Power Lock On

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 07/31/2018 at 13:030 Comments

Although the tilt switches can be used to indicate that the book has been picked up or set down, intermediate "holding the book flat" can result in power loss. By placing a relay contact parallel with the tilt contacts, the Arduino can hold power on for a couple of minutes (or until finished playing a song).