Electronic bamboo flute

Two boards were spliced ​​together to extend the flute's length, meeting JLCPCB's free prototyping requirements. The 28.5*100mm
simulated flute features six holes,
with software simulating the fundamental tone (sol) of a traditional bamboo flute.
Traditional bamboo flutes use airflow to control high and low notes; the electronic bamboo flute adds a bass key, and the treble key simulates
[Electronic Bamboo Flute - STC & JLCPCB EDA Microcontroller Creative Design Competition] https://www.bilibili.com/video/BV1kH4y1c7bU/?share_source=copy_web&vd_source=81dfd7a521683e9023c49375a11dd54b
 
Source code: https://github.com/houyawei-NO1/electronic-bamboo-flute
 
Note: Traditional bamboo flutes use airflow to control bass; the electronic bamboo flute uses the fundamental tone (sol) of the traditional bamboo flute on top of the six holes. With the addition of treble and bass keys, the standard six-hole operation is located on the front of the flute, with both thumbs supporting it. Now, each thumb needs to control one treble or bass key. By default, pressing only the six-hole produces a middle note; pressing it with the treble key produces a high note; pressing it with the bass key produces a low note; pressing both keys together produces a super high note. There is also a power indicator for the power chip; and a USB cable allows for direct ISP programming.
Initially, I wanted to use a plastic tube, but it was difficult to fit, so I designed an outer casing instead.