Pick Up the Book Detection

A project log for Notable Board Books

How alert and happy my mother (with Alzheimer's) became when she heard familiar songs! Lift the book, turn the page--the book does the rest.

Annelle RigsbyAnnelle Rigsby 07/27/2018 at 13:420 Comments

Four roller ball switches and a 3d printed housing (file available here) can be used to "know" that the book has been picked up.

The housing provides a slight downward tilt so that the roller ball switches are all reset when the book is resting on a flat surface. The short wire (brass color) should face outward--when the switch is tilted toward the brass wire end, electrical connection is made.

I use wire wrap wire to connect switches together. The four switches are wired in parallel.