Wrote the firmware

I wrote the firmware for the instrument in the C++ language. this was a bit difficult as it was my first time using C++ but with a lot of googling and youtube watching I made it happen.
The partial ranges for the octave buttons are as follows:

F#3 - C4 is No Buttons Pressed
C#4-G4 is SW4
G#4-C5 is SW5
C#5-E5 is SW6
F5-G5 is SW7
and finally
G#5-C6 is SW8 giving us a massive range to play.

The fingerings for each note within an octave are the same as a trumpet so IG you could look that up.!

Created the case!

I created the case, i was originally going to go with a case similar to my previous projects, but due to the fact that it would be hard to access the buttons, i decided to go with a carrying case instead. This was a bit more difficult since A. I switched to onshape so I had to relearn onshape, and B. I had to learn how to make a hinge in onshape. I settled with a 4 file 3d print where one was the bottom part, another was the lid, 3rd would be a rod with one side end cap, and the last would be a end cap for the other side.

Created and routed the PCB

Created and routed the PCB

I imported the schematic into the PCB and routed it, it was difficult to tell exactly what components did what, especially with capacitors and resistors that all look the same but I managed thanks to those lifesaving blue lines!
I tried to make it look nice and position the buttons so that its ergonomic when being played :).

Finished the schematic

I finished the schematic and used a ESP 32E WROOM N4 it features 9 buttons, 3 valves with fingerings that match that of the trumpet, and 5 octave keys that choose what octave you play in and finally the button that makes it start playing and stop playing. This was really difficult because it was my first time working with a large project and a large amount of resistors and capacitors but google and youtube saved me on this one