Hello! On their recent Tour, Coldplay gave wristbands to the audience that had LEDs in them and a radio receiver. They were switched on for certain songs (http://www.youtube.com/watch?v=w07jGlgESTs). I was wondering if there was a way to reactivate them. There's a ISM Receiver Si4313 (http://www.silabs.com/products/wireless/EZRadio/Pages/Si4311-12-13.aspx) and a µC Si C8051 F980-GSM (http://www.silabs.com/products/mcu/lowpower/Pages/C8051F98x.aspx) on the board (http://ostermann-net.de/misc/xyloband1.jpg). There are Rx, Tx, C2D and C2K Pins available. There is no way to sniff the activating signal unless u are at the concert (or outside the venue). Do you think there is any way to find out how to activate them? I guess the protocol shouldn't be too complex. Maybe somehow read out the µC? Thanks in advance for helping!