The plastic toy he started with was screwed ... He started the electronic portion of the build by tracing out the keyboard matrix to figure out which solder pads he could tap into.

Building a MIDI device is always a great microcontroller project, and nearly everyone has an old toy keyboard lying around in the back of a closet or in the basement. [JenShen] decided to take one ...

However, the lack of integrated sounds makes those clearly not electric pianos, making Studiologic's offering a little thin. If you've ever had a cheap toy keyboard with even cheaper sounds ...