If anybody wants to replicate this and make a similar cache themselves, instructions, schematics, and a link to the source code can be found at:
https://danq.me/2014/08/13/gc591vv/
Dan Q posted a note for GC591VV You Can’t Do It Alone!
This checkin to GC591VV You Can't Do It Alone! reflects a geocaching.com log entry. See more of Dan's cache logs.