue (or any color that is different form red) wires 3" to 4" long
- Strip about 1/4" of insulation off of each end and tin the wires.
- Solder a red wire to the positive lead of the LED's
- Solder a blue wire to the negative lead of the LED's
Step 3: Wiring and attaching the LED's
- Mount the middle LED form the Tiny Cylon board at the top of the motor. This lets you glue the rest and make them all even.
- Mount the other Tiny Cylon board on the the motor base so that the LED's are in a line horizontally.
- Finally, connect wires to the boards for power with one set running out the back of the implant. I drilled a hole in the PVC to pass them through to the inside of the pumkin.
Step 4: Ocular Implant construction
Step 5: Build the Laser Vortex Scanner
- Cut a 4" piece of the 1/4" tubing from the brass tubing.
- Take the remaining 8" piece and split the end about 3/8" by cutting it. I used an Exacto saw blade with 42 teeth per inch.
- Using needle nose pliers and a little ingenuity, form the end so that the 4" piece can fit into it and be soldered to it. See Pics.
-Solder the two pieces of brass tubing together. I used a 100W iron my wife has for jewelry making.
- Using the small brass stock form it around the motor to make a bracket and solder it to the motor.
- Using a similar technique make a holder for the laser housing.
- Solder both to the ends of the 4" brass tube so that the laser points at the mirror. At least get close enough that it can be bent to reach the right position.
Finally wire the leads to a set of common wires. This will all run on 3VDC from the DC batteries
Step 6: Carving the Pumkin
I made a saw to carve the pumpkin with by cutting a coping saw blade at an angle with tin snips then taping the end with electrical tape to make a handle
- Cut around the top angles inward slightly so you can pop the top off and put it back on as a lid.
- Cut out the insignia with enough margin to tape it to the pumpkin.
- Tape it to the pumpkin.
- Cut out the black parts using the coping saw blade.
- Mark eyes on either side and cut out the left one normally.
- For the Ocular Implant hole, cut it just under sized so that the PVC pipe threads can be screwed in. Cut it so that the sides are straight out, allowing the Ocular Implant will point forward.
- Finally, cut out a back panel to pass wires through.
Step 7: Final Assembly
- Mount the Ocular Implant by screwing it into the right eye socket.
- Using a 1/4 drill, make holes in the pumpkin where you want the LED glow tubing to go. Push the ends of the tubing into the 1/4" holes.
- Mount the Laser Scanner by pressing the brass tubing into the pumpkin to hold it in place.
I wasn't satisfied with the original outcome so I carved around the Ocular Implant and filled it in with black tempera paint.
For interior light I had a couple RGB led things from some toys lying around (I'm that guy, still taking things apart and saving the electronics.) You can use any light source you like but not a real candle!
Step 8: Go Live!
Feel free to modify the design and be creative!