While I was sitting around rewiring, touching up, and adding arduino control to my pack, my daughter told me she wanted to be my "Ghostbuster Assistant." I kind of hemmed and hawed and told her I didn't think I had the time or money to build one this year, but the idea simmered in the back of my brain for a while and later on that week I realized that not only did I have enough time to do it, but I had almost everything I needed already on hand!
Total cost for this project: $15.88 (under $20!)
Most of the materials were scraps of cardboard and plywood, various doodads and gizmos I had in my shop, and lots of stuff rescued from the recycling bin. The electronics, tape, and hot glue I already had. All I had to buy was one tube of E-6000 epoxy (4.99) and three cans of super cheap flat black spray paint (.97/each). Also, I had to pick up an old backpack from value village (2.99) for the the straps. Oh, and a khaki jacket from goodwill (4.99).
Here's a brief description of the controls:
***UPDATE 5/4/10: If you make your own ghostbusters costume, go ahead and post some pictures in the comments below. I'll send you a patch!***
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Signing UpStep 1: Gather materials
I used mainly cardboard, tape, hot glue, and epoxy to make the packs. Here is a (probably incomplete) list of the materials you should have lying around to make a kid sized (or a full sized) proton pack:
1/4" plywood
Lots of cardboard - big boxes and a variety of smaller boxes is helpful
Duct, masking, and electrical tape
2" thick styrofoam (I used this because I had it, but cardboard would work too)
Flat black spray paint (Home Depot sells cheap cans for .97/each)
Hot glue
Epoxy (I like E-6000)
Strong magnets
Wires
Split plastic conduit material
Plexiglass
Probably about 10-15 feet of light gauge speaker wire
LED's, perfboard, a 555 timer, switches, buttons, capacitors, resistors, flashy kids toys from the dollar store
1/2" and 3/4" PVC (about 8 feet of each)
Eye screws
An IDE cable from an old computer
Some colored wire
Miscellaneous bottle caps, screws, bolts, zerks, tubes, pill bottles, and any other sorts of things that might look nice once they've been spray painted

















































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Thanks
Total time for this pack was, oh, around 30 hours? I don't know, I wasn't rushing or timing myself. I did it almost entirely in the evenings after work for two or three weeks. One of the nice things about doing a lot of these at once would be that you'd be able to hammer out a large number of each part all at once, getting faster and better after each one.
If you need any more help or advice just ask!
Neat
We should start a group called "Parents that spend too much time on their kid's Halloween costumes." Then again, we're already all here on instructables, so it would just be redundant. Nice costume, your kid is cool.
Most people would avoid pointing out things like that, but that stuff is great to see. It's nice to laugh at ourselves, and I really enjoy it when people include their own clever self-commentary in their instructables.
I wish more people would do it!