There are a total of 7 strings. When the string is cut, the buzzer sends out the corresponding sound level.
When the string is cut, the LED of the string is lit up. There are a total of 7 LED.
Play two pieces of music stored by buttons.
Switch middle and high bass.
1 x DIY Single Chip Microcomputer Laser Harp Kit
DIY Single Chip Microcomputer Laser Harp Kit Electronic Piano Music Box
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