I've always wanted to have a secret bookshelf door. Who wouldn't? So when I finished my attic, I had the chance to construct a custom bookshelf door that opens and closes by sliding into a space behind the wall, revealing my home office.
But I wanted to go farther than that - I wanted it to automatically activate itself via a secret book or using a special secret knock code. This instructable shows you how I did it. With some modification, you can use the same supplies to make a bookcase swing open and closed like a door.
Time: This project took me months.
Skill level: I'm an experienced woodworker, a novice Arduino programmer, experienced hardware hacker. Moderate to advanced skill level project.
4. Soldering iron
5. Wire cutters and strippers
6. Microswitch (momentary NO/NC)
7. Book you can cut into
8. Various bits of wire, electrical tape, heat shrink tubing, cable organizers
9. Altoids tin
10. Small wood screws
12. 2" fixed caster wheels (6)
13. 1 X 12 wood for bookcase
14. 3/4" bolt
The challenge was to build an entrance to the far end of the attic, which was triangular. A chimney created a central obstacle and would require the entrance to be on either the right or left. In the first photo, the chimney has been enclosed in sheetrock. With plans for a TV in the middle, both bookcases would be triangular in shape and wouldn't easily swing in or out. The bookcase needed to slide towards the center to reveal the door.
The second photo shows the opening created for the bookcase to slide into.