This easy to solder kit is based around an UM66T19 melody generator which will play Beethoven’s Für Elise on a small piezo buzzer.
Once assembled you’ve created your own music box that will play the song when pressing (or releasing) the microswitch.
To complete the set Francois Janssens created a lasercut design to fit the PCB in either an upright piano or a grand piano.
These are designed to be cut out of 3mm MDF and are available in the design folder.
- pay attention to the orientation of the battery holder
- In case of the CR2032 battery holder, solder this first
- Next up is the component with the least height. In this case the buzzer.
- carefully bend the pins of the melody chip (3 pins TO-92 package) to fit the wider footprint. (This is not required, but will make soldering the chip a lot easier)
- Solder the switch on the prefered location. Soldering the switch on the NC location will make the kit work as a music box and play music when the button is not pressed. This is the location for the grand piano kit.
First prototype to verify the mechanical design.
Updated design to allow for dual AAA battery.