Very few components, plexiglass and a CNC are the ingredients to make wonderful brilliant figures to decorate the Christmas tree or our house this Christmas and New Year. Let’s see how to do it.
With the LED is possible to do things that with the traditional sources of artificial light was not allowed, like signs and figures obtained by projecting in …

This embedded MP3 module is an universal and compact circuit (37 mm x 27 mm) for playing MP3 audio files. The MP3 module can be used in embedded systems.
The MP3 files (up 65,536) are stored in a micro SDcard.
Controlling the module could be done either by buttons and digital inputs or via TTL serial interfaces.

The MP3 module (developed by Luca …