China DIY Music Electronic Christmas Tree Kit

DIY Electronic Christmas Tree Kit
Size: 60*60*136mm
This kit is a DIY kit. User needs to solder themselvers.
Circuit description:
This Christmas tree kit is composed of three circuit boards(A boardB boardC board). The user assembles them by soldering, allowing 36 LEDS to flash alternately. This presents a three-dimensional outline of the Christmas tree in space(better viewing at night).
Performance parameters:
Input voltage: DC 4.5-5V

List of originals:

Note:
The music version adds more components(1 buzzer, 1 transistor, 1 music transistor, 2P pins+1 jump cap)
Transistor and music IC are the same, pay attention to distinguish when soldering, in order to avoid soldering wrong.