I'm making a escape game and wish to create a shelf (or similar) such that the raspberry pi will execute some code only if the certain books are put on the shelf in the correct order.
How may I go about doing this (as cheaply as possible I might add!)?
NOTE: I am a noob when it comes to hardware, although experienced in programming, so please be as detailed as you can in terms of what I need.
Thanks for any ideas.
I had a few partial ideas.
From the research I've done so far the best way I can see doing this is to detect which book is being used through have 3 NFC readers or some sort of weight sensor to detect which book is on (assuming each book has a different weight)