So we have lots of creative work by members of Farnborough library, we have some stories and sound bites, and we have a small device to play these back. Now to put them all together and make the book!
We made 18 sound recordings in total, and I saved these recordings with the file name 001-018. These are stored in the mp3 trigger device. I then made 18 circuits and connected them to the pins 1-18. When closed, each circuit triggers the corresponding sound recording -i.e. recording #018 is triggered when the circuit connected to pin #18 is closed. I based all the switches on traditional pop-up techniques. Here are a few: