Once you have downloaded the 4 MyBlocks, you can download this program, and use as normal. The program starts, then you can select a song with the buttons. Then it will play a song and blink the different sensors.
Yep! This project will allow you to see Santa Claus, or the adults that put the presents under the tree! You can use 2 NXTs to receive a Bluetooth message, or you can use the no Bluetooth program for a single NXT. Either way, it will signal you with text or beeping!