Parts, code, docs and photos of the Ghostbusters Proton Packs we’re building for Halloween 2022.
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Jason J. Gullickson 1825f0c713 Just starting to get things down. 1 month ago
LICENSE Initial commit 1 month ago
README.md Just starting to get things down. 1 month ago

README.md

proton-pack

Parts, code, docs and photos of the Ghostbusters Proton Packs we’re building for Halloween 2022.

Models

Most of the printed parts came from existing sets. In addition to the parts linked below, a number of custom parts were designed as well and will be added to this repository.

We used parts from the first link to make the packs and from the second and third to make the wands. In addition to the parts, this image gallery proved essential to understanding how the parts actually fit together.

Other Mechanical Parts

The "motherboard"s were cut from 1/4" plywood and the backpack frame assembled from 1/2" PVC. Military surplus ALICE pack frames are prefered but have become expensive enough that we decided to try something else. The PVC fram coupled with off-the-shelf straps cost at least three time less than any ALICE frames we could find and weigh less too.

Additional mechanical parts were added for flavor and will be cataloged below.

Finish

TODO: Get details from Jamie

Electronics

The brains of the operation is an Arduino Uno mounted in the pack. This directly drives ten 10mm LEDs and triggers a sound effects board via GPIO. The sound board includes a 3 watt class-d amplifier and drives an "exciter" which turns the entire motherboard into a speaker (you can feel it when the pack powers-up).

The pack is controlled by the wand which contains two toggle switches: one that latches for power and another momentary to trigger the beam. The wand also contains two LED's, one "pilot" that illuminates when the power is switched on and a second which provides the "beam" when the trigger is pulled. Finally the wand also contains the 6VDC power supply in the form of 4 AA batteries.

The wand is connected to the pack via a 4-conductor tether which carries power, ground, fire and beam signals between the two units. The tether is connected at both ends using aviation-style locking sockets and plugs.

Firmware

When power is applied to the Arduino,