Music Box

Less than a year after my comment that it would be nice to make a music box with a ballerina in the publication "The Light-Music Gift of the Beloved" .



I apologize in advance for the quality of photos and videos.

I took the electronic part and the firmware from the topic “A light-music gift of my beloved by my own hands”. Music left the "Tenderness" from the k. F. "Three poplars on Plyushchikha", she bribed me with her tenderness, yes, and I confess, I did not find anything suitable.
')
The button for switching on the engine and the sound module is common and only for closure, due to which it was necessary to modify the circuit a little:

1. In order not to change the firmware, I put a resistor and a capacitor on the output of the MC for starting the melody, simulating pressing and releasing the button.
2. The engine and sound module are powered from different sources with a common minus, which is interrupted by a button, so I added a pair of diodes to each load.



Mechanics have kindly helped me to develop and cut out my workmates on the laser.
The only difficulty was to install the engine in the center so that the gears did not bite.



Here are all the glued parts, except for the gear:


Bottom view assembly.


The ballerina herself is printed on a 3D printer.