laser harp-wyc

I made it when I was bored in my sophomore year. The original idea was made by a senior in the HPU electrical development department. At that time, it was welded with perforated boards. It used a lot of Dupont wires and it was not beautiful enough, so I drew a PCB to manage the wires. The project The picture is the first version I made, which is relatively small. The open source 3D model and PCB here are from the second version. The shape of the second version can be seen: https://www.bilibili.com/video/BV1Vv411b72R/?spm_id_from= 333.999.0.0&vd_source=1ec100b5cb37051a4713e1f14f3480bb.
 
 
The laser harp is a harp without strings. Instead, it has a bright beam of light. The user only needs to pluck the beam, which is like plucking the strings, and can still play a melody.
 
The laser harp is mainly composed of the main control STC15 chip, laser module, photoresistor module and buzzer.
 
Features of the laser harp:
1. There are 7 strings in total. When the strings are plucked, the buzzer emits the corresponding tone level
2. The user can change the pitch by plucking the 6th and 7th strings, and adjust the treble, midrange, Bass mode.
3. Five songs have been built into the chip. If you pluck the strings with three fingers at the same time, the corresponding built-in songs will be played automatically.
 
As long as the user has a certain musical foundation, a complete song can be played. Come and explore its features!