Working and programmable music box

This fully functional music box uses only original LEGO pieces to produce sounds and is therefore able to bring music to your ears! It works by adding tiles and slopes on top of a six-stud wide plate with gear racks. The plate, or better to be called card, can be inserted on the left side of the box and is pulled in using the crank on the front side. Now the music box is able the read the card: a hidden NXT with four touch sensors identifies the built-up increases on the card and thanks to simple stochastics, submits 15 different sounds via its loudspeaker. With this system, you can create any soundtrack you want and in my case I´ve made the very famous German wintersong "Alle Jahre wieder". Fitting to this song, the entire sound box is inspired by the winter theme and houses a little spinning christmas tree and an illuminated hut under an openable flap.

You can watch the music box in action by clicking the link below:

Thanks for watching!