This has been a simple project for LTB here in Coventry.
What needed to happen was: Every time motion is being detected (human) an MP3 track had to be played (old elevator sound effects). This is accomplished with an MP3 shield, Arduino Uno and a PIR sensor. I have designed a lovely black enclosure for this but the management of the exhibition liked it better without it.
You can listen to the full audio here:
[ Ссылка ]
