Recorded at OGGCamp12, a geek hacking event, this is the sound of an RFID card code (Oyster type) being replayed on 3 solenoids controlled by an Arduino microcontroller. There are 3 different sounding boxes, a biscuit tin, a lasercut wooden box and the table. In the background are the audience. I used this to create a mix to accompany the video I took at the event.