Already I have a project - an artist from Ovada has just this minute described to me the following project:
She has 7 MP3 players that are going to play separate tracks on 7 separate speakers, so they are all wired up independently.
She would like to have them them each triggered by 7 proximity sensors, so that anyone visiting would hear a cacophony evolve, maybe I guess from 3-5 feet away.
Question 1: are there any cheap proximity sensor triggered MP3 players available?
If not I guess the best set up would be to have each of MP3 player running on loops and the speakers running through a switch controlled by a proximity sensor. I explained that this would be better than starting up the MP3 player if the starting point of the track wasn’t important.
Question 2: what components are required and in what configuration to make an adjustable proximity switch to power a speaker?
Anyone who has been in a gallery would appreciate having an audio based artwork which switches off when people aren’t around!